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Transmission

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Axle other Chain Chain accessories Chain guard Chain guide Chain kit Chain master link Chain roller Chain slider Chain tensioner Chassis screws Circlip Clutch accessories Clutch kit Crankshaft accessories CVT sliders Engine case accessories Fairing Front sprocket Gearbox Gearbox accessories Gearbox bearing kit Gearshift lever Ignition lock Kickstarter accessories Oil seal kit Piston pin bearing Pulley Pulley gear Chain rear sprocket Repair kit Screw kit Screws other Tank accessories Transmission Transmission accessories Transmission gear Washer Wheel axle Woodruff key
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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
Draw Key output shaft 3- / 4-speed Simson
Article no.: MOF-41386

Draw Key output shaft 3- / 4-speed Simson

7,10 €
In stock
Standard Parts
Lock Lever gearshift drum 4-speed Simson
Article no.: MOF-41364

Lock Lever gearshift drum 4-speed Simson

12,00 €
In stock
Standard Parts
Locking Washer clutch basket small Simson
Article no.: MOF-41339

Locking Washer clutch basket small Simson

1,80 €
In stock
Standard Parts
Idler Gear 31 teeth 4th gear Simson
Article no.: MOF-41292

Idler Gear 31 teeth 4th gear Simson

9,50 €
In stock
RRP
19,00 €
-50% Discount
Standard Parts
Fixed Gear 25 teeth 4th gear Simson
Article no.: MOF-41291

Fixed Gear 25 teeth 4th gear Simson

8,50 €
In stock
RRP
17,00 €
-50% Discount
Standard Parts
Spring inner gear shift lever Simson
Article no.: MOF-41290

Spring inner gear shift lever Simson

1,00 €
In stock
Standard Parts
Washer / Shim gearbox 24x35x1.4mm Simson
Article no.: MOF-41289

Washer / Shim gearbox 24x35x1.4mm Simson

4,00 €
In stock
Standard Parts
Gear Shift Spring Simson
Article no.: MOF-41286

Gear Shift Spring Simson

2,00 €
In stock
Standard Parts
Rear Sprocket Carrier Simson
Article no.: MOF-40834

Rear Sprocket Carrier Simson

3,70 €
In stock
Standard Parts
Chain Tensioner galvanized Simson
Article no.: MOF-40816

Chain Tensioner galvanized Simson

1,50 €
In stock
Standard Parts
Chain Master Link 1/2x5.4 Simson
Article no.: MOF-40815

Chain Master Link 1/2x5.4 Simson

1,20 €
In stock
Standard Parts
Front Sprocket 15 teeth 1/2x5.4 Simson
Article no.: MOF-40810

Front Sprocket 15 teeth 1/2x5.4 Simson

5,30 €
In stock
Standard Parts
Front Sprocket 13 teeth 1/2x5.4 Simson
Article no.: MOF-40808

Front Sprocket 13 teeth 1/2x5.4 Simson

5,30 €
In stock
Standard Parts
Chain 110 links 1/2x5,4 black Simson
Article no.: MOF-40804

Chain 110 links 1/2x5,4 black Simson

21,50 €
In stock
Standard Parts
Sealing Cap Gasket drive shaft Simson
Article no.: MOF-40751

Sealing Cap Gasket drive shaft Simson

1,20 €
In stock
Standard Parts
Rear Sprocket 22 teeth 415 Tomos A35
Article no.: MOF-40304

Rear Sprocket 22 teeth 415 Tomos A35

8,00 €
In stock
Standard Parts
Screw Set rear sprocket M7x25mm Tomos A35
Article no.: MOF-39730

Screw Set rear sprocket M7x25mm Tomos A35

2,90 €
In stock
D.I.D
Chain Kit D.I.D / PBR 520 ERT3 YZ 250 14/49 ultra-light rear sprocket
Article no.: 48012040

Chain Kit D.I.D / PBR 520 ERT3 YZ 250 14/49 ultra-light rear sprocket

142,00 €
In stock
AFAM
Chain Kit Afam 520 MR2 KTM 14/48
Article no.: 48011974

Chain Kit Afam 520 MR2 KTM 14/48

124,00 €
In stock
AFAM
Chain Kit Afam 520 MR2 YZ 125 13/51 ultra-light rear sprocket
Article no.: 48011608

Chain Kit Afam 520 MR2 YZ 125 13/51 ultra-light rear sprocket

106,00 €
In stock
D.I.D
Chain Kit D.I.D / PBR 520 DZ2 YZ 250 14/50
Article no.: 48011592

Chain Kit D.I.D / PBR 520 DZ2 YZ 250 14/50

104,00 €
In stock
AFAM
Chain Kit Afam 428 MX 85 KX 13/51 ultra-light rear sprocket
Article no.: 48011186

Chain Kit Afam 428 MX 85 KX 13/51 ultra-light rear sprocket

95,00 €
In stock
AFAM
Chain Kit Afam 520 MR2 CR 125 13/51 1990-1997
Article no.: 48010865

Chain Kit Afam 520 MR2 CR 125 13/51 1990-1997

109,00 €
In stock
AFAM
Chain Kit Afam 420 MX CR 85 15/55
Article no.: 48010416

Chain Kit Afam 420 MX CR 85 15/55

105,00 €
In stock
AFAM
Chain Kit Afam 420 MX KX 80 / 85 13/49 self-cleaning rear sprocket
Article no.: 48010263

Chain Kit Afam 420 MX KX 80 / 85 13/49 self-cleaning rear sprocket

99,00 €
In stock
AFAM
Chain Kit Afam 428 MX KTM 85 14 / 46
Article no.: 48010247

Chain Kit Afam 428 MX KTM 85 14 / 46

119,00 €
In stock
AFAM
Rear Sprocket Afam steel self-cleaning 50 teeth KTM / Husqvarna
Article no.: 1074718003

Rear Sprocket Afam steel self-cleaning 50 teeth KTM / Husqvarna

48,50 €
In stock
AFAM
Rear Sprocket Afam steel self-cleaning 51 teeth Yamaha YZ / YZF
Article no.: 1074433005

Rear Sprocket Afam steel self-cleaning 51 teeth Yamaha YZ / YZF

51,00 €
In stock
AFAM
Rear Sprocket Afam steel self-cleaning 48 teeth Kawasaki KX / KXF
Article no.: 1074558001

Rear Sprocket Afam steel self-cleaning 48 teeth Kawasaki KX / KXF

48,00 €
In stock
AFAM
Rear Sprocket Afam aluminium 41 teeth KTM / Husqvarna
Article no.: 1074736008

Rear Sprocket Afam aluminium 41 teeth KTM / Husqvarna

41,00 €
In stock
AFAM
Rear Sprocket Afam aluminium 45 teeth Kawasaki KX / KXF
Article no.: 1074602007

Rear Sprocket Afam aluminium 45 teeth Kawasaki KX / KXF

45,00 €
In stock
AFAM
Rear Sprocket Afam aluminium 48 teeth KTM / Husqvarna
Article no.: 1074736002

Rear Sprocket Afam aluminium 48 teeth KTM / Husqvarna

45,50 €
In stock
AFAM
Rear Sprocket Afam aluminium self-cleaning 50 teeth KTM / Husqvarna
Article no.: 1074735006

Rear Sprocket Afam aluminium self-cleaning 50 teeth KTM / Husqvarna

54,50 €
In stock
AFAM
Rear Sprocket Afam aluminium 45 teeth KTM / Husqvarna
Article no.: 1074736012

Rear Sprocket Afam aluminium 45 teeth KTM / Husqvarna

45,00 €
In stock
AFAM
Rear Sprocket Afam aluminium self-cleaning 420 / 51 teeth KX 80 / 85
Article no.: 1074595003

Rear Sprocket Afam aluminium self-cleaning 420 / 51 teeth KX 80 / 85

46,00 €
In stock
AFAM
Rear Sprocket Afam aluminium self-cleaning 52 teeth KTM / Husqvarna
Article no.: 1074735008

Rear Sprocket Afam aluminium self-cleaning 52 teeth KTM / Husqvarna

56,50 €
In stock
AFAM
Rear Sprocket Afam aluminium self-cleaning 428 / 50 teeth RM / YZ 85
Article no.: 1074532004

Rear Sprocket Afam aluminium self-cleaning 428 / 50 teeth RM / YZ 85

48,50 €
In stock
AFAM
Rear Sprocket Afam aluminium 52 teeth KTM / Husqvarna
Article no.: 1074736006

Rear Sprocket Afam aluminium 52 teeth KTM / Husqvarna

47,00 €
In stock
AFAM
Rear Sprocket Afam aluminium self-cleaning 428 / 48 teeth RM / YZ 85
Article no.: 1074533003

Rear Sprocket Afam aluminium self-cleaning 428 / 48 teeth RM / YZ 85

41,00 €
In stock
AFAM
Rear Sprocket Afam aluminium 43 teeth KTM
Article no.: 1074736010

Rear Sprocket Afam aluminium 43 teeth KTM

44,50 €
In stock
AFAM
Rear Sprocket Afam steel 52 teeth Beta RR 125 LC
Article no.: 1074640003

Rear Sprocket Afam steel 52 teeth Beta RR 125 LC

29,50 €
In stock
AFAM
Rear Sprocket Afam steel 42 teeth Yamaha YZ / YZF
Article no.: 1074432006

Rear Sprocket Afam steel 42 teeth Yamaha YZ / YZF

34,50 €
In stock
AFAM
Rear Sprocket Afam steel 63 teeth - 428 Beta RR
Article no.: 1074640004

Rear Sprocket Afam steel 63 teeth - 428 Beta RR

42,50 €
In stock
AFAM
Rear Sprocket Afam steel 50 teeth - 428 Beta RR
Article no.: 1074640002

Rear Sprocket Afam steel 50 teeth - 428 Beta RR

24,50 €
In stock
AFAM
Rear Sprocket Afam steel 49 teeth Yamaha YZ 125 / 250
Article no.: 1074432011

Rear Sprocket Afam steel 49 teeth Yamaha YZ 125 / 250

45,50 €
In stock
AFAM
Rear Sprocket Afam steel 46 teeth - 428 Beta RR
Article no.: 1074640001

Rear Sprocket Afam steel 46 teeth - 428 Beta RR

25,00 €
In stock
AFAM
Rear Sprocket Afam steel 45 teeth Yamaha YZ / YZF
Article no.: 1074432008

Rear Sprocket Afam steel 45 teeth Yamaha YZ / YZF

40,50 €
In stock
AFAM
Rear Sprocket Afam steel 47 teeth XTX 660
Article no.: 1074430003

Rear Sprocket Afam steel 47 teeth XTX 660

43,50 €
In stock
AFAM
Rear Sprocket Afam steel 37 teeth KLX 110
Article no.: 1074482002

Rear Sprocket Afam steel 37 teeth KLX 110

19,50 €
In stock
AFAM
Rear Sprocket Afam steel 46 teeth KLX 110
Article no.: 1074482005

Rear Sprocket Afam steel 46 teeth KLX 110

25,50 €
In stock
AFAM
Front Sprocket Afam self-cleaning 428 / 13 teeth TC / SX 85
Article no.: 1077168003

Front Sprocket Afam self-cleaning 428 / 13 teeth TC / SX 85

13,50 €
In stock
AFAM
Front Sprocket Afam self-cleaning 428 / 14 teeth TC / SX 85
Article no.: 1077168004

Front Sprocket Afam self-cleaning 428 / 14 teeth TC / SX 85

13,50 €
In stock
AFAM
Front Sprocket Afam self-cleaning 428 / 14 teeth YZ 85
Article no.: 1075268001

Front Sprocket Afam self-cleaning 428 / 14 teeth YZ 85

12,50 €
In stock
AFAM
Front Sprocket Afam self-cleaning 13 teeth Honda CR 250 / CRF 450
Article no.: 1074743001

Front Sprocket Afam self-cleaning 13 teeth Honda CR 250 / CRF 450

19,50 €
In stock
AFAM
Front Sprocket Afam self-cleaning 14 teeth Honda CR 250 / CRF 450
Article no.: 1074743002

Front Sprocket Afam self-cleaning 14 teeth Honda CR 250 / CRF 450

20,50 €
In stock
AFAM
Front Sprocket Afam self-cleaning 14 teeth KXF 450
Article no.: 1076576002

Front Sprocket Afam self-cleaning 14 teeth KXF 450

18,50 €
In stock
AFAM
Front Sprocket Afam 420 / 14 teeth KX 65 / 85
Article no.: 1076683003

Front Sprocket Afam 420 / 14 teeth KX 65 / 85

6,20 €
In stock
AFAM
Front Sprocket Afam 15 teeth Kawasaki / Yamaha
Article no.: 1076567004

Front Sprocket Afam 15 teeth Kawasaki / Yamaha

14,50 €
In stock
AFAM
Front Sprocket Afam 420 / 13 teeth SX / TC 65
Article no.: 1077163002

Front Sprocket Afam 420 / 13 teeth SX / TC 65

9,50 €
In stock
AFAM
Front Sprocket Afam 12 teeth KTM / Husqvarna / Beta
Article no.: 1077138002

Front Sprocket Afam 12 teeth KTM / Husqvarna / Beta

14,50 €
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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