TL;DR: Choosing the right 50cc motorbike clutch kit comes down to your engine’s tune level. A standard clutch is fine for daily riding or a basic derestriction, while a reinforced clutch becomes essential the moment you seriously increase power output.
🔩 What is a 50cc motorbike clutch and what does it consist of?
The 50cc motorbike clutch is the system that transfers power from the engine to the gearbox. In our dedicated sub-category for 50cc motorbikes, we have brought together all the essential components: clutch discs, friction plates and complete kits. Springs and certain specific accessories are listed separately.
A complete kit typically includes:
- ➜ Friction discs (lined discs)
- ➜ Steel discs (plain discs)
- ➜ Sometimes a pressure plate, especially in CNC racing versions
🏍️ Which 50cc motorbike models are compatible?
We offer clutch plates and clutch kits suited to the most popular 50cc models:
- ➜ Rieju MRT
- ➜ Beta RR 50
- ➜ Sherco SM
- ➜ Derbi Senda
More broadly, our catalogue covers all Derbi and Minarelli AM6 engines, which power the vast majority of sporty 50cc motorbikes available on the European market.
⚙️ OEM-style clutch: when is it enough?
If you are not tuning your engine, or only doing so very mildly (for example a simple derestriction with a sport exhaust), a standard OEM-style clutch is more than adequate. Its key advantages are:
- ➜ Affordable price
- ➜ Easy installation, same dimensions as the original part
- ➜ Satisfactory longevity for normal use
This type of clutch is a perfect fit for riders who commute daily without pushing performance to the limit.
🚀 Reinforced clutch: a must with an engine kit
As soon as you go for a more serious engine build — big bore cylinder kit, racing carburettor, performance intake manifold — a reinforced clutch is non-negotiable. Here is why:
- ➜ Friction plates wear out much faster when more power needs to be transmitted
- ➜ An undersized clutch causes slipping, power loss and premature wear
- ➜ A complete kit with the right number of discs and spring preload matched to your cylinder kit ensures optimal power transfer
In this case, go for a complete Stage6 clutch kit, whose disc count and spring rating are specifically calculated for tuned engines.
🛒 Our recommended Stage6 R/T clutch kits
We source from the most respected brands in the market: Stage6, Stage6 R/T, Motoforce, Motoforce Racing, Malossi, Polini and Top Performance. Here are two must-have references:
6-disc Stage6 R/T clutch kit – AM6
The Stage6 R/T 6-disc clutch kit for AM6 engines is a racing benchmark designed for heavily tuned engines. With 6 friction discs, it delivers a larger contact surface and a significantly higher torque capacity than stock.
- ➜ 6 friction discs for improved heat dissipation
- ➜ Designed for AM6 engines (Derbi, Minarelli)
- ➜ Ideal for builds with a sport or racing cylinder kit
Stage6 R/T clutch pack with CNC pressure plate – Derbi
The Stage6 R/T clutch pack with CNC pressure plate for Derbi takes things even further with a CNC-machined pressure plate that guarantees perfect flatness and superior heat resistance.
- ➜ CNC-machined aluminium pressure plate
- ➜ Complete kit for Derbi models (Senda, GPR…)
- ➜ Racing finish, maximum performance and durability
🏁 How to choose between a standard and a reinforced clutch?
To sum up the decision logic for a 50cc motorbike clutch:
- ➜ Stock or lightly derestricted bike → OEM-style clutch, cost-effective and reliable
- ➜ Moderate build (70cc kit, sport carb) → reinforced 4- or 5-disc clutch
- ➜ Full race build (racing kit, big carb) → Stage6 R/T 6-disc clutch kit with CNC plate
Always check engine compatibility (AM6, Derbi, Minarelli) before ordering, and remember to adjust spring preload if you go for a complete kit.
❓ FAQ
Which 50cc motorbike clutch kit should I choose for a tuned AM6 engine?
For a tuned AM6 engine, go with a reinforced clutch kit such as the Stage6 R/T 6-disc kit. It provides a larger friction surface and better heat resistance, which is essential once power exceeds stock values.
Can a reinforced clutch be fitted to a stock 50cc motorbike?
Yes, a reinforced clutch can be installed on a stock bike, but there is no real need. It will simply be over-specified for the use case and will cost more than necessary. Save it for genuine engine builds.
What is the difference between a friction disc and a plain disc in a clutch kit?
Friction discs carry an organic or composite lining that provides grip. Plain steel discs are sandwiched between them and transmit torque. A complete kit includes both types, correctly paired.
Which 50cc motorbike brands are compatible with Stage6 clutches?
Stage6 and Stage6 R/T clutches are compatible with models fitted with Derbi and Minarelli AM6 engines, including: Derbi Senda, Rieju MRT, Beta RR 50, Aprilia RX/SX, Sherco SM and many more.
How much does a quality 50cc motorbike clutch kit cost?
A standard OEM-style clutch typically costs between €15 and €35. Reinforced Stage6 or Malossi kits range from €40 to €90, depending on the number of discs and included components (CNC plate or not).
💚 Find all Stage6 clutch kits for 50cc motorbikes in one place!
