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The ultimate benchmark in the world of motorsport, SADEV designs and manufactures high-technology sequential gearboxes and transmissions. Optimiz Access is your premier distributor for the SADEV range dedicated to Renault Sport rally and circuit vehicles (Clio Cup, R3, Twingo R2, Megane N4).

SADEV: Competition Transmission Excellence at Optimiz Access

For decades, the name SADEV has resonated in paddocks and service parks as synonymous with performance, reliability, and cutting-edge engineering. As the specialist in motorsport transmissions, SADEV equips champions across all disciplines, from rally to circuit racing and rallycross.

Choosing a SADEV transmission means opting for proven technical solutions: dog-ring sequential gearboxes, high-performance limited-slip differentials, and impeccable machining quality, ensuring ultra-fast gear shifts and maximum endurance under stress.

Your SADEV Partner for the Renault Sport Range

At Optimiz Access, we share this demand for performance. Our expertise allows us to support you in the maintenance, servicing, and evolution of your SADEV transmissions. We distribute the complete range of spare parts and complete gearboxes specifically developed for Renault competition vehicles.

Find on this page all SADEV references adapted to the following models:

  • Renault Clio 2 X65 Cup and Clio Gr N
  • Renault Clio 3 X85 Cup
  • Renault Clio R3 (Access, Max)
  • Renault Twingo R2
  • Renault Megane N4

Whether you are looking for a revision kit, replacement gears, output flanges, or a complete sequential gearbox, our catalog ensures you find the original SADEV part needed to keep your vehicle at the peak of its performance.

There are 118 products.

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Couronne  56 dents - Ph2 Clio Gr N
      Do not let an approximate transmission compromise your stage times. This 56-tooth crown wheel for 11-tooth shafts is an official Renault Sport component, engineered by SADEV specifically for the Renault Clio 2 Group N equipped with the ST66 gearbox . As the exclusive distributor of SADEV parts for the Renault...
      €820.75Price
      Couronne  56 dents - Ph2 Clio Gr N
          Do not let an approximate transmission compromise your stage times. This 56-tooth crown wheel for 11-tooth shafts is an official Renault Sport component, engineered by SADEV specifically for the Renault Clio 2 Group N equipped with the ST66 gearbox . As the exclusive distributor of SADEV parts for the Renault...
          €820.75Price
          SADEV 58-Tooth Crownwheel (12-Shaft) F1908059 - ST75 Sequential GearboxSADEV 58-Tooth Crownwheel (12-Shaft) F1908059 - ST75 Sequential Gearbox
              The SADEV 58-Tooth Crownwheel (reference F1908059 ) is the main receiver for the 12/58 final drive ratio in your SADEV ST75 sequential gearbox . This part is essential for ensuring reliable gearing and must be replaced as a pair with the associated 12-tooth shaft. It is intended for the Renault Clio 3...
              €1,031.42Price
              SADEV 58-Tooth Crownwheel (12-Shaft) F1908059 - ST75 Sequential GearboxSADEV 58-Tooth Crownwheel (12-Shaft) F1908059 - ST75 Sequential Gearbox
                  The SADEV 58-Tooth Crownwheel (reference F1908059 ) is the main receiver for the 12/58 final drive ratio in your SADEV ST75 sequential gearbox . This part is essential for ensuring reliable gearing and must be replaced as a pair with the associated 12-tooth shaft. It is intended for the Renault Clio 3...
                  €1,031.42Price
                  SADEV 58-Tooth Crownwheel (15/58) - ST75 Sequential Gearbox - Renault Clio 3 CupSADEV 58-Tooth Crownwheel (15/58) - ST75 Sequential Gearbox - Renault Clio 3 Cup
                      The SADEV 58-Tooth Crownwheel is a vital component of the 15/58 final drive ratio in your ST75 sequential gearbox . Essential for the proper function of your Renault Clio 3 X85 Cup's transmission, this original quality part is specifically designed for this model. Referenced under F19080561 and...
                      €1,031.42Price
                      SADEV 58-Tooth Crownwheel (15/58) - ST75 Sequential Gearbox - Renault Clio 3 CupSADEV 58-Tooth Crownwheel (15/58) - ST75 Sequential Gearbox - Renault Clio 3 Cup
                          The SADEV 58-Tooth Crownwheel is a vital component of the 15/58 final drive ratio in your ST75 sequential gearbox . Essential for the proper function of your Renault Clio 3 X85 Cup's transmission, this original quality part is specifically designed for this model. Referenced under F19080561 and...
                          €1,031.42Price
                          Couronne 58 dents ( 12 / 58 ) équipée Clio Gr NSADEV 58x12 Crown Wheel - Renault Sport Clio 2 Gr.N ST66
                              Do not risk a mechanical failure and retirement during your next stage. This 56-tooth crown wheel for 12-tooth shafts is an official Renault Sport competition part, engineered by the experts at SADEV for the Renault Clio 2 Group N equipped with the ST66 gearbox . As the exclusive distributor ...
                              €758.77Price
                              Couronne 58 dents ( 12 / 58 ) équipée Clio Gr NSADEV 58x12 Crown Wheel - Renault Sport Clio 2 Gr.N ST66
                                  Do not risk a mechanical failure and retirement during your next stage. This 56-tooth crown wheel for 12-tooth shafts is an official Renault Sport competition part, engineered by the experts at SADEV for the Renault Clio 2 Group N equipped with the ST66 gearbox . As the exclusive distributor ...
                                  €758.77Price
                                  Sur commande ou en cours de réappro
                                  €388.01 Price
                                  Sur commande ou en cours de réappro
                                  €388.01 Price
                                      Do not let your competitors outpace you at the end of the straightaway. The SADEV 5th gear ratio 23/26 is the ultimate component to exploit the maximum reach of your ST75-14 sequential gearbox . As the exclusive SADEV distributor for the Renault Clio 3 Cup , Optimiz Access provides this high-precision sprocket, essential for...
                                      €388.01Price
                                          Do not let your competitors outpace you at the end of the straightaway. The SADEV 5th gear ratio 23/26 is the ultimate component to exploit the maximum reach of your ST75-14 sequential gearbox . As the exclusive SADEV distributor for the Renault Clio 3 Cup , Optimiz Access provides this high-precision sprocket, essential for...
                                          €388.01Price
                                          Axe de sélection de 5ème Clio Gr N
                                              Do not compromise the precision and reliability of your gearbox! This SADEV 5th Gear Selector Shaft (Reference F1903074 / F19030291) is an absolutely essential original SADEV part for the SADEV ST66 gearbox fitted to your Renault Clio 2...
                                              €260.66Price
                                              Axe de sélection de 5ème Clio Gr N
                                                  Do not compromise the precision and reliability of your gearbox! This SADEV 5th Gear Selector Shaft (Reference F1903074 / F19030291) is an absolutely essential original SADEV part for the SADEV ST66 gearbox fitted to your Renault Clio 2...
                                                  €260.66Price
                                                  Insert Taraudé de 5ème ST66 Clio GrN
                                                      An original SADEV part, this 5th Gear Threaded Insert (F1903031) is essential for mounting the gearing and securing the 5th gear on the shaft of your SADEV ST66 gearbox. Its failure can cause dangerous play in the 5th gear assembly of your Renault Clio 2...
                                                      €19.01Price
                                                      Insert Taraudé de 5ème ST66 Clio GrN
                                                          An original SADEV part, this 5th Gear Threaded Insert (F1903031) is essential for mounting the gearing and securing the 5th gear on the shaft of your SADEV ST66 gearbox. Its failure can cause dangerous play in the 5th gear assembly of your Renault Clio 2...
                                                          €19.01Price
                                                          Ecrou insert ST66 Clio Gr N
                                                              Take no risks with your gearing fixation! This SADEV 5th Gear Threaded Insert Nut (F1903033) is a crucial original SADEV part to lock the entire 5th gear assembly onto the shaft of your SADEV ST66 gearbox. Its replacement is imperative during maintenance of the 5th gear on your...
                                                              €10.04Price
                                                              Ecrou insert ST66 Clio Gr N
                                                                  Take no risks with your gearing fixation! This SADEV 5th Gear Threaded Insert Nut (F1903033) is a crucial original SADEV part to lock the entire 5th gear assembly onto the shaft of your SADEV ST66 gearbox. Its replacement is imperative during maintenance of the 5th gear on your...
                                                                  €10.04Price
                                                                  Roue de 5ème 22 dents ( 23 / 22 ) Clio Gr N
                                                                      The component that seals your top speed! This SADEV 5th gear wheel, 22 teeth (P/N: F1903006 ) is the driven gear for the 5th ratio, which must mate perfectly with the 23-tooth 5th gear pinion on the secondary shaft of your Renault Clio 2 Gr N's ST66 dog-ring gearbox . Worn teeth or damaged dog rings on this...
                                                                      €165.20Price
                                                                      Roue de 5ème 22 dents ( 23 / 22 ) Clio Gr N
                                                                          The component that seals your top speed! This SADEV 5th gear wheel, 22 teeth (P/N: F1903006 ) is the driven gear for the 5th ratio, which must mate perfectly with the 23-tooth 5th gear pinion on the secondary shaft of your Renault Clio 2 Gr N's ST66 dog-ring gearbox . Worn teeth or damaged dog rings on this...
                                                                          €165.20Price
                                                                          Baladeur de 5ème Clio Gr N
                                                                              The 5th gear is critical for your maximum performance! This 5th speed slider (Ref. F1903013 ) from SADEV is an original racing part , essential for the reliability of the ST66...
                                                                              €138.70Price
                                                                              Baladeur de 5ème Clio Gr N
                                                                                  The 5th gear is critical for your maximum performance! This 5th speed slider (Ref. F1903013 ) from SADEV is an original racing part , essential for the reliability of the ST66...
                                                                                  €138.70Price
                                                                                  Support baladeur de 5ème Clio Gr N
                                                                                      Ensure the rigidity and precision of your SADEV gearbox ! This 5th speed slider support (Ref. F1903014 ) is a SADEV brand part designed for the <strong...
                                                                                      €72.92Price
                                                                                      Support baladeur de 5ème Clio Gr N
                                                                                          Ensure the rigidity and precision of your SADEV gearbox ! This 5th speed slider support (Ref. F1903014 ) is a SADEV brand part designed for the <strong...
                                                                                          €72.92Price
                                                                                          Bague épaulée de 5ème Clio Gr N
                                                                                              Do not compromise the longevity of your SADEV ST66 gearbox ! This 5th gear stepped thrust washer (Ref. F1903015 ) is an essential SADEV brand part for managing axial...
                                                                                              €63.46Price
                                                                                              Bague épaulée de 5ème Clio Gr N
                                                                                                  Do not compromise the longevity of your SADEV ST66 gearbox ! This 5th gear stepped thrust washer (Ref. F1903015 ) is an essential SADEV brand part for managing axial...
                                                                                                  €63.46Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €388.01 Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €388.01 Price
                                                                                                      Do not let a restricted transmission sabotage your top speed at the finish line. The SADEV 6th gear ratio 26/26 is the final essential component to exploit 100% of your ST75-14 sequential gearbox potential. As the exclusive SADEV distributor for the Renault Clio 3 Cup , Optimiz Access offers this genuine part to guarantee...
                                                                                                      €388.01Price
                                                                                                          Do not let a restricted transmission sabotage your top speed at the finish line. The SADEV 6th gear ratio 26/26 is the final essential component to exploit 100% of your ST75-14 sequential gearbox potential. As the exclusive SADEV distributor for the Renault Clio 3 Cup , Optimiz Access offers this genuine part to guarantee...
                                                                                                          €388.01Price
                                                                                                          Cale de réglage anti rotation
                                                                                                              Do not compromise your 5th gear assembly! This SADEV Anti-Rotation Adjustment Shim (F1903032) is a vital original SADEV part for locking the threaded insert onto the shaft of your SADEV ST66 gearbox. Its role is to prevent the accidental rotation of the 5th gear...
                                                                                                              €3.50Price
                                                                                                              Cale de réglage anti rotation
                                                                                                                  Do not compromise your 5th gear assembly! This SADEV Anti-Rotation Adjustment Shim (F1903032) is a vital original SADEV part for locking the threaded insert onto the shaft of your SADEV ST66 gearbox. Its role is to prevent the accidental rotation of the 5th gear...
                                                                                                                  €3.50Price
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €62.56 Price
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €62.56 Price
                                                                                                                      The precision of your ST75-14 sequential gearbox lies in the details. Without the correct SADEV Belleville Washer F=0.80 (Ref. F9004242 ), you lose the ideal functional clearance , leading to abnormal wear and threatening the reliability of your Clio 2 X65 Cup ...
                                                                                                                      €62.56Price
                                                                                                                          The precision of your ST75-14 sequential gearbox lies in the details. Without the correct SADEV Belleville Washer F=0.80 (Ref. F9004242 ), you lose the ideal functional clearance , leading to abnormal wear and threatening the reliability of your Clio 2 X65 Cup ...
                                                                                                                          €62.56Price
                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                          €337.94 Price
                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                          €337.94 Price
                                                                                                                              Ensure seamless power delivery without mechanical failure. The SADEV clutch shaft (references 0101908001 / F1908001 ) is the vital extension of the input shaft for your ST75-14 sequential gearbox . As the exclusive SADEV distributor for the Renault Clio 3 Cup , Optimiz Access provides this...
                                                                                                                              €337.94Price
                                                                                                                                  Ensure seamless power delivery without mechanical failure. The SADEV clutch shaft (references 0101908001 / F1908001 ) is the vital extension of the input shaft for your ST75-14 sequential gearbox . As the exclusive SADEV distributor for the Renault Clio 3 Cup , Optimiz Access provides this...
                                                                                                                                  €337.94Price
                                                                                                                                  En Stock
                                                                                                                                  €26.60 Price
                                                                                                                                  En Stock
                                                                                                                                  €26.60 Price
                                                                                                                                  Cale de secondaire Clio Gr N
                                                                                                                                      Do not compromise the axial adjustment of your SADEV ST66 gearbox ! This countershaft shim (Ref. F1903028 ) is an essential SADEV brand part to ensure mounting...
                                                                                                                                      €26.60Price
                                                                                                                                      Cale de secondaire Clio Gr N
                                                                                                                                          Do not compromise the axial adjustment of your SADEV ST66 gearbox ! This countershaft shim (Ref. F1903028 ) is an essential SADEV brand part to ensure mounting...
                                                                                                                                          €26.60Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €62.56 Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €62.56 Price
                                                                                                                                              Do not sacrifice the grip and traction of your Clio 2 X65 Cup . Without this SADEV Belleville Washer Galbe 1 (Ref. F9001096 ) in perfect condition, you lose the essential preload of your SADEV limited slip differential , leading to a loss of efficiency on...
                                                                                                                                              €62.56Price
                                                                                                                                                  Do not sacrifice the grip and traction of your Clio 2 X65 Cup . Without this SADEV Belleville Washer Galbe 1 (Ref. F9001096 ) in perfect condition, you lose the essential preload of your SADEV limited slip differential , leading to a loss of efficiency on...
                                                                                                                                                  €62.56Price
                                                                                                                                                  SADEV Differential Housing F1908300 - ST75 Sequential GearboxSADEV Differential Housing F1908300 - ST75 Sequential Gearbox
                                                                                                                                                      The SADEV Differential Housing (references F1908300 and 0101908300 ) is the main structure that encapsulates and protects the discs of your SADEV limited-slip differential . This genuine part is vital for the precision of the SADEV ST75 sequential gearbox equipping your Renault Clio 3 X85 Cup ....
                                                                                                                                                      €710.82Price
                                                                                                                                                      SADEV Differential Housing F1908300 - ST75 Sequential GearboxSADEV Differential Housing F1908300 - ST75 Sequential Gearbox
                                                                                                                                                          The SADEV Differential Housing (references F1908300 and 0101908300 ) is the main structure that encapsulates and protects the discs of your SADEV limited-slip differential . This genuine part is vital for the precision of the SADEV ST75 sequential gearbox equipping your Renault Clio 3 X85 Cup ....
                                                                                                                                                          €710.82Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €11.38 Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €11.38 Price
                                                                                                                                                              Do not sacrifice the speed of your gear shifts. Without this SADEV shift finger (Ref. F0077120 ) in perfect condition, you risk catching or slow speed selection in your ST75-14 sequential gearbox on the Clio 2 X65 Cup . This genuine SADEV part is...
                                                                                                                                                              €11.38Price
                                                                                                                                                                  Do not sacrifice the speed of your gear shifts. Without this SADEV shift finger (Ref. F0077120 ) in perfect condition, you risk catching or slow speed selection in your ST75-14 sequential gearbox on the Clio 2 X65 Cup . This genuine SADEV part is...
                                                                                                                                                                  €11.38Price
                                                                                                                                                                  SADEV F0085003 Slider Support for Renault Clio 2 X65 Cup ST75 Sequential GearboxSADEV F0085003 Slider Support for Renault Clio 2 X65 Cup ST75 Sequential Gearbox
                                                                                                                                                                      Do not compromise the precision of your gear shifts. Without this genuine SADEV slider support (Ref. F0085003 / 0100085003 ), you risk excessive play and imprecise engagements in your ST75 sequential gearbox on the Clio 2 X65 Cup . This SADEV part is...
                                                                                                                                                                      €160.49Price
                                                                                                                                                                      SADEV F0085003 Slider Support for Renault Clio 2 X65 Cup ST75 Sequential GearboxSADEV F0085003 Slider Support for Renault Clio 2 X65 Cup ST75 Sequential Gearbox
                                                                                                                                                                          Do not compromise the precision of your gear shifts. Without this genuine SADEV slider support (Ref. F0085003 / 0100085003 ), you risk excessive play and imprecise engagements in your ST75 sequential gearbox on the Clio 2 X65 Cup . This SADEV part is...
                                                                                                                                                                          €160.49Price
                                                                                                                                                                          Disque de friction
                                                                                                                                                                              Do not let a failing transmission compromise your track performance. The SADEV friction disc (ref. F1401086) is the critical component to ensure perfect torque transfer for your sequential gearbox. Specifically engineered for the Renault Clio 2 Gr.N , Twingo R2 , and Clio 3 X85 Cup , this genuine part provides the reliability...
                                                                                                                                                                              €94.03Price
                                                                                                                                                                              Disque de friction
                                                                                                                                                                                  Do not let a failing transmission compromise your track performance. The SADEV friction disc (ref. F1401086) is the critical component to ensure perfect torque transfer for your sequential gearbox. Specifically engineered for the Renault Clio 2 Gr.N , Twingo R2 , and Clio 3 X85 Cup , this genuine part provides the reliability...
                                                                                                                                                                                  €94.03Price
                                                                                                                                                                                  SADEV F1502184 EV1 Secondary Shaft Nut for Renault Clio 2 X65 Cup ST75-14 GearboxSADEV F1502184 EV1 Secondary Shaft Nut for Renault Clio 2 X65 Cup ST75-14 Gearbox
                                                                                                                                                                                      The reliability of your SADEV ST75-14 sequential gearbox hinges on crucial details. Without this EV1 secondary shaft nut (Ref. F1502184 ) in perfect condition, you risk the internal components of your Clio 2 X65 Cup transmission disassembling under full load, which signifies a major...
                                                                                                                                                                                      €19.25Price
                                                                                                                                                                                      SADEV F1502184 EV1 Secondary Shaft Nut for Renault Clio 2 X65 Cup ST75-14 GearboxSADEV F1502184 EV1 Secondary Shaft Nut for Renault Clio 2 X65 Cup ST75-14 Gearbox
                                                                                                                                                                                          The reliability of your SADEV ST75-14 sequential gearbox hinges on crucial details. Without this EV1 secondary shaft nut (Ref. F1502184 ) in perfect condition, you risk the internal components of your Clio 2 X65 Cup transmission disassembling under full load, which signifies a major...
                                                                                                                                                                                          €19.25Price
                                                                                                                                                                                          Sadev F1903050 Limited Slip Differential Casing for Renault Clio 2 Gr N (ST66 Gearbox)Sadev F1903050 Limited Slip Differential Casing for Renault Clio 2 Gr N (ST66 Gearbox)
                                                                                                                                                                                              Don't risk losing tenths of a second when exiting corners! The Sadev F1903050 Limited Slip Differential Casing is the essential component to maximize the transmission efficiency of your Renault Clio 2 Gr N equipped with the Sadev ST66 Dog-Ring Gearbox . As an official distributor of Sadev ...
                                                                                                                                                                                              €718.96Price
                                                                                                                                                                                              Sadev F1903050 Limited Slip Differential Casing for Renault Clio 2 Gr N (ST66 Gearbox)Sadev F1903050 Limited Slip Differential Casing for Renault Clio 2 Gr N (ST66 Gearbox)
                                                                                                                                                                                                  Don't risk losing tenths of a second when exiting corners! The Sadev F1903050 Limited Slip Differential Casing is the essential component to maximize the transmission efficiency of your Renault Clio 2 Gr N equipped with the Sadev ST66 Dog-Ring Gearbox . As an official distributor of Sadev ...
                                                                                                                                                                                                  €718.96Price