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Transmission

(2949 products)
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Bracket Bushings & Spacers Chain Chain accessories Chain guard Chain guide Chain kit Chain master link Chain roller Chain slider Chain tensioner Circlip Clutch accessories Clutch gear Clutch kit Clutch release lever Clutch springs CVT sliders Fairing Front sprocket Gearbox Gearbox accessories Gearbox bearing kit Gearshift lever Ignition lock Oil seal kit Piston pin bearing Pulley Pulley gear Chain rear sprocket Repair kit Spring Transmission Transmission accessories Transmission gear Washer Wheel axle Woodruff key Bearing ball Cable guide Fuel cap Gear selector shaft Overflow hose Pedal shaft Sprocket screws
Brand
AFAM Algi Aprilia Avoc Beta Buzzetti Conti CPI D.I.D Derbi Doppler GY6 Hot Rods IGM Iris Italjet Jasil KMC KRM Kymco Malossi Moose Racing Moto Master MotoForce MotoForce Racing Peugeot Piaggio Polini Polisport Pro Circuit Prox Renthal RFX Rieju RMS Scar Schmitt Stage6 Stage6 R/T Standard Parts STR8 Swiing Top Performances UFO Voca Racing Volt Racing Yamaha YCF YCF Factory
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Top Performances
Gearwheel 4th gear secondary shaft T24 Euro 3 (D50B0)
Article no.: TAM00040

Gearwheel 4th gear secondary shaft T24 Euro 3 (D50B0)

38,50 €
Currently not in stock
Top Performances
Primary Gear Shaft Top Performances Minarelli AM6 Z12 V2
Article no.: TAM00032

Primary Gear Shaft Top Performances Minarelli AM6 Z12 V2

63,00 €
Currently not in stock
Top Performances
Gearwheel 2nd gear primary shaft Top Performances T16 AM6 V2
Article no.: TAM00006

Gearwheel 2nd gear primary shaft Top Performances T16 AM6 V2

23,00 €
Currently not in stock
Jasil
Gearbox complete Top Racing AM6
Article no.: JA6250004

Gearbox complete Top Racing AM6

389,00 €
Currently not in stock
Standard Parts
Chain Tensioner steel - d.12mm Pit Bike / Dirt Bike
Article no.: MB2349

Chain Tensioner steel - d.12mm Pit Bike / Dirt Bike

5,30 €
Currently not in stock
Standard Parts
Cam Chain Tensioner d.10mm white
Article no.: MB2350

Cam Chain Tensioner d.10mm white

5,80 €
Currently not in stock
Standard Parts
Chain Roller pin 8mm Apollo black
Article no.: MB7510

Chain Roller pin 8mm Apollo black

3,80 €
Currently not in stock
Standard Parts
Chain Roller 10mm - black Pit Bike / Dirt Bike
Article no.: MB7511

Chain Roller 10mm - black Pit Bike / Dirt Bike

5,60 €
Currently not in stock
Standard Parts
Front Sprocket 428 - d.20mm Pit Bike / Dirt Bike
Article no.: MB_SPRO42820PIT/SIZE

Front Sprocket 428 - d.20mm Pit Bike / Dirt Bike

from 4,70 €
Currently not in stock
5,00 €
-6% Discount
Standard Parts
Chain Guide PTFE spacing 33mm black Pit Bike / Dirt Bike
Article no.: MB2477

Chain Guide PTFE spacing 33mm black Pit Bike / Dirt Bike

13,00 €
Currently not in stock
Standard Parts
Chain reinforced 120 links D.415 Doppler gold
Article no.: CGN504287

Chain reinforced 120 links D.415 Doppler gold

13,00 €
Currently not in stock
Doppler
Chain Master Link Doppler 420 red
Article no.: CGN504530

Chain Master Link Doppler 420 red

3,20 €
Currently not in stock
Doppler
Chain reinforced 138 links D.428 red
Article no.: CGN503981

Chain reinforced 138 links D.428 red

26,50 €
Currently not in stock
31,00 €
-15% Discount
Standard Parts
Rear Sprocket 48 teeth - 420 Rieju MRT
Article no.: EKP-149076

Rear Sprocket 48 teeth - 420 Rieju MRT

27,50 €
Currently not in stock
Doppler
Rear Sprocket 53 teeth - 428 Doppler aluminium CNC black Beta RR
Article no.: CGN500931

Rear Sprocket 53 teeth - 428 Doppler aluminium CNC black Beta RR

54,50 €
Currently not in stock
AFAM
Chain reinforced Racing 134 links 420 gold
Article no.: AFAM485374

Chain reinforced Racing 134 links 420 gold

46,00 €
Currently not in stock
Doppler
Chain reinforced 134 links D.420 Doppler chrome
Article no.: CGN501121

Chain reinforced 134 links D.420 Doppler chrome

30,50 €
Currently not in stock
Doppler
Chain reinforced 134 links D.420 Doppler white
Article no.: CGN501118

Chain reinforced 134 links D.420 Doppler white

30,00 €
Currently not in stock
Doppler
Chain Tensioner Doppler Alu red Beta
Article no.: CGN500942

Chain Tensioner Doppler Alu red Beta

25,50 €
Currently not in stock
Doppler
Chain Tensioner Doppler Alu black Beta
Article no.: CGN500943

Chain Tensioner Doppler Alu black Beta

25,50 €
Currently not in stock
Standard Parts
Rear Sprocket steel 62 teeth - 420 Rieju MRT
Article no.: MF89.00328

Rear Sprocket steel 62 teeth - 420 Rieju MRT

30,00 €
Currently not in stock
Standard Parts
Rear Sprocket steel 60 teeth - 420 Rieju MRT
Article no.: MF89.00327

Rear Sprocket steel 60 teeth - 420 Rieju MRT

29,00 €
Currently not in stock
Str8
Front Sprocket 420 orange Minarelli AM6
Article no.: STR-71ORANGEAM6

Front Sprocket 420 orange Minarelli AM6

from 9,00 €
Currently not in stock
10,00 €
-10% Discount
Standard Parts
Rear Sprocket 53 teeth - 420 blue Rieju MRT
Article no.: STR-701.53/BL

Rear Sprocket 53 teeth - 420 blue Rieju MRT

29,50 €
Currently not in stock
Standard Parts
Rear Sprocket steel 52 teeth - 420 Sherco Enduro 50
Article no.: MF89.00365

Rear Sprocket steel 52 teeth - 420 Sherco Enduro 50

25,50 €
Currently not in stock
Standard Parts
Rear Sprocket steel 53 teeth - 420 Rieju MRT
Article no.: MF89.00324

Rear Sprocket steel 53 teeth - 420 Rieju MRT

22,50 €
Currently not in stock
Standard Parts
Rear Sprocket steel 48 teeth - 420 Rieju MRT
Article no.: MF89.00321

Rear Sprocket steel 48 teeth - 420 Rieju MRT

25,50 €
Currently not in stock
IGM
Rear Sprocket steel 46 teeth - 428 IGM Rieju MRT
Article no.: IGM87871

Rear Sprocket steel 46 teeth - 428 IGM Rieju MRT

19,50 €
Currently not in stock
AFAM
Chain Kit AFAM 12x51 - 420 Beta RR after 2005
Article no.: AFAM500353

Chain Kit AFAM 12x51 - 420 Beta RR after 2005

57,50 €
Currently not in stock
Standard Parts
Front Sprocket 12 teeth 420 Derbi Euro2 before 1999
Article no.: L-SA5521

Front Sprocket 12 teeth 420 Derbi Euro2 before 1999

8,00 €
Currently not in stock
Derbi
Swingarm Slider Derbi Senda / Gilera SMT
Article no.: OE-DE00H01803331

Swingarm Slider Derbi Senda / Gilera SMT

25,50 €
Currently not in stock
Doppler
Rear Sprocket 53 teeth / 428 chain Doppler CNC aluminium red Beta RR
Article no.: CGN496464
1

Rear Sprocket 53 teeth / 428 chain Doppler CNC aluminium red Beta RR

58,00 €
Currently not in stock
Doppler
Rear Sprocket 53 teeth - 428 Doppler aluminium CNC red Sherco Enduro 50
Article no.: CGN496462
2

Rear Sprocket 53 teeth - 428 Doppler aluminium CNC red Sherco Enduro 50

64,50 €
Currently not in stock
Doppler
Rear Sprocket 53 teeth - 420 Doppler aluminium CNC gold Rieju MRT
Article no.: CGN491209

Rear Sprocket 53 teeth - 420 Doppler aluminium CNC gold Rieju MRT

56,00 €
Currently not in stock
Standard Parts
Secondary Gears / Output Shaft long - GY6 50cc 139QMB
Article no.: BT16623

Secondary Gears / Output Shaft long - GY6 50cc 139QMB

14,00 €
Currently not in stock
Rieju
Chain Tensioner OEM quality Rieju 50
Article no.: EKP-126742

Chain Tensioner OEM quality Rieju 50

13,50 €
Currently not in stock
Polini
Primary Gears Polini Piaggio Zip / Vespa ET2 after 2000
Article no.: P202.1392
1

Primary Gears Polini Piaggio Zip / Vespa ET2 after 2000

80,50 €
Currently not in stock
Doppler
Chain Kit aluminium gold 13x53 - 420 Doppler Rieju MRT
Article no.: CGN491213
5

Chain Kit aluminium gold 13x53 - 420 Doppler Rieju MRT

99,00 €
Currently not in stock
Polini
Primary Gears Polini 15/38 2.53 / +22.9% Vespa ET2 98 / LX 50cc
Article no.: P202.1405

Primary Gears Polini 15/38 2.53 / +22.9% Vespa ET2 98 / LX 50cc

80,50 €
Currently not in stock
Derbi
Lever for gear selector shaft Derbi Euro 3 (D50B0)
Article no.: OE-DE847068
1

Lever for gear selector shaft Derbi Euro 3 (D50B0)

15,50 €
Currently not in stock
Standard Parts
Rear Sprocket 45 teeth Peugeot 103 SP / MV (d.94mm)
Article no.: CGN2933

Rear Sprocket 45 teeth Peugeot 103 SP / MV (d.94mm)

13,50 €
Currently not in stock
Standard Parts
Rear Sprocket 45 teeth Peugeot 103 SPX / RCX (Grimeca 98mm)
Article no.: CGN2949

Rear Sprocket 45 teeth Peugeot 103 SPX / RCX (Grimeca 98mm)

13,50 €
Currently not in stock
Standard Parts
Rear Sprocket 60 teeth Peugeot 103 SPX / RCX (Grimeca 98mm)
Article no.: CGN175202
1

Rear Sprocket 60 teeth Peugeot 103 SPX / RCX (Grimeca 98mm)

25,00 €
Currently not in stock
Standard Parts
Gear 11 teeth Peugeot 103 SPX / RCX
Article no.: CGN861

Gear 11 teeth Peugeot 103 SPX / RCX

6,70 €
Currently not in stock
Standard Parts
Rear Sprocket 56 teeth MBK 51 (Grimeca rim)
Article no.: CGN2973

Rear Sprocket 56 teeth MBK 51 (Grimeca rim)

19,50 €
Currently not in stock
Standard Parts
Rear Sprocket 52 teeth Peugeot 103 SP / SPX (Grimeca rim)
Article no.: CGN2952

Rear Sprocket 52 teeth Peugeot 103 SP / SPX (Grimeca rim)

14,50 €
Currently not in stock
Standard Parts
Rear Sprocket 52 teeth Peugeot 103 SP / MVL (steel rims)
Article no.: CGN2943

Rear Sprocket 52 teeth Peugeot 103 SP / MVL (steel rims)

17,00 €
Currently not in stock
AFAM
Chain Kit AFAM 12x53 Aprilia RS/RX/RS4 2006 - 2010
Article no.: CGN482389
3

Chain Kit AFAM 12x53 Aprilia RS/RX/RS4 2006 - 2010

66,00 €
Currently not in stock
AFAM
Chain Kit AFAM 11x60 Yamaha TZR after 2003
Article no.: CGN478546
2

Chain Kit AFAM 11x60 Yamaha TZR after 2003

59,00 €
Currently not in stock
Polini
Kickstart Repair Kit Polini Piaggio
Article no.: P290.0136

Kickstart Repair Kit Polini Piaggio

34,50 €
Currently not in stock
Top Performances
Gearbox Washers and Circlips AM6 (1st series)
Article no.: T9935030

Gearbox Washers and Circlips AM6 (1st series)

15,50 €
Currently not in stock
Doppler
Rear Sprocket 53 teeth - 420 Doppler aluminium CNC purple Rieju MRT
Article no.: CGN533905

Rear Sprocket 53 teeth - 420 Doppler aluminium CNC purple Rieju MRT

53,00 €
Currently not in stock
Doppler
Rear Sprocket 53 teeth - 428 Doppler aluminium CNC purple Beta RR 50
Article no.: CGN533904

Rear Sprocket 53 teeth - 428 Doppler aluminium CNC purple Beta RR 50

55,50 €
Currently not in stock
Doppler
Rear Sprocket 53 teeth - 428 Doppler aluminium CNC purple Sherco Enduro 50
Article no.: CGN533902

Rear Sprocket 53 teeth - 428 Doppler aluminium CNC purple Sherco Enduro 50

60,50 €
Currently not in stock
Doppler
Rear Sprocket steel 53 teeth - 420 Doppler Origin Fantic XM / XE
Article no.: CGN534140

Rear Sprocket steel 53 teeth - 420 Doppler Origin Fantic XM / XE

30,50 €
Currently not in stock
Doppler
Rear Sprocket aluminium Fantic XM / XE Doppler 53 teeth - 420 red
Article no.: CGN534141

Rear Sprocket aluminium Fantic XM / XE Doppler 53 teeth - 420 red

49,50 €
Currently not in stock
50,50 €
-2% Discount
Standard Parts
Rear Sprocket steel 53 teeth 420 CPI SM
Article no.: MF89.00373

Rear Sprocket steel 53 teeth 420 CPI SM

18,00 €
Currently not in stock
Standard Parts
Chain Tensioner Set 12mm aluminium Puch / Simson / Kreidler / Sachs black
Article no.: MOF-43010/BK

Chain Tensioner Set 12mm aluminium Puch / Simson / Kreidler / Sachs black

9,90 €
Currently not in stock
Standard Parts
Rear Sprocket 42 teeth Peugeot 101 / 102
Article no.: CGN534532

Rear Sprocket 42 teeth Peugeot 101 / 102

15,00 €
Currently not in stock
Standard Parts
Swingarm Slider Rieju MRT
Article no.: MF89.00185

Swingarm Slider Rieju MRT

12,00 €
Currently not in stock
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The gearbox - tuning via gear ratio

The gearbox or transmission is a mechanical device that transmits a motion from one part to another, with the possibility of changing speed and torque by gearing up or gearing down. In a scooter, there is the primary transmission (input shaft to torque drive + intermediate shaft) and secondary transmission (intermediate shaft + output shaft to wheel). The gear ratio has a great impact on acceleration and top speed. A short gear ratio gives good acceleration, but is a little weak on speed, which can be compensated by a longer gear ratio.

Since the gearbox is a very complex subject, here we have a gearbox tutorial for you that will help you choose your new gear ratio.

The complex world of gear ratios

Do you simply want to replace gearbox components because they are defective or worn? Or do you want to adjust the gear ratio after upgrading to a more powerful cylinder? In both cases, we recommend replacing both primary and secondary gears at the same time.

For very powerful engines, we recommend selecting the gears in a way that the final drive ratio can adequately convert the power delivered by the engine. Using a longer gear ratio may actually worsen acceleration, so you should always match the gearbox to the available RPM. Longer does not always mean better, it is best to get enough information before installing new gears!

In our online store we carry a wide range of individual gears and complete gearboxess for most scooters, mopeds and maxi scooters. Leading brands such as

offer top quality products at fair prices, with which you can improve the performance of your engine.

If you simply want to overhaul your gearbox, we also carry original spare parts for you, for manufacturers like

and many more.

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