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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 Engine cover 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
Chain Kit Afam 520 MR2 CR 250 13/49 original 1994-1996
Article no.: 48010911

Chain Kit Afam 520 MR2 CR 250 13/49 original 1994-1996

107,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 CR 250 14/53
Article no.: 48010909

Chain Kit Afam 520 MR2 CR 250 14/53

101,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 CR 250 13/49 original 1990-1993
Article no.: 48010895

Chain Kit Afam 520 MR2 CR 250 13/49 original 1990-1993

106,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 415F KTM 50 SX 10/40
Article no.: 48010551

Chain Kit Afam 415F KTM 50 SX 10/40

79,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 420 MX SX Pro Senior LC 50 11/44 self-cleaning rear sprocket
Article no.: 48010547

Chain Kit Afam 420 MX SX Pro Senior LC 50 11/44 self-cleaning rear sprocket

79,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 428 MX CR 85 15/49
Article no.: 48010409

Chain Kit Afam 428 MX CR 85 15/49

104,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 CR 250 13/50
Article no.: 48010399

Chain Kit Afam 520 MR2 CR 250 13/50

126,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 CR 250 13/48
Article no.: 48010398

Chain Kit Afam 520 MR2 CR 250 13/48

124,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 CR 125 13/51 original 1998-1999
Article no.: 48010396

Chain Kit Afam 520 MR2 CR 125 13/51 original 1998-1999

129,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 CR 125 12/49
Article no.: 48010395

Chain Kit Afam 520 MR2 CR 125 12/49

124,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 CR 125 13/52 original 2005-2007
Article no.: 48010393

Chain Kit Afam 520 MR2 CR 125 13/52 original 2005-2007

132,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 CR 125 13/52 original 2003
Article no.: 48010389

Chain Kit Afam 520 MR2 CR 125 13/52 original 2003

132,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 CR 125 13/51 original 2002
Article no.: 48010387

Chain Kit Afam 520 MR2 CR 125 13/51 original 2002

129,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 KX 125 13/50 original 1996-1997
Article no.: 48010326

Chain Kit Afam 520 MR2 KX 125 13/50 original 1996-1997

105,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 KX 250 14/49 original 1994-1996
Article no.: 48010294

Chain Kit Afam 520 MR2 KX 250 14/49 original 1994-1996

125,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 KX 125 13/50 original 2004-2008
Article no.: 48010272

Chain Kit Afam 520 MR2 KX 125 13/50 original 2004-2008

124,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 KX 125 12/49
Article no.: 48010259

Chain Kit Afam 520 MR2 KX 125 12/49

104,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 KX 250 14 / 49
Article no.: 48010258

Chain Kit Afam 520 MR2 KX 250 14 / 49

129,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 420 MX 65 TC / SX 14 / 48
Article no.: 48010249

Chain Kit Afam 420 MX 65 TC / SX 14 / 48

89,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 KX 125 12 / 49
Article no.: 48010235

Chain Kit Afam 520 MR2 KX 125 12 / 49

122,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 KX 250 13 / 49
Article no.: 48010228

Chain Kit Afam 520 MR2 KX 250 13 / 49

124,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 RM 125 12 / 50
Article no.: 48010225

Chain Kit Afam 520 MR2 RM 125 12 / 50

125,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 428 MX RM 85 13 / 47
Article no.: 48010219

Chain Kit Afam 428 MX RM 85 13 / 47

118,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 RM 250 13 / 49
Article no.: 48010215

Chain Kit Afam 520 MR2 RM 250 13 / 49

127,00 €
Ready for dispatch shortly
AFAM
Chain Kit Afam 520 MR2 RM 125 12 / 51
Article no.: 48010214

Chain Kit Afam 520 MR2 RM 125 12 / 51

129,00 €
Ready for dispatch shortly
AFAM
Front Sprocket Afam steel 13 teeth Honda CR 125 / CRF 250
Article no.: 1074806001

Front Sprocket Afam steel 13 teeth Honda CR 125 / CRF 250

24,00 €
Ready for dispatch shortly
AFAM
Front Sprocket Afam steel 13 teeth CRF 250
Article no.: 1074817001

Front Sprocket Afam steel 13 teeth CRF 250

18,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam 415 aluminium 40 teeth SX / TC 50
Article no.: 1074731001

Rear Sprocket Afam 415 aluminium 40 teeth SX / TC 50

30,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam aluminium 48 teeth KTM Freeride
Article no.: 1074737002

Rear Sprocket Afam aluminium 48 teeth KTM Freeride

52,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam aluminium 46 teeth KTM Freeride
Article no.: 1074737001

Rear Sprocket Afam aluminium 46 teeth KTM Freeride

50,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 49 teeth Suzuki RM-Z 250 / 450
Article no.: 1074493003

Rear Sprocket Afam steel self-cleaning 49 teeth Suzuki RM-Z 250 / 450

48,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 51 teeth Kawasaki KX / KXF
Article no.: 1074558004

Rear Sprocket Afam steel self-cleaning 51 teeth Kawasaki KX / KXF

51,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 51 teeth Honda CR / CRF / XR
Article no.: 1074330004

Rear Sprocket Afam steel self-cleaning 51 teeth Honda CR / CRF / XR

51,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 52 teeth Honda CR / CRF / XR
Article no.: 1074330005

Rear Sprocket Afam steel self-cleaning 52 teeth Honda CR / CRF / XR

52,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 48 teeth Yamaha YZ / YZF
Article no.: 1074433002

Rear Sprocket Afam steel self-cleaning 48 teeth Yamaha YZ / YZF

48,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 48 teeth Honda CR / CRF / XR
Article no.: 1074330001

Rear Sprocket Afam steel self-cleaning 48 teeth Honda CR / CRF / XR

48,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 50 teeth Beta / Sherco
Article no.: 1074496003

Rear Sprocket Afam steel self-cleaning 50 teeth Beta / Sherco

48,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 51 teeth KTM / Husqvarna
Article no.: 1074718004

Rear Sprocket Afam steel self-cleaning 51 teeth KTM / Husqvarna

51,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 50 teeth Honda CR / CRF / XR
Article no.: 1074330003

Rear Sprocket Afam steel self-cleaning 50 teeth Honda CR / CRF / XR

48,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 49 teeth Beta / Sherco
Article no.: 1074496002

Rear Sprocket Afam steel self-cleaning 49 teeth Beta / Sherco

48,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 47 teeth Yamaha YZ / YZF
Article no.: 1074433001

Rear Sprocket Afam steel self-cleaning 47 teeth Yamaha YZ / YZF

48,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 49 teeth Honda CR / CRF / XR
Article no.: 1074330002

Rear Sprocket Afam steel self-cleaning 49 teeth Honda CR / CRF / XR

48,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 48 teeth Suzuki RM-Z 250 / 450
Article no.: 1074493002

Rear Sprocket Afam steel self-cleaning 48 teeth Suzuki RM-Z 250 / 450

48,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 49 teeth Kawasaki KX / KXF
Article no.: 1074558002

Rear Sprocket Afam steel self-cleaning 49 teeth Kawasaki KX / KXF

48,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 49 teeth Yamaha YZ / YZF
Article no.: 1074433003

Rear Sprocket Afam steel self-cleaning 49 teeth Yamaha YZ / YZF

48,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 50 teeth Kawasaki KX / KXF
Article no.: 1074558003

Rear Sprocket Afam steel self-cleaning 50 teeth Kawasaki KX / KXF

48,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 50 teeth Suzuki RM-Z 250 / 450
Article no.: 1074493004

Rear Sprocket Afam steel self-cleaning 50 teeth Suzuki RM-Z 250 / 450

48,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 47 teeth Suzuki RM-Z 250 / 450
Article no.: 1074493001

Rear Sprocket Afam steel self-cleaning 47 teeth Suzuki RM-Z 250 / 450

48,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 48 teeth KTM / Husqvarna
Article no.: 1074718001

Rear Sprocket Afam steel self-cleaning 48 teeth KTM / Husqvarna

48,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 52 teeth KTM / Husqvarna
Article no.: 1074718005

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

52,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 48 teeth Beta / Sherco
Article no.: 1074496001

Rear Sprocket Afam steel self-cleaning 48 teeth Beta / Sherco

48,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam steel self-cleaning 49 teeth KTM / Husqvarna
Article no.: 1074718002

Rear Sprocket Afam steel self-cleaning 49 teeth KTM / Husqvarna

48,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam aluminium self-cleaning 420 / 50 teeth KX 80 / 85
Article no.: 1074595002

Rear Sprocket Afam aluminium self-cleaning 420 / 50 teeth KX 80 / 85

43,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam aluminium self-cleaning 52 teeth Yamaha YZ / YZF
Article no.: 1074470007

Rear Sprocket Afam aluminium self-cleaning 52 teeth Yamaha YZ / YZF

56,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam aluminium 44 teeth Honda CR / CRF / XR
Article no.: 1074390008

Rear Sprocket Afam aluminium 44 teeth Honda CR / CRF / XR

44,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam aluminium 49 teeth Honda CR / CRF / XR
Article no.: 1074390013

Rear Sprocket Afam aluminium 49 teeth Honda CR / CRF / XR

45,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam aluminium 53 teeth GasGas / Husqvarna
Article no.: 1074539004

Rear Sprocket Afam aluminium 53 teeth GasGas / Husqvarna

51,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam aluminium 46 teeth Honda CR / CRF / XR
Article no.: 1074390010

Rear Sprocket Afam aluminium 46 teeth Honda CR / CRF / XR

45,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam aluminium 51 teeth GasGas / Husqvarna
Article no.: 1074539002

Rear Sprocket Afam aluminium 51 teeth GasGas / Husqvarna

46,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket Afam aluminium 428 / 51 teeth TC / SX 85
Article no.: 1074726006

Rear Sprocket Afam aluminium 428 / 51 teeth TC / SX 85

50,50 €
Ready for dispatch shortly
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51

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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