Secondary Shaft End Circlip SADEV Gearbox Clio R3

The Risk of Major Breakdown and Destruction Linked to a Fatigued Secondary Shaft Circlip

On a dog-engagement competition transmission, the secondary shaft undergoes massive torsional stresses and heavy impacts with every gear change. Attempting to reuse an old secondary shaft end circlip or installing a standard hardware store ring on a SADEV sequential gearbox is a critical mistake that can ruin your racing season. Under the effect of high-RPM vibrations from your Renault Clio R3 engine, a used circlip loses its original radial tension. If it pops out of its anchoring groove in the middle of a stage or circuit session, the secondary shaft suffers an immediate axial displacement. Without this vital retention, gear stack alignment is instantly broken: loose gears, sheared dog teeth, a punctured transmission casing, and an immediate retirement follow. Do not risk losing all the benefits of a race weekend and avoid a gearbox rebuild invoice worth thousands of euros for a single neglected locking part.

Certified Quality and Genuine Manufacturer Origin: Renault Sport – Reference 7711162214

This elastic retaining ring has absolutely nothing in common with standard industrial fasteners or hardware. This is the official Renault Sport secondary shaft circlip, specifically machined by racing transmission manufacturer SADEV under the exact reference number 7711162214. Manufactured from a premium, high thermal resilience spring steel alloy, it is engineered to spring back to its original shape after expansion and anchor itself firmly at the bottom of the shaft groove. It is the only homologated part capable of guaranteeing the global mechanical safety of your motorsport configuration.

Technical Specifications and Assembly Fitting

• Component Name: Gearbox Secondary Shaft End Retaining Circlip
• Gearbox Compatibility: SADEV brand sequential transmission
• Chassis Fitment: Renault Clio R3 (All Rally, Dirt, and Tarmac competition versions)
• Component Origin: Official Renault Sport / Alpine Racing Catalogue
• Manufacturer Reference: 7711162214

Secure Your Competition Transmission with Optimiz Access Expertise

Since 2010, Optimiz Access has established itself as the leading specialist in the distribution of high-performance technical parts, heavy mechanical servicing, and the premium customization of sports and premium vehicles. We put our engineering know-how at the service of demanding enthusiasts owning the finest mechanical signatures: Renault Sport, Porsche, Audi, VW, and Mercedes.

For the precision metrology, assembly, and build of your race gearboxes, we welcome you to our own specialized workshops located in the Hauts-de-France region. Our facilities are ideally situated near Cambrai, Valenciennes, Lille, Douai, Arras, Seclin, and Saint-Quentin. Because every day counts before a motorsport event, we ensure fast international shipping across the globe to secure your mechanical overhauls in time.

Frequently Asked Questions (FAQ) – Technical Advice for SADEV Gearboxes

Why is it mandatory to replace this circlip at every gearbox opening?

To be extracted or inserted into its seating groove, the secondary shaft end circlip must be expanded using adapted circlip pliers, which causes permanent structural deformation to the metal. If refitted onto the Renault Clio R3 shaft, its radial gripping force will be diminished, drastically increasing the risk of it backing out under the effect of engine vibrations at high RPMs.

Are there several models of retaining clips or rings for this transmission?

Yes, tolerances in motorsport are measured to the hundredth of a millimeter and part number 7711162214 is strictly calibrated for the secondary shaft diameter of this SADEV model. To draw a parallel, please note that two completely different spark plug models exist for the Renault Megane 4 RS depending on its exact production year. In case of any doubt regarding fitment, feel free to contact us with your vehicle identification number (VIN) so our team can provide the exact match confirmation.

How do I order matching locking components to close up my casing?

To carry out your workshop rebuild smoothly without any delays, oil seals, guidance bearings, shims, as well as all other complementary products are fully accessible at the bottom of this product page.