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Crankshaft

(198 products)
Scooter Crankshafts Bearings and Oil Seals Small End Bearings Crankshaft Accessories
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Product type
Bearing & gasket tools Bearing open Connecting rod kit Crankcase Crankshaft Crankshaft accessories Crankshaft bearing kit Needle bearing Oil seal Oil seal kit Woodruff key O-ring
Brand
2Fast Airsal Athena Bidalot Doppler Jasil Malossi MotoForce MotoForce Racing Naraku Ottopuntouno Peugeot Piaggio Polini RMS SKF Stage6 Stage6 R/T Standard Parts Top Performances Yamaha
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Naraku
Crankshaft Bearings + Seals Kymco Dink / Grand Dink / People / Super 9 / Top Boy / Yup
Article no.: NK100.33

Crankshaft Bearings + Seals Kymco Dink / Grand Dink / People / Super 9 / Top Boy / Yup

37,50 €
In stock
Naraku
Crankshaft bearings and oil seals, Kymco Fever / Meteorit
Article no.: NK100.32

Crankshaft bearings and oil seals, Kymco Fever / Meteorit

32,50 €
In stock
Yamaha
Woodruff Key Yamaha Aerox / BW's
Article no.: OE-MAL90280-03017

Woodruff Key Yamaha Aerox / BW's

6,70 €
In stock
Piaggio
Ignition Woodruff Key Piaggio NRG / Typhoon
Article no.: OE-PIA000267

Ignition Woodruff Key Piaggio NRG / Typhoon

2,90 €
In stock
Bidalot
Small End Bearing Bidalot 13x17x17.5mm
Article no.: BID81200305

Small End Bearing Bidalot 13x17x17.5mm

15,00 €
In stock
Sale
Polini
Crankshaft Bearings Polini + Oil Seals Yamaha Aerox / BW's
Article no.: P282.0002

Crankshaft Bearings Polini + Oil Seals Yamaha Aerox / BW's

31,00 €
In stock
Polini
Crankshaft Bearing Set Polini Piaggio / Gilera / Aprilia / Vespa
Article no.: P282.0001
2

Crankshaft Bearing Set Polini Piaggio / Gilera / Aprilia / Vespa

39,00 €
In stock
RRP
41,00 €
-5% Discount
Polini
Crankshaft Oil Seals Polini Evolution Viton® Piaggio
Article no.: P285.0001

Crankshaft Oil Seals Polini Evolution Viton® Piaggio

17,00 €
In stock
RRP
18,00 €
-6% Discount
Polini
Crankshaft Oil Seals Polini Evolution Viton® Minarelli
Article no.: P285.0002

Crankshaft Oil Seals Polini Evolution Viton® Minarelli

20,00 €
In stock
Polini
Small End Bearing Polini 14x17x17mm
Article no.: P280.0077

Small End Bearing Polini 14x17x17mm

29,00 €
In stock
RRP
34,00 €
-15% Discount
SKF
Needle Bearing SKF HK1010 10x14x10mm AM6
Article no.: SP-215224

Needle Bearing SKF HK1010 10x14x10mm AM6

4,90 €
In stock
SKF
Needle Bearing SKF HK1210 12x16x10mm gear selector shaft AM6
Article no.: SP-215223

Needle Bearing SKF HK1210 12x16x10mm gear selector shaft AM6

5,00 €
In stock
Naraku
Crankshaft Bearings HD + Seals FKM Naraku Kymco / SYM vertical
Article no.: NK104.33

Crankshaft Bearings HD + Seals FKM Naraku Kymco / SYM vertical

46,00 €
In stock
Sale
Naraku
Crankshaft Bearings HD + Seals Naraku Kymco / SYM horizontal
Article no.: NK104.26

Crankshaft Bearings HD + Seals Naraku Kymco / SYM horizontal

54,00 €
In stock
Naraku
Crankshaft Bearings HD and Oil Seals FKM Naraku Honda X8R
Article no.: NK104.11

Crankshaft Bearings HD and Oil Seals FKM Naraku Honda X8R

47,00 €
In stock
48,00 €
-2% Discount
Naraku
Oil Seal Naraku FKM Premium 24x43x6mm
Article no.: NK103.96

Oil Seal Naraku FKM Premium 24x43x6mm

4,80 €
In stock
Naraku
Oil Seal Naraku FKM Premium 22x38x6mm
Article no.: NK103.91

Oil Seal Naraku FKM Premium 22x38x6mm

5,40 €
In stock
Naraku
Oil Seal Naraku FKM Premium 17x30x6mm
Article no.: NK103.47

Oil Seal Naraku FKM Premium 17x30x6mm

5,40 €
In stock
Polini
Small End Bearing Polini P.R.E. 2 Piaggio Zip SP LC
Article no.: P280.0060

Small End Bearing Polini P.R.E. 2 Piaggio Zip SP LC

12,00 €
In stock
RRP
14,00 €
-14% Discount
Top Performances
Woodruff Key Top Performances Piaggio / Suzuki
Article no.: T9909940

Woodruff Key Top Performances Piaggio / Suzuki

7,20 €
In stock
Standard Parts
Oil seals crankshaft PGO Big Max
Article no.: MF96.00038

Oil seals crankshaft PGO Big Max

6,20 €
In stock
SKF
Bearing SKF 6203 C3 TN9 17x40x12mm polymer cage
Article no.: SKF6203TN9/C3

Bearing SKF 6203 C3 TN9 17x40x12mm polymer cage

9,30 €
In stock
Piaggio
Small End Bearing 12x17x13 Piaggio
Article no.: OE-PIA500501

Small End Bearing 12x17x13 Piaggio

9,20 €
In stock
Peugeot
Woodruff Key 3x2,5x13mm Peugeot horizontal
Article no.: OE-PEU771874

Woodruff Key 3x2,5x13mm Peugeot horizontal

3,30 €
In stock
3,80 €
-13% Discount
Peugeot
Small End Bearing 12x16x16mm Peugeot horizontal
Article no.: OE-PEU747120

Small End Bearing 12x16x16mm Peugeot horizontal

14,00 €
In stock
Sale
Yamaha
Small End Bearing 10x14x13mm Minarelli
Article no.: OE-MIN93310210X400

Small End Bearing 10x14x13mm Minarelli

28,50 €
In stock
Malossi
Crankshaft Malossi MHR RHQ 44mm stroke / 90mm conrod Minarelli horizontal
Article no.: M5317827

Crankshaft Malossi MHR RHQ 44mm stroke / 90mm conrod Minarelli horizontal

559,00 €
In stock
RRP
676,00 €
-17% Discount
Malossi
Crankshaft Malossi MHR Team Replica 85mm conrod Piaggio
Article no.: M539212

Crankshaft Malossi MHR Team Replica 85mm conrod Piaggio

349,00 €
In stock
RRP
393,00 €
-11% Discount
Malossi
Crankshaft Malossi MHR RHQ Suzuki Katana AC before 1999
Article no.: M539592

Crankshaft Malossi MHR RHQ Suzuki Katana AC before 1999

283,00 €
In stock
RRP
318,00 €
-11% Discount
Malossi
Crankshaft Malossi MHR RHQ Italjet Formula / Suzuki AP
Article no.: M538631

Crankshaft Malossi MHR RHQ Italjet Formula / Suzuki AP

314,00 €
In stock
RRP
354,00 €
-11% Discount
Malossi
Crankshaft Malossi MHR RHQ Minarelli vertical
Article no.: M537621

Crankshaft Malossi MHR RHQ Minarelli vertical

267,00 €
In stock
2Fast
Small End Bearing 2Fast 14x17x17mm
Article no.: TFAST154

Small End Bearing 2Fast 14x17x17mm

21,00 €
In stock
2Fast
Small End Bearing 2Fast 12x17x16mm
Article no.: TFAST152

Small End Bearing 2Fast 12x17x16mm

15,00 €
In stock
Sale
2Fast
Connecting Rod 2Fast 95mm pin 18 x 37mm Minarelli
Article no.: TFAST142

Connecting Rod 2Fast 95mm pin 18 x 37mm Minarelli

209,00 €
In stock
2Fast
Connecting Rod 2Fast 90mm pin 18 x 37mm Minarelli
Article no.: TFAST136

Connecting Rod 2Fast 90mm pin 18 x 37mm Minarelli

209,00 €
In stock
2Fast
Connecting Rod 2Fast 100mm pin 18 x 41mm Piaggio
Article no.: TFAST130

Connecting Rod 2Fast 100mm pin 18 x 41mm Piaggio

209,00 €
In stock
2Fast
Connecting Rod 2Fast 100mm pin 18 x 37mm Minarelli
Article no.: TFAST129

Connecting Rod 2Fast 100mm pin 18 x 37mm Minarelli

201,00 €
In stock
2Fast
Crankshaft 2Fast 39,3mm stroke / 85mm conrod Minarelli horizontal
Article no.: TFAST084

Crankshaft 2Fast 39,3mm stroke / 85mm conrod Minarelli horizontal

458,00 €
In stock
2Fast
Connecting Rod 2Fast 95mm crankpin 18x41mm
Article no.: TFAST065-ET01

Connecting Rod 2Fast 95mm crankpin 18x41mm

209,00 €
In stock
Polini
Crankshaft Polini Evolution P.R.E. 70cc Piaggio Zip
Article no.: P210.0050

Crankshaft Polini Evolution P.R.E. 70cc Piaggio Zip

479,00 €
In stock
RRP
565,00 €
-15% Discount
Polini
Oil Seal Polini (crankshaft) P.R.E. 70cc Piaggio
Article no.: P285.0144

Oil Seal Polini (crankshaft) P.R.E. 70cc Piaggio

19,50 €
In stock
RRP
20,00 €
-3% Discount
Polini
Oil Seal Polini (crankshaft) P.R.E. 100cc Piaggio
Article no.: P285.0143

Oil Seal Polini (crankshaft) P.R.E. 100cc Piaggio

29,00 €
In stock
Top Performances
Crankshaft Top Performances 44mm stroke / 85mm conrod Minarelli horizontal
Article no.: T9925980

Crankshaft Top Performances 44mm stroke / 85mm conrod Minarelli horizontal

165,00 €
In stock
RRP
235,00 €
-30% Discount
Sale
Polini
Crankshaft Polini PRE4 70cc Piaggio / Minarelli
Article no.: P210.0085

Crankshaft Polini PRE4 70cc Piaggio / Minarelli

607,00 €
In stock
RRP
714,00 €
-15% Discount
Top Performances
Crankshaft Top Performances 44mm stroke / 85mm conrod Piaggio
Article no.: T9934920

Crankshaft Top Performances 44mm stroke / 85mm conrod Piaggio

179,00 €
In stock
RRP
231,00 €
-23% Discount
2Fast
Crankshaft 2Fast 44mm stroke / 90mm conrod Minarelli horizontal
Article no.: TFAST026

Crankshaft 2Fast 44mm stroke / 90mm conrod Minarelli horizontal

449,00 €
In stock
Ottopuntouno Racing Parts
Crankshaft Ottopuntouno 8.1 85mm conrod 85mm Minarelli horizontal
Article no.: OPU002

Crankshaft Ottopuntouno 8.1 85mm conrod 85mm Minarelli horizontal

491,00 €
In stock
RRP
599,00 €
-18% Discount
Malossi
Small End Bearing Malossi reinforced MHR 10x14x13mm
Article no.: M663209.0B

Small End Bearing Malossi reinforced MHR 10x14x13mm

12,00 €
In stock
Sale
Malossi
Small End Bearing Malossi MHR
Article no.: Malossi-Aguilles-renforcee
1

Small End Bearing Malossi MHR

8,70 €
In stock
Malossi
Crankshaft Malossi MHR RHQ 12mm pin Minarelli horizontal
Article no.: M538009

Crankshaft Malossi MHR RHQ 12mm pin Minarelli horizontal

257,00 €
In stock
RRP
273,00 €
-6% Discount
Malossi
Crankshaft Malossi MHR RHQ Piaggio
Article no.: M537600
2

Crankshaft Malossi MHR RHQ Piaggio

262,00 €
In stock
RRP
284,00 €
-8% Discount
Naraku
Crankshaft Naraku Racing HPC CPI / Keeway / China 2T Euro 2
Article no.: NK105.18

Crankshaft Naraku Racing HPC CPI / Keeway / China 2T Euro 2

107,00 €
In stock
112,00 €
-4% Discount
Doppler
Crankshaft Doppler Endurance Peugeot horizontal
Article no.: CGN464917

Crankshaft Doppler Endurance Peugeot horizontal

165,00 €
In stock
RRP
179,00 €
-8% Discount
Athena
Crankshaft Athena 43mm stroke 85mm conrod 12mm pin Minarelli vertical
Article no.: ATH070314/2

Crankshaft Athena 43mm stroke 85mm conrod 12mm pin Minarelli vertical

111,00 €
In stock
Sale
Athena
Crankshaft Athena stroke 43mm / conrod 85mm Minarelli
Article no.: AT-S410485320004

Crankshaft Athena stroke 43mm / conrod 85mm Minarelli

121,00 €
In stock
145,00 €
-17% Discount
Sale
Doppler
Crankshaft Doppler Endurance 12mm pin Minarelli horizontal
Article no.: CGN449885

Crankshaft Doppler Endurance 12mm pin Minarelli horizontal

148,00 €
In stock
RRP
155,00 €
-5% Discount
Doppler
Crankshaft Doppler Endurance 10mm pin Minarelli horizontal
Article no.: CGN441280

Crankshaft Doppler Endurance 10mm pin Minarelli horizontal

133,00 €
In stock
RRP
149,00 €
-11% Discount
Sale
Doppler
Crankshaft Doppler Endurance Yamaha BW's / Slider
Article no.: CGN441277

Crankshaft Doppler Endurance Yamaha BW's / Slider

146,00 €
In stock
RRP
149,00 €
-2% Discount
Naraku
Crankshaft Naraku Yamaha / MBK 50cc 4-stroke
Article no.: NK600.57

Crankshaft Naraku Yamaha / MBK 50cc 4-stroke

118,00 €
In stock
Polini
Crankshaft Polini For Race 10mm pin Minarelli vertical
Article no.: P210.0049

Crankshaft Polini For Race 10mm pin Minarelli vertical

145,00 €
In stock
RRP
170,00 €
-15% Discount
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Scooter Crankshafts: Reliability and Performance

The cranktrain primarily refers to the crankshaft, crankshaft bearings, and oil seals. In our online shop, this category also includes piston pin bearings (small end bearings) as well as matching spare parts and accessories.

The crankshaft and its components require special attention regarding performance and reliability.

All components are available for the most popular models (Yamaha Aerox and Jog R, Piaggio Zip, NRG and Typhoon, Peugeot Kisbee and TKR, etc.) with engines from Minarelli, Piaggio, Peugeot, Kymco, Morini, or GY6.

Crankshaft

The crankshaft is the central component of the cranktrain. It must always match the cylinder: the more powerful the cylinder, the more robust the crankshaft should be. Depending on the setup, it is also important to ensure that the stroke and connecting rod length are compatible, as effective engine tuning is precision work.

To make selection easier, we have divided cylinders and crankshafts into performance levels: Original, Sport, Racing, and High-End.

We offer crankshafts from renowned brands such as Stage6, Stage6 R/T, Motoforce, Malossi, Polini, 2Fast, and many others.

Crankshaft Bearings and Oil Seals

Even in stock engines, it is usually not the crankshaft itself that wears out, but rather the bearings and oil seals. These should be replaced regularly, not only in tuned engines but also in original setups.

For tuned engines, reinforced bearings are explicitly recommended.

Our range includes brands such as Stage6 R/T, SKF, Polini, and Motoforce.

small end Bearings and Accessories

The small end bearing (needle bearing) is usually replaced together with the piston. However, since it sits on the connecting rod and its size also depends on it, it is assigned to the crankshaft category.

Warning: Always check for the correct size! Some cylinder kits use larger piston pins than the original.

Accessories include replacement connecting rods, woodruff keys (standard or offset for adjusting ignition timing), shims, and other specific components.

FAQ – Frequently Asked Questions about Crankshafts

→ Do I need to replace the crankshaft when increasing displacement? Yes. Original crankshafts are generally not designed for higher torque and increased RPM and should be replaced with a reinforced or racing version.

→ Can I replace the crankshaft myself? This is a demanding task that requires special tools. Without experience, it is recommended to leave this task to a professional to avoid damage. If you want to do it yourself, follow the workshop manual closely or use appropriate guides / tutorials.
Note: The same special tools are required for changing bearings and oil seals.

→ How do I recognize worn bearings? Strong, unusual vibrations throughout the vehicle are a typical sign. Often, a grinding or rumbling noise can be heard while the engine is running.

→ How do I recognize defective oil seals? Leaking oil seals allow false air into the engine, leading to a lean mixture. Typical symptoms include unstable idling, poor engine performance, and a light-colored / whitish spark plug.

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