Racing lightweight construction for the latest Yamaha R1 – maximum control in every corner

The STM SBK Racing Light Slipper Clutch FYA-S171 has been specifically designed for the Yamaha YZF-R1 and R1M RN65 (2020–2025) and is the ideal choice for riders seeking absolute precision, stability, and a significantly more agile clutch response.

Thanks to its weight-reduced design, the clutch responds noticeably more directly, improves the handling of your R1, and ensures smooth, precise gear shifts – perfect for sporty street riders and ambitious track day pilots.

Why this upgrade will immediately enhance your RN65

STM lists the Racing Light series as performance-optimized, lighter rotating wet slipper clutch – ideal for superbikes like the R1/R1M:

Your performance advantages

• Weight-reduced construction for faster response

• Less rear wheel stuttering during aggressive downshifting

• More stable corner entry → more confidence in lean angle

• Controlled drag torque thanks to STM racing technology

• Consistent performance even under high thermal load

• Perfectly tuned to the powerful CP4 engine of the RN65

The result:
A significant increase in riding control, agility, and stability – especially when you brake late, turn in hard, and want to accelerate precisely.

Compatibility

• Yamaha YZF-R1 RN65 (2020–2025)

• Yamaha YZF-R1M RN65 (2020–2025)

Who is this clutch ideal for?

For riders who ...

• desire maximum stability when downshifting

• prefer a more agile, lighter clutch system

• need the highest precision on track days and racetracks

• want high-quality racing technology for street use

• wish to fully exploit the potential of the RN65

Equip your Yamaha R1/R1M RN65 with the STM SBK Racing Light Slipper Clutch FYA-S171 and experience racing lightweight construction, uncompromising stability, and absolute control – with every gear shift.