Stage6 R/T Clutch Bell CNC 450g 107mm Minarelli / China 2-stroke
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Description
Stage6 R/T Clutch Bell CNC 450g 107mm Minarelli / China 2-stroke for optimum clutch engagement - arguably the best clutch bell on the market today. CNC-milled from one piece (as opposed to conventional pressed clutches), top quality materials and flawless workmanship - definitely hard to top!
It is available in 3 different versions with varying weight and design options (433, 450 or 479, with +/- 3g tolerance), the number is stamped on the bell. By choosing a specific weight, you can actually influence torque, shifting chracteristics and ultimately overall performance.
The sidewalls are equipped with cooling fins (similar to a cylinder) which allows for excellent cooling. The cooling ring is CNC-cut into the bell, not shrink-fitted like most. 3 small openings allow for clutch spring adjustment (Stage6 Torque Control MK 1 + 2) without having to take the bell off. Moreover, there are two indentations for a clutch holding tool to lock into which makes mounting and dismounting the bell really easy.
Little details like these add to the bell's overall awesomeness and are what make it ideally suited for (drag or track) racing.
ATTENTION! Only suitable for Minarelli engines that come with 3-shoe clutches (internal diameter of the bell = 107mm), please check before ordering.
450g version.
The function of the clutch bell
Even though the clutch bells of scooters (centrifugal clutch) and clutch baskets of motorcycles (with multi-plate clutch) look different, their function is basically the same. What changes is the way they are actuated.
On a scooter or moped with a centrifugal clutch, when the engine revs up, the clutch shoes spread and engage the clutch bell and cause it to rotate. The bell then drives the transmission, which in turn turns the wheel.
On a motorcycle or motocross bike with a multi-plate oil bath clutch, the lined clutch plates engage the plain metal plates, which in turn drive the bell to rotate the transmission and wheel. When the clutch is actuated, the lined discs no longer engage the plain discs and rotation comes to a halt.
In short, the bell ensures that rotation is transferred from the engine to the gearbox and wheel.
Clutch bell: performance
With a tuning clutch bell, it is possible to improve performance or reliability.
Choosing materials like steel instead of aluminum provides greater durability. The heavier weight of steel also leads to higher inertia, which in turn can lead to higher torque. This is the case with the Hinson Momentum bell, for example.
A bell can also have cut-outs to improve cooling and thus prevent wear. Therefore, on scooters, you often find ventilated racing clutch bells. Also in motocross, some clutch bells have more cut-outs than others.
In summary, the weight and ventilation of a clutch bell affect the overall performance of the engine.
How to replace a clutch ?
Stage6 R/T Clutch Bell CNC 450g 107mm Minarelli / China 2-stroke | |
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Article no. | S6-5516615 |
Weight | 0,56 kg |
Series | R/T |
Brand | Stage6 R/T |
Product type | Clutch bell |
Clutch diameter | 107mm |
Colour version | Black |
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