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CVT and Drive Belts

(423 products)
Scooter Variators CVT Kits CVT Weights Drive Belts Pulleys CVT Accessories
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Bushings & Spacers CVT CVT accessories CVT cover CVT kit CVT restriction CVT sleeve CVT sliders CVT weights Kickstarter accessories Pulley Ramp plate Repair / maintenance kit V-belt Washer CVT shim Kickstart gear Kickstart washer Nut
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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
Variator Slider (X1) Yamaha Aerox
Article no.: OE-MAL4B0-E7653-00

Variator Slider (X1) Yamaha Aerox

4,30 €
In stock
Piaggio
V-Belt original Piaggio TPH after 2011 / Scarabeo / Liberty
Article no.: OE-PIA82712R

V-Belt original Piaggio TPH after 2011 / Scarabeo / Liberty

30,50 €
In stock
35,00 €
-13% Discount
Piaggio
Drive Belt original Piaggio after 1998 short
Article no.: OE-PIA82645R

Drive Belt original Piaggio after 1998 short

17,00 €
In stock
Piaggio
Variator Fanwheel plastic Piaggio NRG / Typhoon after 1998
Article no.: OE-PIA845611
2

Variator Fanwheel plastic Piaggio NRG / Typhoon after 1998

5,00 €
In stock
Piaggio
Front Pulley Piaggio NRG / Typhoon after 1998
Article no.: OE-PIA479561

Front Pulley Piaggio NRG / Typhoon after 1998

22,50 €
In stock
Piaggio
Drive Belt original Piaggio after 1998 long
Article no.: OE-PIA436864
2

Drive Belt original Piaggio after 1998 long

20,50 €
In stock
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

12,00 €
In stock
RRP
21,50 €
-44% Discount
Sale
MotoForce Racing
CVT + Clutch Motoforce Racing Minarelli long / Aerox
Article no.: MS-PKMMFVARMINA
1

CVT + Clutch Motoforce Racing Minarelli long / Aerox

66,15 €
In stock
73,50 €
-10% Set-Rabatt
Polini
Shells for variator tuning kit Polini
Article no.: U242_CAPUCHONS_POLINI
9

Shells for variator tuning kit Polini

from 10,50 €
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
Top Performances
CVT Kit Top Performances TPR GP Minarelli long / Aerox
Article no.: T9931670
15

CVT Kit Top Performances TPR GP Minarelli long / Aerox

85,50 €
In stock
RRP
113,00 €
-24% Discount
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

19,00 €
In stock
RRP
25,00 €
-24% Discount
Sale
Piaggio
Variator Sleeve Piaggio NRG / Typhoon after 1998
Article no.: OE-PIA480230

Variator Sleeve Piaggio NRG / Typhoon after 1998

30,50 €
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

36,00 €
In stock
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

34,00 €
In stock
RRP
41,50 €
-18% Discount
Sale
MotoForce Racing
Drive Belt MotoForce Racing Peugeot
Article no.: MF73.17520
12

Drive Belt MotoForce Racing Peugeot

12,00 €
In stock
RRP
21,50 €
-44% Discount
Sale
MotoForce Racing
Drive Belt MotoForce Racing Yamaha Aerox (long)
Article no.: MF73.16621
55

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

12,00 €
In stock
RRP
21,50 €
-44% Discount
Sale
GY6
CVT Variator OEM quality GY6 139QMB/139QMA
Article no.: OE-GY6BT12278
2

CVT Variator OEM quality GY6 139QMB/139QMA

13,50 €
In stock
14,00 €
-4% 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
CVT Polini Hi-Speed Piaggio 4T 50 iGet / Vespa Primavera
Article no.: P241.773

CVT Polini Hi-Speed Piaggio 4T 50 iGet / Vespa Primavera

72,50 €
In stock
RRP
85,50 €
-15% 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

65,00 €
In stock
Sale
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

95,55 €
In stock
97,50 €
-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

51,94 €
In stock
53,00 €
-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

168,56 €
In stock
172,00 €
-2% Set-Rabatt
MotoForce Racing
CVT Kit + Clutch MotoForce Racing Peugeot
Article no.: MF75.17512

CVT Kit + Clutch MotoForce Racing Peugeot

139,16 €
In stock
142,00 €
-2% Set-Rabatt
MotoForce Racing
CVT Kit + Clutch MotoForce Racing Minarelli
Article no.: MF75.16611

CVT Kit + Clutch MotoForce Racing Minarelli

129,85 €
In stock
132,50 €
-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)

130,83 €
In stock
133,50 €
-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)

131,81 €
In stock
134,50 €
-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

160,72 €
In stock
164,00 €
-2% Set-Rabatt
2Fast
Half Pulley 2Fast CNC Aluminium Piaggio
Article no.: 2FASTPULFIX01P

Half Pulley 2Fast CNC Aluminium Piaggio

99,50 €
In stock
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”.

14,00 €
In stock
Polini
CVT Variator Polini Speed Control Kymco 50cc 4T / GY6
Article no.: U241.647

CVT Variator Polini Speed Control Kymco 50cc 4T / GY6

68,00 €
In stock
RRP
80,00 €
-15% Discount
Polini
CVT Sleeve Polini 14.8x22x50 DLC coated
Article no.: P935.101

CVT Sleeve Polini 14.8x22x50 DLC coated

25,50 €
In stock
RRP
29,00 €
-12% Discount
Polini
CVT Sleeve Polini 16x22x49 DLC coated
Article no.: P935.099

CVT Sleeve Polini 16x22x49 DLC coated

23,00 €
In stock
RRP
29,00 €
-21% Discount
Sale
Polini
V-belt Polini Vespa Primavera 50 after 2018
Article no.: P248.135

V-belt Polini Vespa Primavera 50 after 2018

26,00 €
In stock
RRP
29,00 €
-10% Discount
Polini
CVT Weights Polini (x6)
Article no.: P242.ROLLERWEIGHTS
37

CVT Weights Polini (x6)

from 8,50 €
In stock
12,00 €
-29% Discount
Standard Parts
CVT Sliders GY6 / Kymco / Peugeot (x3)
Article no.: SP-86475

CVT Sliders GY6 / Kymco / Peugeot (x3)

2,10 €
In stock
Standard Parts
CVT Sliders 4T GY6 50cc (x3)
Article no.: SP-89922

CVT Sliders 4T GY6 50cc (x3)

1,40 €
In stock
Polini
Drive Belt Evo Aerox 4T / China 2T / Minarelli short
Article no.: U248.030

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

37,00 €
In stock
RRP
44,00 €
-16% 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
Drive Belt Evo Yamaha Aerox 100cc
Article no.: U248.041
1

Drive Belt Evo Yamaha Aerox 100cc

35,00 €
In stock
RRP
41,00 €
-15% Discount
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
MotoForce Racing
CVT Kit MotoForce Racing GY6 139QMB
Article no.: MF75.13910

CVT Kit MotoForce Racing GY6 139QMB

117,90 €
In stock
131,00 €
-10% Set-Rabatt
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Scooter CVT

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 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 based on engine speed. Although systems 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).

Note: 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.

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.

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

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

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 an increased diameter (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, or Stage6, 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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