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Transmission

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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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Standard Parts
Chain Tensioner Set 12mm aluminium Puch / Simson / Kreidler / Sachs red
Article no.: MOF-43010/RE

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

9,80 €
In stock
Standard Parts
Chain Tensioner Set 12mm aluminium Puch / Simson / Kreidler / Sachs blue
Article no.: MOF-43010/BL

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

9,70 €
In stock
Standard Parts
Rear Sprocket 48 teeth Peugeot 101 / 102
Article no.: CGN534531

Rear Sprocket 48 teeth Peugeot 101 / 102

15,00 €
In stock
Standard Parts
Shift Drum Lock Lever Kit Generic / CPI / KSR
Article no.: MF60.19508

Shift Drum Lock Lever Kit Generic / CPI / KSR

15,50 €
In stock
AFAM
Chain Kit Alu Sherco SM-R Afam 13x56 - 428 (original ratio)
Article no.: AFAM205407

Chain Kit Alu Sherco SM-R Afam 13x56 - 428 (original ratio)

86,50 €
In stock
AFAM
Chain Kit Sherco SE-R 50 Afam 14x56 - 428
Article no.: AFAM173014

Chain Kit Sherco SE-R 50 Afam 14x56 - 428

69,00 €
In stock
AFAM
Chain Kit Sherco SE-R 50 Afam 12x56 - 428 (original ratio)
Article no.: AFAM150806

Chain Kit Sherco SE-R 50 Afam 12x56 - 428 (original ratio)

62,50 €
In stock
AFAM
Chain Kit Aprilia SX 50 2012 - 2017 Afam 11x53 - 420 (original gear ratio)
Article no.: AFAM167783

Chain Kit Aprilia SX 50 2012 - 2017 Afam 11x53 - 420 (original gear ratio)

62,50 €
In stock
AFAM
Chain Kit Aprilia RX 50 2006 - 2017 Afam 11x53 - 420 (original gear ratio)
Article no.: AFAM31761

Chain Kit Aprilia RX 50 2006 - 2017 Afam 11x53 - 420 (original gear ratio)

55,00 €
In stock
AFAM
Chain Kit Aprilia RX 50 1999 - 2001 Afam 12x51 - 420 (original gear ratio)
Article no.: AFAM32036

Chain Kit Aprilia RX 50 1999 - 2001 Afam 12x51 - 420 (original gear ratio)

56,50 €
In stock
AFAM
Chain Kit Aprilia RX 2002 - 2006 Afam 11x51 - 420 original ratio
Article no.: AFAM31760

Chain Kit Aprilia RX 2002 - 2006 Afam 11x51 - 420 original ratio

56,00 €
In stock
AFAM
Chain Kit Aprilia RS 50 2006 - 2011 Afam 11x53 - 420 (original gear ratio)
Article no.: AFAM4305

Chain Kit Aprilia RS 50 2006 - 2011 Afam 11x53 - 420 (original gear ratio)

56,00 €
In stock
AFAM
Chain Kit Aprilia RS 50 2003 - 2005 Afam 11x47 - 420 (original gear ratio)
Article no.: AFAM4304

Chain Kit Aprilia RS 50 2003 - 2005 Afam 11x47 - 420 (original gear ratio)

64,50 €
In stock
AFAM
Chain Kit Aprilia MX / SM 50 2003 - 2005 Afam 11x51 - 420 (original gear ratio)
Article no.: AFAM32035

Chain Kit Aprilia MX / SM 50 2003 - 2005 Afam 11x51 - 420 (original gear ratio)

56,00 €
In stock
Standard Parts
Chain Guide Derbi Senda red
Article no.: MF89.00193/RE

Chain Guide Derbi Senda red

23,00 €
In stock
Standard Parts
Gear Selector Fork left secondary shaft AM6 Generic / CPI
Article no.: MF60.19507

Gear Selector Fork left secondary shaft AM6 Generic / CPI

14,50 €
In stock
Standard Parts
Gear Selector Fork right secondary shaft type AM6 Generic / CPI / KSR
Article no.: MF60.19506

Gear Selector Fork right secondary shaft type AM6 Generic / CPI / KSR

14,50 €
In stock
AFAM
Rear Sprocket steel Sherco HRD Afam 56 teeth - 428
Article no.: AFAM160814

Rear Sprocket steel Sherco HRD Afam 56 teeth - 428

65,00 €
In stock
AFAM
Rear Sprocket steel Sherco Enduro 50 Afam 53 teeth - 428
Article no.: AFAM201809

Rear Sprocket steel Sherco Enduro 50 Afam 53 teeth - 428

26,50 €
In stock
AFAM
Rear Sprocket steel Sherco Enduro 50 Afam 47 teeth - 428
Article no.: AFAM160817

Rear Sprocket steel Sherco Enduro 50 Afam 47 teeth - 428

25,00 €
In stock
AFAM
Rear Sprocket steel Peugeot / Rieju Afam 60 teeth - 420
Article no.: AFAM167819

Rear Sprocket steel Peugeot / Rieju Afam 60 teeth - 420

37,00 €
In stock
AFAM
Rear Sprocket steel Honda Monkey Z50 Afam 33 teeth - 420
Article no.: AFAM178952

Rear Sprocket steel Honda Monkey Z50 Afam 33 teeth - 420

16,50 €
In stock
AFAM
Rear Sprocket steel Derbi DRD Pro Afam 53 teeth - 420
Article no.: AFAM160792

Rear Sprocket steel Derbi DRD Pro Afam 53 teeth - 420

26,00 €
In stock
IGM
Rear Sprocket steel Derbi DRD Pro 50 teeth - 420
Article no.: MF89.00334

Rear Sprocket steel Derbi DRD Pro 50 teeth - 420

19,00 €
In stock
AFAM
Rear Sprocket steel Beta RR 50 Afam 60 teeth - 420
Article no.: AFAM167786

Rear Sprocket steel Beta RR 50 Afam 60 teeth - 420

28,00 €
In stock
Standard Parts
Shift Drum with forks and bolts Generic / CPI / KSR
Article no.: MF60.19504

Shift Drum with forks and bolts Generic / CPI / KSR

71,00 €
In stock
Str8
Clutch Cable Holder Derbi STR8 Black
Article no.: STR-021.03/BK

Clutch Cable Holder Derbi STR8 Black

4,70 €
In stock
Str8
Chain Guard Rieju MRT
Article no.: STR-730.01

Chain Guard Rieju MRT

30,00 €
In stock
RRP
35,00 €
-14% Discount
Str8
Chain Guard Beta RR 50 / 125
Article no.: STR-730.02

Chain Guard Beta RR 50 / 125

25,50 €
In stock
RRP
29,50 €
-14% Discount
Str8
Clutch Cable Holder Derbi STR8 Purple
Article no.: STR-021.03/PU

Clutch Cable Holder Derbi STR8 Purple

4,60 €
In stock
Str8
Clutch Cable Holder Derbi STR8 Red
Article no.: STR-021.03/RE

Clutch Cable Holder Derbi STR8 Red

4,50 €
In stock
Str8
Clutch Cable Holder Derbi STR8 Orange
Article no.: STR-021.03/OR

Clutch Cable Holder Derbi STR8 Orange

4,50 €
In stock
Str8
Clutch Cable Holder Derbi STR8 Gold
Article no.: STR-021.03/GO

Clutch Cable Holder Derbi STR8 Gold

4,50 €
In stock
Str8
Clutch Cable Holder Derbi STR8 Neochrome
Article no.: STR-021.03/NC

Clutch Cable Holder Derbi STR8 Neochrome

5,50 €
In stock
Str8
Clutch Cable Holder Derbi STR8 Carbon
Article no.: STR-021.03/CA

Clutch Cable Holder Derbi STR8 Carbon

4,90 €
In stock
Str8
Clutch Cable Holder Derbi STR8 Blue
Article no.: STR-021.03/BL

Clutch Cable Holder Derbi STR8 Blue

4,70 €
In stock
Str8
Clutch Cable Holder Derbi STR8 Alu
Article no.: STR-021.03/SI

Clutch Cable Holder Derbi STR8 Alu

4,50 €
In stock
Voca Racing
Gearbox Bearings Voca Yamaha DT 50 LC Portugal
Article no.: VCR-RD75130.GR

Gearbox Bearings Voca Yamaha DT 50 LC Portugal

36,00 €
In stock
40,50 €
-11% Discount
Sale
Voca Racing
Rear Sprocket Yamaha DT 50 LC Portugal 40 teeth - 420 Alu black
Article no.: VCR-SD450.YDT.40/BK

Rear Sprocket Yamaha DT 50 LC Portugal 40 teeth - 420 Alu black

42,00 €
In stock
Voca Racing
Rear Sprocket Yamaha DT 50 LC Portugal 40 teeth - 420 Alu blue
Article no.: VCR-SD450.YDT.40/BL

Rear Sprocket Yamaha DT 50 LC Portugal 40 teeth - 420 Alu blue

39,00 €
In stock
Voca Racing
Rear Sprocket Yamaha DT 50 LC Portugal 38 teeth 420 Alu red
Article no.: VCR-SD450.YDT.38/RE

Rear Sprocket Yamaha DT 50 LC Portugal 38 teeth 420 Alu red

36,00 €
In stock
Sale
Voca Racing
Rear Sprocket Yamaha DT 50 LC Portugal 38 teeth - 420 Alu black
Article no.: VCR-SD450.YDT.38/BK

Rear Sprocket Yamaha DT 50 LC Portugal 38 teeth - 420 Alu black

41,00 €
In stock
Voca Racing
Rear Sprocket Yamaha DT 50 LC Portugal 38 teeth - 420 Alu Neochrome
Article no.: VCR-SD450.YDT.38/TI

Rear Sprocket Yamaha DT 50 LC Portugal 38 teeth - 420 Alu Neochrome

43,00 €
In stock
Voca Racing
Rear Sprocket Yamaha DT 50 LC Portugal 38 teeth - 420 Alu blue
Article no.: VCR-SD450.YDT.38/BL

Rear Sprocket Yamaha DT 50 LC Portugal 38 teeth - 420 Alu blue

38,00 €
In stock
Voca Racing
Rear Sprocket Sherco SM-R 50cc 53 teeth - 428 Alu Neochrome
Article no.: VCR-SD450.SHO.53/TI

Rear Sprocket Sherco SM-R 50cc 53 teeth - 428 Alu Neochrome

55,50 €
In stock
Voca Racing
Rear Sprocket Sherco SM-R 50cc 53 teeth - 428 Alu blue
Article no.: VCR-SD450.SHO.53/BL

Rear Sprocket Sherco SM-R 50cc 53 teeth - 428 Alu blue

52,00 €
In stock
53,50 €
-3% Discount
Sale
Voca Racing
Rear Sprocket Sherco SM-R 50cc 53 teeth - 428 Alu red
Article no.: VCR-SD450.SHO.53/RE

Rear Sprocket Sherco SM-R 50cc 53 teeth - 428 Alu red

53,50 €
In stock
Voca Racing
Rear Sprocket Sherco SM-R 50cc 50 teeth - 428 Alu blue
Article no.: VCR-SD450.SHO.50/BL

Rear Sprocket Sherco SM-R 50cc 50 teeth - 428 Alu blue

51,00 €
In stock
52,50 €
-3% Discount
Sale
Voca Racing
Rear Sprocket Sherco SM-R 50cc 50 teeth - 428 Alu red
Article no.: VCR-SD450.SHO.50/RE

Rear Sprocket Sherco SM-R 50cc 50 teeth - 428 Alu red

51,00 €
In stock
52,50 €
-3% Discount
Sale
Voca Racing
Rear Sprocket Sherco SM-R 50cc 50 teeth - 428 Alu black
Article no.: VCR-SD450.SHO.50/BK

Rear Sprocket Sherco SM-R 50cc 50 teeth - 428 Alu black

51,00 €
In stock
52,50 €
-3% Discount
Sale
Voca Racing
Rear Sprocket Rieju MRT 50 teeth - 420 Voca Alu red
Article no.: VCR-SD450.MRT.50/RE

Rear Sprocket Rieju MRT 50 teeth - 420 Voca Alu red

46,00 €
In stock
48,00 €
-4% Discount
Sale
Voca Racing
Rear Sprocket Rieju MRT 50 teeth - 420 Voca Alu Neochrome
Article no.: VCR-SD450.MRT.50/TI

Rear Sprocket Rieju MRT 50 teeth - 420 Voca Alu Neochrome

54,00 €
In stock
Voca Racing
Rear Sprocket Rieju MRT 50 teeth - 420 Voca Alu blue
Article no.: VCR-SD450.MRT.50/BL

Rear Sprocket Rieju MRT 50 teeth - 420 Voca Alu blue

50,50 €
In stock
Voca Racing
Rear Sprocket Rieju MRT 48 teeth - 420 Voca Alu red
Article no.: VCR-SD450.MRT.48/RE

Rear Sprocket Rieju MRT 48 teeth - 420 Voca Alu red

45,00 €
In stock
Voca Racing
Rear Sprocket Rieju MRT 48 teeth - 420 Voca Alu blue
Article no.: VCR-SD450.MRT.48/BL

Rear Sprocket Rieju MRT 48 teeth - 420 Voca Alu blue

45,00 €
In stock
Voca Racing
Rear Sprocket Beta RR 50 teeth - 420 Voca Alu red
Article no.: VCR-SD450.BETA.50/RE

Rear Sprocket Beta RR 50 teeth - 420 Voca Alu red

46,00 €
In stock
48,00 €
-4% Discount
Sale
Voca Racing
Rear Sprocket Beta RR 50 teeth - 420 Voca Alu black
Article no.: VCR-SD450.BETA.50/BK

Rear Sprocket Beta RR 50 teeth - 420 Voca Alu black

46,00 €
In stock
48,00 €
-4% Discount
Sale
Voca Racing
Rear Sprocket Beta RR 50 teeth - 420 Voca Alu Neochrome
Article no.: VCR-SD450.BETA.50/TI

Rear Sprocket Beta RR 50 teeth - 420 Voca Alu Neochrome

49,50 €
In stock
Voca Racing
Rear Sprocket Beta RR 50 teeth - 420 Voca Alu blue
Article no.: VCR-SD450.BETA.50/BL

Rear Sprocket Beta RR 50 teeth - 420 Voca Alu blue

48,00 €
In stock
Voca Racing
Rear Sprocket Beta RR 48 teeth - 420 Voca Alu red
Article no.: VCR-SD450.BETA.48/RE

Rear Sprocket Beta RR 48 teeth - 420 Voca Alu red

41,00 €
In stock
43,00 €
-5% Discount
Sale
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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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