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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
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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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AFAM
Front Sprocket AFAM 11 teeth 428 Minarelli AM6
Article no.: AFAM94121-11

Front Sprocket AFAM 11 teeth 428 Minarelli AM6

7,70 €
In stock
AFAM
Chain Kit AFAM extra reinforced 17x39 Honda NC750 Integra
Article no.: AFAMKS-A-20

Chain Kit AFAM extra reinforced 17x39 Honda NC750 Integra

111,00 €
In stock
113,00 €
-2% Discount
AFAM
Chain Kit AFAM extra reinforced 16x40 KTM Duke 690 / 690 R / 790
Article no.: AFAMKS-A-158

Chain Kit AFAM extra reinforced 16x40 KTM Duke 690 / 690 R / 790

46,50 €
In stock
RRP
108,00 €
-57% Discount
AFAM
Chain Kit AFAM 17x40 Aprilia RS125 1999 - 2005 / RS 125 Tuono
Article no.: AFAMKS-A-192

Chain Kit AFAM 17x40 Aprilia RS125 1999 - 2005 / RS 125 Tuono

97,50 €
In stock
AFAM
Chain Kit AFAM 16x45 Aprilia ETX 125
Article no.: AFAMKS-A-177

Chain Kit AFAM 16x45 Aprilia ETX 125

41,50 €
In stock
RRP
98,00 €
-58% Discount
AFAM
Chain Kit AFAM 16x40 Aprilia RS125 before 1998
Article no.: AFAMKS-A-181

Chain Kit AFAM 16x40 Aprilia RS125 before 1998

44,00 €
In stock
RRP
90,50 €
-51% Discount
AFAM
Chain Kit AFAM 15x39 SYM XS 125 K
Article no.: AFAMKS-A-7

Chain Kit AFAM 15x39 SYM XS 125 K

40,00 €
In stock
AFAM
Chain Kit AFAM 15x38 Aprilia AF1 125 Futura / Sport / Europa
Article no.: AFAMKS-A-176

Chain Kit AFAM 15x38 Aprilia AF1 125 Futura / Sport / Europa

36,00 €
In stock
RRP
98,00 €
-63% Discount
AFAM
Chain Kit AFAM 15x34 SYM Track Runner 200
Article no.: AFAMKS-A-1

Chain Kit AFAM 15x34 SYM Track Runner 200

29,00 €
In stock
RRP
77,50 €
-63% Discount
AFAM
Chain Kit AFAM 14x63 Beta RR 125 LC Motard / Enduro
Article no.: AFAMKS-A-39

Chain Kit AFAM 14x63 Beta RR 125 LC Motard / Enduro

59,00 €
In stock
60,00 €
-2% Discount
AFAM
Chain Kit AFAM 14x62 HM-Moto CRE 125 Baja after 2011
Article no.: AFAMKS-A-43

Chain Kit AFAM 14x62 HM-Moto CRE 125 Baja after 2011

90,00 €
In stock
AFAM
Chain Kit AFAM 14x54 Motorhispania KN1 125 / KN2 125
Article no.: AFAMKS-A-45

Chain Kit AFAM 14x54 Motorhispania KN1 125 / KN2 125

43,50 €
In stock
RRP
93,50 €
-53% Discount
AFAM
Chain Kit AFAM 14x53 Aprilia RS / Derbi GPR
Article no.: AFAMKS-A-169

Chain Kit AFAM 14x53 Aprilia RS / Derbi GPR

46,00 €
In stock
AFAM
Chain Kit AFAM 14x45 KTM Duke 125 after 2014
Article no.: AFAMKS-A-152

Chain Kit AFAM 14x45 KTM Duke 125 after 2014

102,00 €
In stock
AFAM
Chain Kit AFAM 14x36 Kymco K-Pipe
Article no.: AFAMKS-A-3

Chain Kit AFAM 14x36 Kymco K-Pipe

38,50 €
In stock
AFAM
Chain Kit AFAM 14x35 Yamaha TT-R 110
Article no.: AFAMKS-A-67

Chain Kit AFAM 14x35 Yamaha TT-R 110

30,00 €
In stock
AFAM
Chain Kit AFAM 14x30 Kymco Mxer 150 / MXU 150
Article no.: AFAMKS-A-89

Chain Kit AFAM 14x30 Kymco Mxer 150 / MXU 150

69,00 €
In stock
AFAM
Chain Kit AFAM 13x62 Aprilia SX125
Article no.: AFAMKS-A-190

Chain Kit AFAM 13x62 Aprilia SX125

66,00 €
In stock
AFAM
Chain Kit AFAM 13x38 Honda TRX 300 EX before 2008
Article no.: AFAMKS-A-15

Chain Kit AFAM 13x38 Honda TRX 300 EX before 2008

73,00 €
In stock
AFAM
Chain Kit AFAM 13x37 Yamaha TT-R 50
Article no.: AFAMKS-A-65

Chain Kit AFAM 13x37 Yamaha TT-R 50

10,50 €
In stock
RRP
27,50 €
-62% Discount
AFAM
Chain Kit AFAM 12x48 Yamaha DT before 1992
Article no.: AFAMKS-A-62

Chain Kit AFAM 12x48 Yamaha DT before 1992

43,00 €
In stock
AFAM
Chain Kit AFAM 12x47 Aprilia RS 50 1999 - 2005
Article no.: AFAMKS-A-137

Chain Kit AFAM 12x47 Aprilia RS 50 1999 - 2005

46,50 €
In stock
AFAM
Chain Kit AFAM 12x32 Yamaha Breeze / Grizzly
Article no.: AFAMKS-A-68

Chain Kit AFAM 12x32 Yamaha Breeze / Grizzly

25,00 €
In stock
RRP
64,50 €
-61% Discount
AFAM
Chain Kit AFAM 11x62 Yamaha DT / Peugeot XP6
Article no.: AFAMKS-A-125

Chain Kit AFAM 11x62 Yamaha DT / Peugeot XP6

52,50 €
In stock
AFAM
Chain Kit AFAM 11x60 Peugeot XP6
Article no.: AFAMKS-A-134

Chain Kit AFAM 11x60 Peugeot XP6

52,50 €
In stock
53,50 €
-2% Discount
AFAM
Chain Kit AFAM 11x53 Gilera RCR 50
Article no.: AFAMKS-A-74

Chain Kit AFAM 11x53 Gilera RCR 50

44,50 €
In stock
AFAM
Chain Kit AFAM 11x53 Generic / Keeway
Article no.: AFAMKS-A-111

Chain Kit AFAM 11x53 Generic / Keeway

47,00 €
In stock
AFAM
Chain Kit AFAM 11x52 Rieju Spike
Article no.: AFAMKS-A-129

Chain Kit AFAM 11x52 Rieju Spike

45,50 €
In stock
AFAM
Chain Kit AFAM 11x48 Rieju RR
Article no.: AFAMKS-A-126

Chain Kit AFAM 11x48 Rieju RR

45,00 €
In stock
AFAM
Chain Kit AFAM 11x46 Aprilia Classic
Article no.: AFAMKS-A-95

Chain Kit AFAM 11x46 Aprilia Classic

19,50 €
In stock
RRP
51,00 €
-62% Discount
AFAM
Rear Sprocket steel 62 teeth - 428 Afam Rieju MRT
Article no.: AFAM47200-62

Rear Sprocket steel 62 teeth - 428 Afam Rieju MRT

35,00 €
In stock
AFAM
Rear Sprocket steel 62 teeth - 420 AFAM CPI SX / Rieju SMX
Article no.: AFAM116100-62

Rear Sprocket steel 62 teeth - 420 AFAM CPI SX / Rieju SMX

33,00 €
In stock
34,50 €
-4% Discount
Sale
AFAM
Rear Sprocket steel 60 teeth - 428 Afam Aprilia SX 50
Article no.: AFAM92220-60

Rear Sprocket steel 60 teeth - 428 Afam Aprilia SX 50

30,50 €
In stock
AFAM
Rear Sprocket steel 58 teeth - 420 AFAM Beta RR (02 - 05) / Caballero
Article no.: AFAM92115-58

Rear Sprocket steel 58 teeth - 420 AFAM Beta RR (02 - 05) / Caballero

32,00 €
In stock
AFAM
Rear Sprocket steel 53 teeth - 420 Afam Derbi Senda
Article no.: AFAM92114-53

Rear Sprocket steel 53 teeth - 420 Afam Derbi Senda

21,50 €
In stock
AFAM
Rear Sprocket steel 53 teeth - 420 Afam Rieju MRT
Article no.: AFAM47103-53

Rear Sprocket steel 53 teeth - 420 Afam Rieju MRT

20,50 €
In stock
AFAM
Rear Sprocket steel 52 teeth - 420 Afam Peugeot / Rieju
Article no.: AFAM92122-52

Rear Sprocket steel 52 teeth - 420 Afam Peugeot / Rieju

29,00 €
In stock
AFAM
Rear Sprocket steel 52 teeth - 420 Afam Rieju MRT
Article no.: AFAM47103-52

Rear Sprocket steel 52 teeth - 420 Afam Rieju MRT

21,00 €
In stock
AFAM
Rear Sprocket steel 51 teeth - 420 AFAM Beta RR
Article no.: AFAM38101-51

Rear Sprocket steel 51 teeth - 420 AFAM Beta RR

21,50 €
In stock
AFAM
Rear Sprocket steel 50 teeth - 428 Afam Rieju MRT
Article no.: AFAM47200-50

Rear Sprocket steel 50 teeth - 428 Afam Rieju MRT

25,50 €
In stock
AFAM
Rear Sprocket steel 50 teeth - 420 AFAM Beta RR (02 - 05) / Caballero
Article no.: AFAM92115-50

Rear Sprocket steel 50 teeth - 420 AFAM Beta RR (02 - 05) / Caballero

24,50 €
In stock
AFAM
Rear Sprocket steel 49 teeth - 428 Afam Yamaha TZR
Article no.: AFAM12202-49

Rear Sprocket steel 49 teeth - 428 Afam Yamaha TZR

26,50 €
In stock
AFAM
Rear Sprocket steel 48 teeth - 428 AFAM Yamaha MT 125 / YS 125 / YZF-R 125
Article no.: AFAM12227-48

Rear Sprocket steel 48 teeth - 428 AFAM Yamaha MT 125 / YS 125 / YZF-R 125

23,00 €
In stock
AFAM
Rear Sprocket steel 48 teeth - 428 Afam Rieju MRT
Article no.: AFAM47200-48

Rear Sprocket steel 48 teeth - 428 Afam Rieju MRT

22,50 €
In stock
AFAM
Rear Sprocket steel 48 teeth - 420 AFAM Malaguti NKD
Article no.: AFAM146100-48

Rear Sprocket steel 48 teeth - 420 AFAM Malaguti NKD

21,50 €
In stock
AFAM
Rear Sprocket steel 48 teeth - 420 Afam Rieju MRT
Article no.: AFAM47103-48

Rear Sprocket steel 48 teeth - 420 Afam Rieju MRT

18,00 €
In stock
AFAM
Rear Sprocket steel 47 teeth - 428 AFAM Daelim / Honda / Kymco / Mash
Article no.: AFAM10223-47

Rear Sprocket steel 47 teeth - 428 AFAM Daelim / Honda / Kymco / Mash

7,00 €
In stock
RRP
19,00 €
-63% Discount
AFAM
Rear Sprocket steel 47 teeth - 420 Afam Yamaha TZR 2000-2002
Article no.: AFAM12113-47

Rear Sprocket steel 47 teeth - 420 Afam Yamaha TZR 2000-2002

9,10 €
In stock
RRP
21,00 €
-57% Discount
AFAM
Rear Sprocket steel 47 teeth - 420 AFAM Rieju RS2
Article no.: AFAM80104-47

Rear Sprocket steel 47 teeth - 420 AFAM Rieju RS2

22,00 €
In stock
AFAM
Rear Sprocket steel 47 teeth - 420 AFAM Aprilia RS
Article no.: AFAM35104-47

Rear Sprocket steel 47 teeth - 420 AFAM Aprilia RS

25,00 €
In stock
AFAM
Rear Sprocket steel 45 teeth - 520 AFAM Honda CA / CM / VT / XL 125 / KTM Duke 125 / 200
Article no.: AFAM10221-45

Rear Sprocket steel 45 teeth - 520 AFAM Honda CA / CM / VT / XL 125 / KTM Duke 125 / 200

28,50 €
In stock
30,00 €
-5% Discount
AFAM
Rear Sprocket steel 40 teeth - 520 AFAM Aprilia RS 125
Article no.: AFAM35801-40

Rear Sprocket steel 40 teeth - 520 AFAM Aprilia RS 125

9,80 €
In stock
RRP
25,50 €
-62% Discount
AFAM
Rear Sprocket steel 39 teeth - 428 AFAM Kymco Pulsar
Article no.: AFAM10201-39

Rear Sprocket steel 39 teeth - 428 AFAM Kymco Pulsar

20,00 €
In stock
AFAM
Rear Sprocket steel 38 teeth - 525 AFAM KTM 1290 Super Duke
Article no.: AFAM71900-38

Rear Sprocket steel 38 teeth - 525 AFAM KTM 1290 Super Duke

12,00 €
In stock
RRP
24,50 €
-51% Discount
AFAM
Rear Sprocket steel 38 teeth - 520 AFAM Kymco Maxxer
Article no.: AFAM74300-38

Rear Sprocket steel 38 teeth - 520 AFAM Kymco Maxxer

23,50 €
In stock
AFAM
Rear Sprocket steel 38 teeth - 428 AFAM Kymco Pulsar
Article no.: AFAM10201-38

Rear Sprocket steel 38 teeth - 428 AFAM Kymco Pulsar

16,50 €
In stock
AFAM
Rear Sprocket steel 32 teeth - 520 AFAM Yamaha YFA1 / YFM
Article no.: AFAM12214-32

Rear Sprocket steel 32 teeth - 520 AFAM Yamaha YFA1 / YFM

7,00 €
In stock
RRP
18,50 €
-62% Discount
AFAM
Rear Sprocket steel 30 teeth - 520 AFAM Kymco Maxxer
Article no.: AFAM74100-30

Rear Sprocket steel 30 teeth - 520 AFAM Kymco Maxxer

6,70 €
In stock
RRP
18,00 €
-63% Discount
AFAM
Chain AFAM XS-Ring reinforced gold 428 XMR-G 146 links
Article no.: AFAM428XMR-G-146

Chain AFAM XS-Ring reinforced gold 428 XMR-G 146 links

71,00 €
In stock
73,50 €
-3% Discount
AFAM
Chain AFAM reinforced gold 520 MR1 88 links
Article no.: AFAM520MR1-G-88

Chain AFAM reinforced gold 520 MR1 88 links

30,00 €
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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