SADEV secondary shaft nut / Renault Clio 3 CUP / ST75-14

Product introduction

New SADEV secondary shaft nut for the ST75-14 sequential gearbox used in the Renault Clio 3 Cup. This part is designed for competition applications requiring a reliable, precise assembly that meets Renault Sport specifications.

Purpose of the part

The secondary shaft nut secures and tightens the components mounted on the gearbox's secondary shaft. It contributes to the mechanical integrity of the transmission assembly and ensures the proper operation of gear shifts in a sequential gearbox subjected to high stress.

Symptoms or consequences of a worn or defective part

• Abnormal play on the secondary shaft or within the internal gearbox stack.
• Risk of transmission components becoming loose.
• Less precise gear shifts or irregular gearbox operation.
• Premature wear of gears, spacers, bearings, or related components.
• Risk of internal failure during intensive use or competition.

Benefits of replacement

• Restores secure tightening of the secondary shaft.
• Preserves the operational precision of the SADEV ST75-14 sequential gearbox.
• Reduces the risk of play, loosening, and internal wear.
• Suitable for overhauls, preventive maintenance, or gearbox reassembly.
• New product, tailored to the requirements of motorsport.

Specifications

• Brand: SADEV.
• Type: new product.
• Designation: secondary shaft nut for a sequential gearbox.
• Application: SADEV ST75-14 box.
• Product reference: F9002038.
• Renault Sport reference: 01 09 002 038.
• Application: competition, transmission maintenance, sequential gearbox overhaul.

Vehicle compatibility

• Renault Clio 3 Cup equipped with the SADEV ST75-14 sequential gearbox.

Conclusion

This SADEV secondary shaft nut is an essential component for ensuring the proper internal retention of the ST75-14 sequential gearbox used in the Renault Clio 3 Cup—particularly during an overhaul or preparation for competitive use.