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Clutch

(134 products)
50cc Bike Clutches Clutch Bells Torque Drives Clutch Springs Torque Springs Clutch Accessories
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Product type
Clutch Clutch accessories Clutch basket Clutch discs Clutch gear Clutch hub Clutch kit Clutch release lever Clutch springs Spring Washer Woodruff key Bearing ball Cable guide
Brand
Derbi Doppler KRM Malossi MotoForce MotoForce Racing MVT Polini Rieju Stage6 Stage6 R/T Standard Parts STR8 Top Performances Voca Racing Yamaha
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Doppler
Clutch Lever Stop Doppler CNC Neochrome Minarelli AM6
Article no.: CGN518091

Clutch Lever Stop Doppler CNC Neochrome Minarelli AM6

25,00 €
Currently not in stock
26,00 €
-4% Discount
Doppler
Clutch Lever Stop Doppler CNC gold Minarelli AM6
Article no.: CGN518090

Clutch Lever Stop Doppler CNC gold Minarelli AM6

23,00 €
Currently not in stock
27,00 €
-15% Discount
KRM
Clutch Springs KRM soft Minarelli AM6
Article no.: KR012F

Clutch Springs KRM soft Minarelli AM6

11,00 €
Currently not in stock
KRM
Clutch Springs KRM medium Minarelli AM6
Article no.: KR013F

Clutch Springs KRM medium Minarelli AM6

10,50 €
Currently not in stock
KRM
Clutch Springs KRM hard Minarelli AM6
Article no.: KR014F

Clutch Springs KRM hard Minarelli AM6

10,50 €
Currently not in stock
KRM
Clutch Springs KRM soft Derbi
Article no.: KR015F

Clutch Springs KRM soft Derbi

13,00 €
Currently not in stock
KRM
Clutch Springs KRM medium Derbi
Article no.: KR016F

Clutch Springs KRM medium Derbi

14,50 €
Currently not in stock
KRM
Clutch Springs KRM hard Derbi
Article no.: KR017F

Clutch Springs KRM hard Derbi

14,50 €
Currently not in stock
Polini
Clutch Springs Polini reinforced Minarelli AM6
Article no.: P228.0105

Clutch Springs Polini reinforced Minarelli AM6

19,00 €
Currently not in stock
RRP
20,00 €
-5% Discount
Top Performances
Clutch Springs Top Performances Derbi
Article no.: T9923180

Clutch Springs Top Performances Derbi

24,00 €
Currently not in stock
Top Performances
Crankshaft Key (clutch side) Top Performances AM6
Article no.: TAM00018

Crankshaft Key (clutch side) Top Performances AM6

2,10 €
Currently not in stock
RRP
2,20 €
-5% Discount
Standard Parts
Clutch Push Rod Minarelli AM6
Article no.: MF60.18872

Clutch Push Rod Minarelli AM6

6,60 €
Currently not in stock
Doppler
Clutch Lever Stop Doppler aluminium silver Minarelli AM6
Article no.: CGN511495

Clutch Lever Stop Doppler aluminium silver Minarelli AM6

23,00 €
Currently not in stock
30,50 €
-25% Discount
Doppler
Clutch Lever Stop Doppler aluminium blue Minarelli AM6
Article no.: CGN511493

Clutch Lever Stop Doppler aluminium blue Minarelli AM6

23,00 €
Currently not in stock
27,00 €
-15% Discount
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123

50cc clutch – the link between engine and drivetrain

How a motorcycle clutch works

The clutch is used to disengage or engage the engine and drivetrain. When the clutch lever is pulled, the connection between the engine and gearbox is interrupted. When the clutch is released, the engine and gearbox are reconnected.

To better understand how it works, it helps to look at the individual components:

The friction plates are driven via their outer tabs by the clutch basket, which is connected to the crankshaft. The steel plates engage via their inner tabs with the clutch hub, which drives the gearbox. The steel plates have no contact with the clutch basket, and the friction plates have no direct contact with the clutch hub.

When the clutch is pulled, a mechanism moves the pressure plate. The springs are compressed and the friction plates and steel plates separate. This prevents the crankshaft from driving the gearbox.

When the clutch is released, the springs expand and press the pressure plate back onto the plates. The friction plates engage again with the steel plates and transmit power to the clutch hub, which in turn drives the gearbox.

The linings of the friction plates are therefore made of high-friction materials to ensure reliable power transmission.

Clutch and tuning

As engine performance increases, the clutch must also be upgraded. A low-quality clutch cannot reliably transmit the power. Even if it does not slip immediately, it will wear out much faster.

Tuning clutches offer various options: reinforced friction materials on the clutch plates, stiffer springs for higher pressure on the pressure plate, or complete clutch kits with a larger friction surface and increased clamping force through additional plates and springs.

Note: A comparison between different motorcycles is useful here. A 50cc geared bike usually has a small clutch with 4 or 5 friction plates and 4 springs. A 450cc bike, on the other hand, has a significantly larger clutch with 7 or 8 plates and 5 or 6 springs.

Recommendations:

Depending on the setup, it is not always necessary to replace the entire clutch.

  • Using a sport cylinder? Reinforced clutch plates and springs are recommended.
    Example → MotoForce Racing, Stage6...
  • Using a racing cylinder with significantly higher displacement? A reinforced clutch kit, possibly with more plates, is recommended.
    Example → Stage6 R/T, MVT, KRM...
  • Running a heavily tuned racing engine with a high-end cylinder? In this case, a complete clutch kit with a specific clutch bell, clutch basket, and pressure plate, as well as more plates and springs, is recommended.
    Example → Top Performances TPR complete clutch kit

Note: For a stock or only derestricted engine, an OEM-quality clutch is usually sufficient, for example from MotoForce.

To ensure long service life of the clutch plates, the gearbox oil should be changed regularly according to the manufacturer’s specifications. Use high-quality gear oil.

50cc clutches in our shop

In our online shop, a wide range of products is available for maintenance, repair, and tuning. Complete clutch kits in OEM and reinforced versions are offered, as well as all individual components such as springs, clutch bells, clutch baskets, plates, and additional accessories. These parts come from well-known manufacturers such as Malossi, Top Performance, Stage6, Motoforce and are available for models including Rieju MRT, Derbi Euro3, Beta RR, Sherco SM.

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