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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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Roue de 3ème 16 dents ( 16 / 22 ) Clio Gr N Référence: F1903002
€167.29Price
Roulement de Différentiel pour boite à crabot Gr N Repère 5 sur l’éclate de la clio gr N
€58.80Price
Optimize the performance of your SADEV ST66 gearbox with this original Renault Sport 1-2 dog gear (ref. F1903011). Designed by SADEV , it ensures precise and rapid gear changes, essential for competition in the Renault Clio 2 Gr N .
€202.03Price
Sur commande ou en cours de réappro
€948.16
Price
Sur commande ou en cours de réappro
€948.16
Price
Do not let a fragile transmission compromise your rally performance. This 11-tooth secondary shaft , specifically designed to mate with a 52-tooth crown wheel , is an official Renault Sport competition part manufactured by SADEV . Destined for the ST66 gearbox of the Renault Clio 2 Group N ,...
€948.16Price
Sur commande ou en cours de réappro
€948.16
Price
Sur commande ou en cours de réappro
€948.16
Price
The SADEV 12-Tooth Secondary Shaft (7711129468 / F19030201) is a core component of your SADEV ST66 gearbox. This original SADEV part ensures the vital connection to the differential via the 58-tooth crown wheel for the specific 12x58 final drive .
The replacement of a damaged...
€948.16Price
The SADEV 12x58 Final Drive Kit (12-tooth Secondary Shaft F1908058 and 58-tooth Crown Wheel F1908059) is the ultimate transmission part for your Renault Clio 3 X85 Cup equipped with the **SADEV ST75** sequential gearbox. Choosing this final drive ensures maximum acceleration and...
€2,211.77Price
Sur commande ou en cours de réappro
€427.51
Price
Sur commande ou en cours de réappro
€427.51
Price
Do not let an imprecise gear ratio compromise your lap times. The SADEV 1st gear ratio 14/33 is the key component to optimize starts and acceleration for your ST75-14 sequential gearbox . Engineered to withstand the extreme stresses of motorsport, this genuine part ensures transmission reliability where standard components fail. Secure your...
€427.51Price
The 15-Tooth Secondary Shaft is a fundamental component of the SADEV ST75 sequential transmission in your Renault Clio 3 X85 Cup . Specifically designed for the 15/58 final drive , this part ensures the correct gear reduction of your gearbox. Marketed under references F19080551 and 0119080551 ,...
€928.99Price
The SADEV 17-Tooth Secondary Shaft (references F9001002 / 0109001002 ) is the drive pinion for the 17/55 final drive ratio in your SADEV ST75 sequential gearbox . This piece is vital for transmitting engine power to the 55-tooth crownwheel and is homologated for the Renault Clio 2 X65 Cup ....
€928.99Price
Guarantee the precision of 2nd and 3rd gears in your SADEV ST66 gearbox ! This 2nd-3rd gear stepped thrust washer (Ref. F1903017 ) from SADEV is essential for axial...
€97.82Price
The SADEV 2.25mm Friction Disc (references F9001006 / 0109001006 ) is a crucial element of the limited-slip differential in your SADEV ST75 sequential gearbox . With a precise thickness of 2.25mm , it is designed to maintain the ramp angle setting and ensure the necessary lock-up for your...
€83.76Price
Sur commande ou en cours de réappro
€388.01
Price
Sur commande ou en cours de réappro
€388.01
Price
Do not let an unsuitable gear ratio break your momentum when exiting tight corners. The SADEV 2nd gear ratio 18/35 is the critical component to keep your ST75-14 sequential gearbox within its ideal torque range. As the exclusive SADEV distributor for the Renault Clio 3 Cup , Optimiz Access guarantees a genuine part essential...
€388.01Price
Do not jeopardize the reliability of your gear changes! This 3-4 dog ring slider (Ref. F1903205 ) from SADEV is the essential replacement part to maintain the performance of your ST66 sequential gearbox on the <strong...
€168.11Price
Do not compromise the precision of your 3-4 shifts! This 3-4 slider support (Ref. F1903016 ) from SADEV is a critical component for the ST66 sequential gearbox in your...
€115.82Price
Sur commande ou en cours de réappro
€388.01
Price
Sur commande ou en cours de réappro
€388.01
Price
Do not break your momentum in the heat of acceleration. The SADEV 3rd gear ratio 18/28 is the key element to ensure a perfect transition on your ST75-14 sequential gearbox . As the exclusive SADEV distributor for the Renault Clio 3 Cup , Optimiz Access offers this essential genuine part to keep your engine at the peak of its...
€388.01Price
Don't sacrifice the performance of your SADEV ST66 gearbox ! This 3rd speed wheel (22 teeth, 16/22 ratio) from SADEV (Ref. F1903206) is an essential spare part to maintain the reliability of your Renault Clio 2 Gr N .
At...
€213.70Price
A key element of the gearbox ratio ! This SADEV 4th gear pinion, 23 teeth (P/N: F1903003 ), mates with the 26-tooth 4th gear wheel to provide the specific 4th gear ratio for your Renault Clio 2 Gr N's ST66 dog-ring gearbox . Wear on the teeth or damage to the dog rings of this pinion results in difficult...
€151.32Price
Optimize your transmission's precision with this genuine 4th gear ratio (22/27) from the Renault Sport catalog. Specifically engineered for the SADEV dog-ring gearbox used in the Mégane N4 , this official component ensures absolute reliability during high-speed gear changes in rallies or track days. Do not let a worn gear...
€706.79Price
Sur commande ou en cours de réappro
€388.01
Price
Sur commande ou en cours de réappro
€388.01
Price
Stop plateauing at the end of the straightaway due to unsuitable gearing. The SADEV 4th gear ratio 22/29 is designed to maximize the reach of your ST75-14 sequential gearbox . As the exclusive SADEV distributor for the Renault Clio 3 Cup , Optimiz Access provides the genuine sprocket essential for ensuring optimal top speed...
€388.01Price
The 4th Gear Wheel (26 Teeth) , reference F1903207 , for the 23/26 ratio, from SADEV , is an essential spare part for the ST66 sequential gearbox of your Renault Clio 2 Group N . This competition gear ensures maximum reliability and...
€204.64Price
Don't let poor gear ratios ruin your stage times. This official 52-tooth crown wheel , manufactured by SADEV for Renault Sport , is the key component for your 11/52 final drive . Specifically designed for the Renault Clio 2 Gr.N equipped with the ST66 gearbox , it...
€565.21Price
The SADEV 54-Tooth Crownwheel (reference F1908252 ) is an essential element of the final drive in your SADEV ST75 sequential gearbox . Designed to be assembled with the 15-tooth secondary shaft, this genuine part ensures precise and reliable gearing for the Renault Clio 3 X85 Cup . OPTIMIZ ACCESS is a...
€1,031.42Price
The SADEV 55-Tooth Crownwheel (reference F9001012 ) is an essential component of the 17/55 final drive ratio in your SADEV ST75 sequential gearbox . This genuine part is crucial for gearing and must pair perfectly with the corresponding 17-tooth secondary shaft. It is primarily used on the Renault Clio 2 X65...
€1,031.42Price