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CVT and Drive Belts

(420 products)
Scooter Variators CVT Kits CVT Weights Drive Belts Pulleys CVT Accessories
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2Fast Airsal Aprilia Athena Bando Dayco Doppler GY6 Malossi MotoForce MotoForce Racing Naraku Peugeot Piaggio Polini RMS Stage6 Stage6 R/T Standard Parts Top Performances Yamaha
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Yamaha
Drive Belt original Yamaha Aerox
Article no.: OE-MAL5RNE76411000

Drive Belt original Yamaha Aerox

28,50 €
In stock
MotoForce Racing
Drive Belt MotoForce Racing 800x17,2x8,4mm CPI
Article no.: MF73.19527
1

Drive Belt MotoForce Racing 800x17,2x8,4mm CPI

15,50 €
In stock
RRP
21,50 €
-28% Discount
Sale
MotoForce Racing
CVT + Clutch Motoforce Racing Minarelli long / Aerox
Article no.: MS-PKMMFVARMINA
1

CVT + Clutch Motoforce Racing Minarelli long / Aerox

67,95 €
In stock
RRP
83,00 €
-18% Discount
Polini
Shells for variator tuning kit Polini
Article no.: U242_CAPUCHONS_POLINI
9

Shells for variator tuning kit Polini

from 9,00 €
In stock
Polini
Variator Weights Polini (x9)
Article no.: U242_GALETSUPERSPEED
9

Variator Weights Polini (x9)

from 5,70 €
In stock
Polini
Variator Weight Tuning Kit Polini
Article no.: BOITEGALETSPOLINI
30

Variator Weight Tuning Kit Polini

from 22,00 €
In stock
Naraku
CVT Variator Sport Naraku Morini
Article no.: NK900.92

CVT Variator Sport Naraku Morini

48,00 €
In stock
MotoForce Racing
CVT Racing Pulley Minarelli 13mm
Article no.: MF78.16609
14

CVT Racing Pulley Minarelli 13mm

25,00 €
In stock
Polini
Pulley Air Speed Polini Evolution 3 Piaggio NRG / Runner
Article no.: U244.0123

Pulley Air Speed Polini Evolution 3 Piaggio NRG / Runner

80,00 €
In stock
RRP
91,00 €
-12% Discount
Polini
CVT Pulley / Fanwheel Polini Air Speed Evolution 3 Minarelli
Article no.: U244.0124
2

CVT Pulley / Fanwheel Polini Air Speed Evolution 3 Minarelli

84,50 €
In stock
RRP
91,00 €
-7% Discount
MotoForce Racing
CVT Variator V.2 Motoforce Racing Piaggio
Article no.: MF75.14010
5

CVT Variator V.2 Motoforce Racing Piaggio

57,00 €
In stock
MotoForce Racing
CVT Variator V.2 Motoforce Racing China 2T 16mm
Article no.: MF75.19005
5

CVT Variator V.2 Motoforce Racing China 2T 16mm

30,00 €
In stock
RRP
36,00 €
-17% Discount
Sale
MotoForce Racing
CVT Variator V.2 Motoforce Racing Peugeot / Honda
Article no.: MF75.17503
9

CVT Variator V.2 Motoforce Racing Peugeot / Honda

41,00 €
In stock
RRP
41,50 €
-1% Discount
Polini
Drive Belt Evo Overrange Minarelli long / Morini
Article no.: U248.040.2
8

Drive Belt Evo Overrange Minarelli long / Morini

59,00 €
In stock
RRP
70,00 €
-16% Discount
MotoForce Racing
CVT Variator V.2 Motoforce Racing Minarelli
Article no.: MF75.16604
21

CVT Variator V.2 Motoforce Racing Minarelli

36,00 €
In stock
RRP
41,50 €
-13% Discount
MotoForce Racing
Drive Belt MotoForce Racing Peugeot
Article no.: MF73.17520
12

Drive Belt MotoForce Racing Peugeot

19,00 €
In stock
RRP
21,50 €
-12% Discount
MotoForce Racing
Drive Belt MotoForce Racing Yamaha Aerox (long)
Article no.: MF73.16621
56

Drive Belt MotoForce Racing Yamaha Aerox (long)

15,00 €
In stock
RRP
16,50 €
-9% Discount
MotoForce Racing
Drive Belt MotoForce Racing Piaggio after 1998 long
Article no.: MF73.14023
17

Drive Belt MotoForce Racing Piaggio after 1998 long

19,00 €
In stock
RRP
21,50 €
-12% Discount
Polini
Pulley / Fanwheel Polini Air Speed Evo Piaggio 12,5°
Article no.: P244.0132

Pulley / Fanwheel Polini Air Speed Evo Piaggio 12,5°

50,00 €
In stock
RRP
58,00 €
-14% Discount
Polini
Pulley / Fanwheel Polini Air Speed Evo Piaggio 14°
Article no.: P244.0131

Pulley / Fanwheel Polini Air Speed Evo Piaggio 14°

44,00 €
In stock
RRP
51,00 €
-14% Discount
Polini
V-Belt Evolution Aramid Piaggio Zip / Vespa 1994 - 2000
Article no.: U248.031.3

V-Belt Evolution Aramid Piaggio Zip / Vespa 1994 - 2000

57,00 €
In stock
RRP
67,00 €
-15% Discount
Doppler
CVT Doppler S1 Evo Minarelli
Article no.: CGN509128

CVT Doppler S1 Evo Minarelli

69,00 €
In stock
Doppler
CVT Doppler SX86 Minarelli
Article no.: CGN509125

CVT Doppler SX86 Minarelli

80,00 €
In stock
Standard Parts
CVT Yamaha / MBK 50cc 4T
Article no.: CGN532438

CVT Yamaha / MBK 50cc 4T

19,50 €
In stock
MotoForce Racing
CVT Kit MotoForce Racing Piaggio short after 1998
Article no.: MF75.14019

CVT Kit MotoForce Racing Piaggio short after 1998

94,57 €
In stock
96,50 €
-2% Set-Rabatt
MotoForce Racing
CVT Kit 729mm MotoForce Racing GY6 12 inch
Article no.: MF75.13912

CVT Kit 729mm MotoForce Racing GY6 12 inch

69,58 €
In stock
71,00 €
-2% Set-Rabatt
MotoForce Racing
CVT Kit 669mm MotoForce Racing GY6 10 inch
Article no.: MF75.13911

CVT Kit 669mm MotoForce Racing GY6 10 inch

66,64 €
In stock
68,00 €
-2% Set-Rabatt
MotoForce Racing
CVT Kit + Clutch MotoForce Racing Piaggio short after 1998
Article no.: MF75.14018

CVT Kit + Clutch MotoForce Racing Piaggio short after 1998

167,58 €
In stock
171,00 €
-2% Set-Rabatt
MotoForce Racing
CVT Kit + Clutch MotoForce Racing Peugeot
Article no.: MF75.17512

CVT Kit + Clutch MotoForce Racing Peugeot

145,04 €
In stock
148,00 €
-2% Set-Rabatt
MotoForce Racing
CVT Kit + Clutch MotoForce Racing Minarelli
Article no.: MF75.16611

CVT Kit + Clutch MotoForce Racing Minarelli

136,71 €
In stock
139,50 €
-2% Set-Rabatt
MotoForce Racing
CVT Kit + Clutch MotoForce Racing CPI / Keeway (13mm)
Article no.: MF75.19012

CVT Kit + Clutch MotoForce Racing CPI / Keeway (13mm)

147,49 €
In stock
150,50 €
-2% Set-Rabatt
MotoForce Racing
CVT Kit + Clutch MotoForce Racing CPI / Keeway (16mm)
Article no.: MF75.19013

CVT Kit + Clutch MotoForce Racing CPI / Keeway (16mm)

132,79 €
In stock
135,50 €
-2% Set-Rabatt
MotoForce Racing
CVT Kit + Clutch MotoForce Racing Piaggio long 1998 - 2010
Article no.: MF75.14016

CVT Kit + Clutch MotoForce Racing Piaggio long 1998 - 2010

157,78 €
In stock
161,00 €
-2% Set-Rabatt
MotoForce Racing
CVT Kit MotoForce Racing Peugeot horizontal
Article no.: MF75.17511

CVT Kit MotoForce Racing Peugeot horizontal

62,92 €
In stock
64,20 €
-2% Set-Rabatt
Doppler
V-belt 737x18x8.5mm Doppler Kymco Agility 50 4-stroke 12”.
Article no.: CGN527391

V-belt 737x18x8.5mm Doppler Kymco Agility 50 4-stroke 12”.

12,00 €
In stock
RRP
14,00 €
-14% Discount
Sale
Polini
CVT Boss Polini 14.8x22x50 DLC coated
Article no.: P935.101

CVT Boss Polini 14.8x22x50 DLC coated

25,50 €
In stock
RRP
29,00 €
-12% Discount
Polini
CVT Boss Polini 16x22x50 DLC coated
Article no.: P935.100

CVT Boss Polini 16x22x50 DLC coated

21,00 €
In stock
RRP
29,00 €
-28% Discount
Sale
Polini
CVT Weights Polini (x6)
Article no.: P242.ROLLERWEIGHTS
37

CVT Weights Polini (x6)

from 8,00 €
In stock
18,00 €
-56% Discount
Standard Parts
CVT Sliders GY6 / Kymco / Peugeot (x3)
Article no.: SP-86475

CVT Sliders GY6 / Kymco / Peugeot (x3)

2,10 €
In stock
Polini
Drive Belt Evo Piaggio Zip / Vespa ET2 after 2000 short
Article no.: U248.044

Drive Belt Evo Piaggio Zip / Vespa ET2 after 2000 short

39,00 €
In stock
RRP
46,00 €
-15% Discount
Polini
Drive Belt Evo Yamaha Aerox (long)
Article no.: U248.040
15

Drive Belt Evo Yamaha Aerox (long)

36,00 €
In stock
RRP
42,00 €
-14% Discount
Polini
Drive Belt Evo Aerox 4T / China 2T / Minarelli short
Article no.: U248.030

Drive Belt Evo Aerox 4T / China 2T / Minarelli short

32,00 €
In stock
RRP
44,00 €
-27% Discount
Sale
Polini
Drive Belt Evo Piaggio after 1998 long
Article no.: U248.029

Drive Belt Evo Piaggio after 1998 long

41,00 €
In stock
RRP
48,00 €
-15% Discount
Polini
Drive Belt Polini Original Piaggio before 1998 long
Article no.: U248.011

Drive Belt Polini Original Piaggio before 1998 long

29,00 €
In stock
RRP
32,00 €
-9% Discount
Standard Parts
CVT Restrictor Ring 22x27x8mm Morini
Article no.: SP-90613

CVT Restrictor Ring 22x27x8mm Morini

3,20 €
In stock
Standard Parts
CVT Restrictor Ring 22x27x6mm Morini
Article no.: SP-90612

CVT Restrictor Ring 22x27x6mm Morini

2,90 €
In stock
Standard Parts
CVT Restrictor Ring 22x27x5mm Morini
Article no.: SP-90609

CVT Restrictor Ring 22x27x5mm Morini

3,20 €
In stock
Standard Parts
CVT Restrictor Ring 22x27x4mm Morini
Article no.: SP-90608

CVT Restrictor Ring 22x27x4mm Morini

3,20 €
In stock
Standard Parts
CVT Restrictor Ring 22x27x2mm Morini
Article no.: SP-90607

CVT Restrictor Ring 22x27x2mm Morini

3,10 €
In stock
Polini
Transmission / CVT Kit Polini Hi-Speed Piaggio long
Article no.: U241.672.2
2

Transmission / CVT Kit Polini Hi-Speed Piaggio long

113,00 €
In stock
RRP
132,00 €
-14% Discount
Polini
Transmission / CVT Kit Polini Hi-Speed Piaggio short
Article no.: U241.672.1
1

Transmission / CVT Kit Polini Hi-Speed Piaggio short

112,00 €
In stock
RRP
132,00 €
-15% Discount
MotoForce Racing
CVT Kit MotoForce Racing GY6 139QMB
Article no.: MF75.13910

CVT Kit MotoForce Racing GY6 139QMB

128,70 €
In stock
143,00 €
-10% Set-Rabatt
Piaggio
CVT Maintenance Kit Piaggio Typhoon 2004 - 2011 / Gilera Runner 2005 - 2017
Article no.: OE-PIA1R000426

CVT Maintenance Kit Piaggio Typhoon 2004 - 2011 / Gilera Runner 2005 - 2017

35,00 €
In stock
Sale
Piaggio
CVT Maintenance Kit Piaggio Typhoon 2T / Aprilia SR Motard 2T 2010 - 2014
Article no.: OE-PIA1R000444

CVT Maintenance Kit Piaggio Typhoon 2T / Aprilia SR Motard 2T 2010 - 2014

36,00 €
In stock
Piaggio
CVT Maintenance Kit Piaggio 50 ZIP 2T 2000 / Vespa LX 2T 2005 - 2013
Article no.: OE-PIA1R000441

CVT Maintenance Kit Piaggio 50 ZIP 2T 2000 / Vespa LX 2T 2005 - 2013

32,00 €
In stock
Athena
V-Belt Athena Maxi Platinum Peugeot Speedfight / TKR 100cc
Article no.: AT-S41PLAT015

V-Belt Athena Maxi Platinum Peugeot Speedfight / TKR 100cc

27,50 €
In stock
Polini
Variator Weights Polini (x12)
Article no.: 106000_A-GEWPOLINI_12STK

Variator Weights Polini (x12)

from 8,00 €
In stock
26,00 €
-69% Discount
Polini
Variator Weights Polini (x8)
Article no.: 106000_A-GEWPOLINI_8STK

Variator Weights Polini (x8)

from 6,20 €
In stock
31,00 €
-80% Discount
Polini
CVT Hi-Speed Polini Peugeot Kisbee 50 i.e. 2T AC Euro 4 after 2019
Article no.: P241.757

CVT Hi-Speed Polini Peugeot Kisbee 50 i.e. 2T AC Euro 4 after 2019

73,00 €
In stock
RRP
86,00 €
-15% Discount
Polini
CVT Hi-Speed Polini Peugeot Kisbee 50 4T Euro 5 after 2021
Article no.: P241.762

CVT Hi-Speed Polini Peugeot Kisbee 50 4T Euro 5 after 2021

73,00 €
In stock
RRP
86,00 €
-15% Discount
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Scooter CVT transmission

A scooter's CVT operates with three main components: the variator (front pulley), the drive belt, and the torque driver (rear pulley).

As an evolution of the drive systems found on classic mopeds, this system is more sophisticated and powerful. Naturally, it must be perfectly tuned to ensure optimal power transfer to the rear wheel.

Together with the centrifugal clutch, the CVT forms a continuously variable transmission (CVT) that provides smooth acceleration without shifting jolts.

How a Scooter CVT Works:

Variator:

A variator allows the gear ratio to be adjusted automatically and variably depending on engine speed. Although systems may differ in detail, the principle remains the same:

  • The variator is mounted directly on the crankshaft, meaning it rotates at the same speed as the engine.
  • It consists of a fixed and a movable pulley, with the drive belt running in between. These pulleys are conically shaped.
  • The movable part contains variator weights: small cylindrical components or rollers that are pushed outward by centrifugal force, thereby moving the pulley.
  • Since the drive belt is wedged between the two conical pulleys, it is forced to slide upward. This changes the gear ratio and the speed of the driven parts (similar to a sprocket on a motorcycle: the larger it is, the higher the top speed).

CVT Weights (rollers)

Heavier weights cause the variator to open more slowly, while lighter weights make it open faster. Adjusting the CVT weights is essential after any modifications that affect engine power to achieve proper power delivery.

With every engine modification, the weight should be adjusted. Various tuning kits are available to find the ideal setup.

Drive Belt:

The belt simply provides the connection between the variator at the front and the torque driver at the rear. It slides from the inside to the outside on the variator pulleys to vary the speed.

This raises a question: if the belt rises higher on the variator, doesn't it become too short? How is this length compensated for? You will find the answer here ↓

Torque Driver (Rear Pulley):

To compensate for the movement of the belt and the required length, manufacturers install a torque driver. This is the rear counterpart to the front variator unit, which, like the variator, features a fixed and a movable pulley. During acceleration, the drive belt pushes the pulleys apart to move inward. When letting off the throttle, the torque spring pushes the movable pulley back together so the drive belt can return to its starting position.

Contra springs, like rollers, are available in different strengths (stiffness levels). It is important to choose a version that matches the engine performance.

Sport and Racing CVT: Optimized Ramp Angles and Larger Diameter

To adapt the gear ratio to the power of the respective engine, manufacturers have optimized the variator elements as much as possible: different weights, various torque spring strengths, different roller diameters, and ramp angles. As you can see, the possibilities are very diverse.

Sport CVT: Standard Range

Whether you choose a sport cylinder or stay with the original 50cc, a sport variator with a standard diameter is usually sufficient. The optimized ramps are perfectly adequate for bringing moderate power increases to the road.

Racing CVT: Oversize Range

When a scooter engine is more heavily tuned, for example with a racing or high-end cylinder from 70cc upward, the working range of the standard variator often becomes too small. The engine then has significantly more torque and power, which can only be fully utilized with the help of pulleys with increased diameters (oversize).

This results in both better acceleration and a higher top speed.

All well-known racing brands offer such systems: Stage6 R/T Oversize, Malossi Overrange, Polini Evolution, etc.

ATTENTION: Only a sufficiently powerful engine will work correctly with this type of variator, so stay away from oversize CVTs for standard setups!

Scooter Variators in Our Shop

In our online shop, you will find all types of CVTs and CVT accessories. Sport and racing variators from popular brands like Malossi, Polini, Stage6 and Stage6 R/T as well as standard variators for original-style repairs. Of course, we also carry a large selection of drive belts (original or reinforced), weights, torque springs, shims, torque drivers, and even complete CVT kits!

Naturally, we have all parts in stock for the most common models with Piaggio, Minarelli, Peugeot, or Morini engines, such as for the Piaggio Zip, MBK Booster, Peugeot Kisbee, Suzuki Katana, and many more!

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