STM Anti-Hopping Clutch SBK Racing Yamaha YZF-R1/M RN65 (20-25) FYA-S171
STM Anti-Hopping Clutch SBK Racing Yamaha YZF-R1/M RN65 (20-25) FYA-S171
Delivery time on request
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 noticeably more agile clutch behavior.
Thanks to its weight-reduced design, the clutch responds significantly 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 improve your RN65
STM lists the Racing Light series as a performance-optimized, lighter rotating wet slipper clutch – ideal for superbikes like the R1/R1M:
Your performance advantages
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Weight-reduced construction for quicker response
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Less rear wheel hopping during aggressive downshifting
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More stable corner entry → more confidence in lean angle
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Controlled engine braking thanks to STM racing technology
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Consistent performance even under high thermal load
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Perfectly tuned to the powerful CP4 engine of the RN65
The result:
A significant gain in riding control, agility, and stability – especially when you brake late, turn in hard, and want to get back on the throttle precisely.
Compatibility
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Yamaha YZF-R1 RN65 (2020–2025)
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Yamaha YZF-R1M RN65 (2020–2025)
Who is this clutch ideal for?
For riders who ...
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want maximum stability when downshifting
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prefer a more agile, lighter clutch system
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need the highest precision on track days and racetracks
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want high-quality racing technology for street use
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want to unleash the full 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.
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About Us
About Us
Our passion for quality and innovation drives us to provide you with the best products and services for motorcycle enthusiasts. From exclusive high-performance parts to custom solutions – your riding experience is our priority.
Shipping & Returns
Shipping & Returns
We ship with DHL and FedEx – express shipping is available upon request. If an item is in stock, express shipping can often be done within 1 business day. The regular delivery time is approximately 2-5 business days nationally, and about 1 week internationally. Please check the available shipping options and times in the cart, as we offer multiple shipping providers depending on the country.
Returns must be registered in advance via email and are possible according to our cancellation policy (14 days return request + 14 days return period after approval). Please note: Unregistered returns will not be accepted. All details regarding conditions, exceptions, and refunds can be found in our cancellation policy.
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More info in our FAQs
Write an email to our team – we will get back to you as soon as possible.
How long does it take to process my order?
How long does it take to process my order?
If the item is in stock, we usually process your order very quickly, often shipping it the same day.
Our processing times are Monday to Friday, 07:30–16:30.
Do you ship internationally?
Do you ship internationally?
Yes, we ship worldwide. Shipping is done via DHL or FedEx depending on the country and selection.
What is your return policy?
What is your return policy?
Returns must be registered in advance by email. You can request a return within 14 days of receipt and have an additional 14 days for the return shipment after approval.
Important: Unregistered returns will not be accepted. You can find all details in our cancellation policy.
What does 'Delivery time on request' mean?
What does 'Delivery time on request' mean?
'Delivery time on request' means that the item is usually not directly in stock and may need to be specially ordered. Please contact us before purchasing – we will check availability and provide you with the estimated delivery time.
Do you offer express shipping?
Do you offer express shipping?
Yes, we offer express shipping. If an item is in stock, shipping can often occur within 1 business day (depending on the country and shipping option). You can see the available shipping methods in the shopping cart.

