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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 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
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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UFO
Swingarm Slider Honda CR 125 / 250 1990-1994 UFO black
Article no.: UF-HO02632#001

Swingarm Slider Honda CR 125 / 250 1990-1994 UFO black

15,00 €
In stock
Sale
UFO
Chain Slider / Swingarm Slider Set GasGas MC / EC 2021-2023 UFO black
Article no.: UF-GG07135@001

Chain Slider / Swingarm Slider Set GasGas MC / EC 2021-2023 UFO black

25,50 €
In stock
Polini
Secondary Gears Polini Z=11-46 Piaggio Ciao / Si
Article no.: P202.1427

Secondary Gears Polini Z=11-46 Piaggio Ciao / Si

104,00 €
In stock
Polini
Secondary Gears Polini Z=10-47 Piaggio Ciao / Si
Article no.: P202.1426

Secondary Gears Polini Z=10-47 Piaggio Ciao / Si

104,00 €
In stock
Polini
Primary Gears Polini Z=11-23 Piaggio Ciao / Si
Article no.: P202.1425

Primary Gears Polini Z=11-23 Piaggio Ciao / Si

73,50 €
In stock
Polini
Wheel Axle Revision Kit Polini Piaggio Zip
Article no.: P202.1422

Wheel Axle Revision Kit Polini Piaggio Zip

18,00 €
In stock
Doppler
Chain Kit Doppler 13x53 - 428 Sherco 50 Alu Neochrome
Article no.: CGN526755

Chain Kit Doppler 13x53 - 428 Sherco 50 Alu Neochrome

94,00 €
In stock
Sale
Doppler
Chain Guide Doppler Rieju MRT Neochrome
Article no.: CGN520883

Chain Guide Doppler Rieju MRT Neochrome

31,00 €
In stock
Sale
Doppler
Chain Guide Doppler Derbi / Aprilia / Gilera Neochrome
Article no.: CGN520884

Chain Guide Doppler Derbi / Aprilia / Gilera Neochrome

34,00 €
In stock
Doppler
Rear Sprocket Doppler 53 teeth - 428 aluminum neochrome Sherco 50
Article no.: CGN517732

Rear Sprocket Doppler 53 teeth - 428 aluminum neochrome Sherco 50

61,00 €
In stock
Sale
Doppler
Rear Sprocket Doppler 53 teeth - 428 aluminum blue Sherco 50
Article no.: CGN517734

Rear Sprocket Doppler 53 teeth - 428 aluminum blue Sherco 50

69,50 €
In stock
Doppler
Rear Sprocket steel 53Z - 420 Doppler Origin Peugeot / Rieju
Article no.: CGN509888

Rear Sprocket steel 53Z - 420 Doppler Origin Peugeot / Rieju

32,50 €
In stock
Polisport
Swingarm Slider Polisport Beta RR after 2020 black
Article no.: POL-8476200001

Swingarm Slider Polisport Beta RR after 2020 black

11,50 €
In stock
RRP
19,73 €
-42% Discount
Standard Parts
Screw M8x35 galvanized 8.8 (x10)
Article no.: SP-10265

Screw M8x35 galvanized 8.8 (x10)

1,90 €
In stock
Standard Parts
Rear Sprocket IGM Rieju SMX "06 62mm 5 hole 50 teeth
Article no.: SP-87870

Rear Sprocket IGM Rieju SMX "06 62mm 5 hole 50 teeth

13,50 €
In stock
AFAM
Chain Master Link clip for motocross chain AFAM A420MX2G
Article no.: AFAMARA420MX2-G

Chain Master Link clip for motocross chain AFAM A420MX2G

3,80 €
In stock
AFAM
Chain motocross AFAM A420MX2G - clip
Article no.: AFAMA420MX2-G

Chain motocross AFAM A420MX2G - clip

from 39,50 €
In stock
50,00 €
-21% Discount
AFAM
Chain Master Link clip for motocross chain AFAM ARS A428MX-G gold
Article no.: AFAMARSA428MX-G

Chain Master Link clip for motocross chain AFAM ARS A428MX-G gold

5,00 €
In stock
Sale
AFAM
Chain motocross AFAM A520MR2G - clip
Article no.: AFAMA520MR2-G

Chain motocross AFAM A520MR2G - clip

from 44,50 €
In stock
46,00 €
-3% Discount
AFAM
Chain motocross AFAM A520XRR3G X-Ring - clip
Article no.: AFAMA520XRR3-G

Chain motocross AFAM A520XRR3G X-Ring - clip

from 97,00 €
In stock
101,00 €
-4% Discount
Standard Parts
Rear Sprocket Premium 66 teeth - 420 black Fantic XM50 /XE50 after 2018
Article no.: IP49519

Rear Sprocket Premium 66 teeth - 420 black Fantic XM50 /XE50 after 2018

46,50 €
In stock
Standard Parts
Rear Sprocket Premium 60 teeth - 420 black Fantic XM50 /XE50 after 2018
Article no.: IP49518

Rear Sprocket Premium 60 teeth - 420 black Fantic XM50 /XE50 after 2018

41,50 €
In stock
Standard Parts
Rear Sprocket Premium 58 teeth - 420 black Fantic XM50 /XE50 after 2018
Article no.: IP49517

Rear Sprocket Premium 58 teeth - 420 black Fantic XM50 /XE50 after 2018

43,00 €
In stock
Standard Parts
Rear Sprocket 53 teeth - 420 Doppler Masai Rider 50
Article no.: CGN517184

Rear Sprocket 53 teeth - 420 Doppler Masai Rider 50

57,00 €
In stock
Standard Parts
Chain reinforced 134 links D.420 Doppler purple
Article no.: CGN517760

Chain reinforced 134 links D.420 Doppler purple

30,50 €
In stock
Standard Parts
Moped Chain 112 links
Article no.: CGN509804

Moped Chain 112 links

8,00 €
In stock
Sale
RFX
Chain Tensioners / Axle Blocks RFX Pro yellow Suzuki RM-Z 250 / 450
Article no.: R-FXAB3010099YL

Chain Tensioners / Axle Blocks RFX Pro yellow Suzuki RM-Z 250 / 450

31,50 €
In stock
RFX
Chain Tensioners / Axle Blocks RFX Pro red Beta RR
Article no.: R-FXAB8010099RD

Chain Tensioners / Axle Blocks RFX Pro red Beta RR

31,50 €
In stock
RFX
Chain Roller RFX Race black 38mm universal
Article no.: R-FXCR1003855BK

Chain Roller RFX Race black 38mm universal

11,00 €
In stock
Sale
RFX
Chain Roller RFX Race black 32mm universal
Article no.: R-FXCR1003255BK

Chain Roller RFX Race black 32mm universal

9,00 €
In stock
Sale
RFX
Chain Tensioners / Axle Blocks RFX Pro orange KTM SX65
Article no.: R-FXAB5040099OR

Chain Tensioners / Axle Blocks RFX Pro orange KTM SX65

32,00 €
In stock
RFX
Chain Tensioners / Axle Blocks RFX Pro orange KTM
Article no.: R-FXAB5030099OR

Chain Tensioners / Axle Blocks RFX Pro orange KTM

33,00 €
In stock
Standard Parts
Pulley aluminium 11 teeth black moped
Article no.: CGN517366

Pulley aluminium 11 teeth black moped

36,00 €
In stock
Standard Parts
Chain type 25H 136 links Pocket Bike Pista
Article no.: SP-23358

Chain type 25H 136 links Pocket Bike Pista

7,30 €
In stock
Standard Parts
Spacer idle gear 24x35x1,0mm gearbox Simson
Article no.: MOF-41496

Spacer idle gear 24x35x1,0mm gearbox Simson

1,20 €
In stock
RMS
Freewheel Sprocket 18 teeth Piaggio Ciao
Article no.: R525260140

Freewheel Sprocket 18 teeth Piaggio Ciao

4,50 €
In stock
RMS
Freewheel Sprocket 16 teeth Piaggio Ciao
Article no.: R525260120

Freewheel Sprocket 16 teeth Piaggio Ciao

4,80 €
In stock
Standard Parts
Steering Lock with 2 keys Puch
Article no.: IP44179

Steering Lock with 2 keys Puch

9,50 €
In stock
Standard Parts
Chain Guide / Frame Guard Puch Maxi N
Article no.: IP44214

Chain Guide / Frame Guard Puch Maxi N

11,00 €
In stock
Standard Parts
Chain Guide / Frame Guard Puch Maxi S
Article no.: IP44151

Chain Guide / Frame Guard Puch Maxi S

7,70 €
In stock
Standard Parts
Rear Sprocket Premium 45 teeth Puch Maxi (cast wheel)
Article no.: IP43680

Rear Sprocket Premium 45 teeth Puch Maxi (cast wheel)

35,50 €
In stock
Standard Parts
Pedal Chain 112 links 1/2 "x1/8" Type 410 moped
Article no.: IP44150

Pedal Chain 112 links 1/2 "x1/8" Type 410 moped

6,00 €
In stock
Sale
Voca Racing
Gearbox Voca Racing Derbi
Article no.: VCR-RD77193.CC

Gearbox Voca Racing Derbi

517,00 €
In stock
RRP
570,00 €
-9% Discount
Voca Racing
Gearbox Voca Racing Minarelli AM6
Article no.: VCR-RD77188.CC

Gearbox Voca Racing Minarelli AM6

475,00 €
In stock
RRP
534,00 €
-11% Discount
Avoc
Chain Tensioners (x2) Avoc Orange KTM Duke 125
Article no.: AVOC-181854

Chain Tensioners (x2) Avoc Orange KTM Duke 125

19,00 €
In stock
Doppler
Rear Sprocket 53 teeth - 420 Doppler aluminium CNC red Fantic Caballero before 2015
Article no.: CGN515220

Rear Sprocket 53 teeth - 420 Doppler aluminium CNC red Fantic Caballero before 2015

47,00 €
In stock
Sale
Standard Parts
Chain Tensioner M7x1.00 - L.35mm MBK 51 (x1)
Article no.: CGN517091

Chain Tensioner M7x1.00 - L.35mm MBK 51 (x1)

3,80 €
In stock
KRM
Ceramic Ball for clutch rod KRM Minarelli AM6
Article no.: KR540F

Ceramic Ball for clutch rod KRM Minarelli AM6

5,00 €
In stock
Sale
Pro Circuit
Chain Tensioners / Axle Blocks Pro Circuit red CR / CRF 2000-2008
Article no.: PC-HAB00

Chain Tensioners / Axle Blocks Pro Circuit red CR / CRF 2000-2008

77,00 €
In stock
Derbi
Chain Tensioner Plate (x1) Derbi DRD Racing
Article no.: OE-DE00H01301471

Chain Tensioner Plate (x1) Derbi DRD Racing

20,00 €
In stock
Sale
Algi
Rear Sprocket Screw M6x1.00 - L.20mm Peugeot 103 (alloy wheels)
Article no.: EKP-17129

Rear Sprocket Screw M6x1.00 - L.20mm Peugeot 103 (alloy wheels)

1,10 €
In stock
Doppler
Rear Sprocket 68 teeth Doppler aluminium CNC black MBK 51 / Peugeot 103
Article no.: CGN513527

Rear Sprocket 68 teeth Doppler aluminium CNC black MBK 51 / Peugeot 103

52,00 €
In stock
Conti
Rear Sprocket bi-metal red 53 teeth - 420 Conti CHR Aprilia SX 50
Article no.: CGN513622

Rear Sprocket bi-metal red 53 teeth - 420 Conti CHR Aprilia SX 50

71,00 €
In stock
Conti
Rear Sprocket bimetal red 53 teeth - 428 Conti CHR Beta RR
Article no.: CGN513620

Rear Sprocket bimetal red 53 teeth - 428 Conti CHR Beta RR

37,00 €
In stock
Sale
Standard Parts
Chain Kit Afam 12x58 - 420 Fantic Caballero 2006 - 2017
Article no.: CGN509298

Chain Kit Afam 12x58 - 420 Fantic Caballero 2006 - 2017

66,00 €
In stock
Standard Parts
Rear Sprocket steel 52 teeth - 420 CPI SX / SM
Article no.: MF89.00371

Rear Sprocket steel 52 teeth - 420 CPI SX / SM

25,00 €
In stock
Doppler
Rear Sprocket steel 53 teeth - 420 Doppler Derbi DRD Pro
Article no.: CGN509884

Rear Sprocket steel 53 teeth - 420 Doppler Derbi DRD Pro

28,00 €
In stock
Sale
Doppler
Rear Sprocket steel 53 teeth - 428 Doppler Origin Beta RR
Article no.: CGN509882

Rear Sprocket steel 53 teeth - 428 Doppler Origin Beta RR

31,00 €
In stock
Sale
Top Performances
Primary Gears 15/50 Top Performances Yamaha Aerox / BW's
Article no.: T9913300
1

Primary Gears 15/50 Top Performances Yamaha Aerox / BW's

67,00 €
In stock
Sale
Moto Master
Bolts f. rear sprocket Moto Master M8x26 (x6)
Article no.: MMAST-24011074

Bolts f. rear sprocket Moto Master M8x26 (x6)

10,00 €
In stock
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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