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Clutch

(137 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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Top Performances
Clutch Kit incl. Discs TPR Factory Minarelli AM6
Article no.: T99F5MAM10

Clutch Kit incl. Discs TPR Factory Minarelli AM6

374,00 €
In stock soon
Top Performances
Clutch Discs reinforced 4 plates Top Perf TPR Kevlar® AM6
Article no.: T9930850

Clutch Discs reinforced 4 plates Top Perf TPR Kevlar® AM6

48,50 €
In stock soon
Standard Parts
Clutch Push Rod Minarelli AM6
Article no.: MF60.18872

Clutch Push Rod Minarelli AM6

6,60 €
In stock soon
Standard Parts
Clutch Discs x2 OEM quality Suzuki SMX / RMX
Article no.: MF89.17000

Clutch Discs x2 OEM quality Suzuki SMX / RMX

20,00 €
In stock soon
MotoForce
Clutch Pressure Plate AM6
Article no.: MF60.18869

Clutch Pressure Plate AM6

12,50 €
Currently not in stock
13,00 €
-4% Discount
Stage6 R/T
Kit 6-Disc Clutch Stage6 R/T + Gear Oil Derbi
Article no.: S6-5059301/PACK

Kit 6-Disc Clutch Stage6 R/T + Gear Oil Derbi

139,65 €
Currently not in stock
147,00 €
-5% Set-Rabatt
Doppler
Clutch Lever Stop Doppler aluminium purple Minarelli AM6
Article no.: CGN533900

Clutch Lever Stop Doppler aluminium purple Minarelli AM6

23,00 €
Currently not in stock
27,00 €
-15% Discount
Doppler
Clutch Springs Doppler Vortex Derbi
Article no.: CGN508820

Clutch Springs Doppler Vortex Derbi

11,00 €
Currently not in stock
RRP
12,00 €
-8% Discount
Polini
Clutch Discs 5 discs Polini Racing Derbi
Article no.: P230.0012
9

Clutch Discs 5 discs Polini Racing Derbi

54,50 €
Currently not in stock
RRP
56,00 €
-3% Discount
Polini
Clutch Discs 5 discs Polini Racing Minarelli AM6
Article no.: P230.0011
13

Clutch Discs 5 discs Polini Racing Minarelli AM6

53,50 €
Currently not in stock
RRP
56,00 €
-4% Discount
Top Performances
Clutch Kit Top Performances AM6
Article no.: T9918550
6

Clutch Kit Top Performances AM6

277,00 €
Currently not in stock
RRP
373,00 €
-26% Discount
Standard Parts
Bushing clutch basket Derbi
Article no.: SP-49434

Bushing clutch basket Derbi

7,00 €
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
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
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 black Minarelli AM6
Article no.: CGN511494

Clutch Lever Stop Doppler aluminium black Minarelli AM6

23,00 €
Currently not in stock
26,00 €
-12% Discount
Doppler
Guard clutch release lever Doppler aluminium red AM6
Article no.: CGN511492

Guard clutch release lever Doppler aluminium red AM6

23,00 €
Currently not in stock
26,00 €
-12% 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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