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Crankshaft

(199 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
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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MotoForce
Crankshaft Motoforce 22 Zähne GY6 50cc 4T
Article no.: MF30.13901

Crankshaft Motoforce 22 Zähne GY6 50cc 4T

55,00 €
In stock
RRP
63,00 €
-13% Discount
MotoForce
Crankshaft Motoforce Peugeot / Sym 50cc 4T
Article no.: MF30.13400

Crankshaft Motoforce Peugeot / Sym 50cc 4T

65,50 €
In stock
RRP
68,50 €
-4% Discount
MotoForce
Woodruff Key ignition Peugeot
Article no.: MF60.17518
2

Woodruff Key ignition Peugeot

3,20 €
In stock
RRP
3,70 €
-14% Discount
MotoForce
Small End Bearing reinforced
Article no.: MF33000_MF_AGUILLES
125

Small End Bearing reinforced

from 2,40 €
In stock
6,60 €
-64% Discount
MotoForce
Crankshaft Motoforce Peugeot horizontal
Article no.: MF30.17700
2

Crankshaft Motoforce Peugeot horizontal

53,00 €
In stock
MotoForce
Crankshaft Bearing Set Morini 50cc
Article no.: MF33.15003
1

Crankshaft Bearing Set Morini 50cc

32,50 €
In stock
MotoForce
Woodruff Key ignition Minarelli / Piaggio / China 2-stroke
Article no.: MF60.16615
17

Woodruff Key ignition Minarelli / Piaggio / China 2-stroke

1,10 €
In stock
RRP
1,20 €
-8% Discount
MotoForce
Crankshaft OEM quality MotoForce Piaggio Zip 4T
Article no.: MF30.14010

Crankshaft OEM quality MotoForce Piaggio Zip 4T

53,50 €
In stock
New
MotoForce
Crankshaft OEM quality 10mm MotoForce Peugeot Kisbee 4T
Article no.: MF30.17801

Crankshaft OEM quality 10mm MotoForce Peugeot Kisbee 4T

49,50 €
In stock
New
MotoForce
Crankshaft MotoForce 10mm pin PGO Big Max
Article no.: MF30.18601

Crankshaft MotoForce 10mm pin PGO Big Max

48,00 €
In stock
RRP
79,00 €
-39% Discount
Sale
MotoForce
Crankshaft reinforced MotoForce Peugeot horizontal
Article no.: MF30.17703

Crankshaft reinforced MotoForce Peugeot horizontal

99,00 €
In stock
MotoForce
Crankshaft reinf. MotoForce Peugeot TKR after 2004 w. compressor
Article no.: MF30.17501

Crankshaft reinf. MotoForce Peugeot TKR after 2004 w. compressor

79,00 €
In stock
MotoForce
Crankshaft Seals Peugeot Kisbee
Article no.: MF96.00039

Crankshaft Seals Peugeot Kisbee

2,60 €
In stock
MotoForce
Crankshaft Bearing Set Minarelli
Article no.: MF33.16607
49

Crankshaft Bearing Set Minarelli

22,00 €
In stock
MotoForce
Crankshaft Bearing Set Piaggio
Article no.: MF33.14009
16

Crankshaft Bearing Set Piaggio

35,50 €
In stock
MotoForce
Crankshaft reinforced MotoForce Minarelli vertical
Article no.: MF30.16801
37

Crankshaft reinforced MotoForce Minarelli vertical

53,00 €
In stock
RRP
58,50 €
-9% Discount
Sale
MotoForce
Crankshaft Motoforce Minarelli vertical
Article no.: MF30.16800
15

Crankshaft Motoforce Minarelli vertical

40,00 €
In stock
RRP
48,00 €
-17% Discount
Sale
MotoForce
Crankshaft verstärkt MotoForce Minarelli horizontal
Article no.: MF30.16601
13

Crankshaft verstärkt MotoForce Minarelli horizontal

54,00 €
In stock
RRP
62,00 €
-13% Discount
Sale
MotoForce
Crankshaft Motoforce Minarelli horizontal
Article no.: MF30.16600
12

Crankshaft Motoforce Minarelli horizontal

38,50 €
In stock
MotoForce
Crankshaft verstärkt MotoForce Piaggio
Article no.: MF30.14001
11

Crankshaft verstärkt MotoForce Piaggio

56,50 €
In stock
RRP
58,50 €
-3% Discount
MotoForce
Crankshaft Motoforce Piaggio / Gilera
Article no.: MF30.14000
7

Crankshaft Motoforce Piaggio / Gilera

35,50 €
In stock
RRP
37,00 €
-4% Discount
MotoForce
Oil Seals for crankshaft Piaggio
Article no.: MF96.00031
2

Oil Seals for crankshaft Piaggio

5,70 €
In stock
RRP
6,50 €
-12% Discount
MotoForce
Oil Seals for crankshaft Minarelli
Article no.: MF96.00030
20

Oil Seals for crankshaft Minarelli

6,50 €
In stock
RRP
7,10 €
-8% Discount
MotoForce
Crankshaft Motoforce Peugeot horizontal w/o pump
Article no.: MF30.17702

Crankshaft Motoforce Peugeot horizontal w/o pump

67,00 €
In stock
Stage6
Crankshaft Stage6 HPC PGO Big Max / T-Rex
Article no.: S6-8018600

Crankshaft Stage6 HPC PGO Big Max / T-Rex

129,00 €
In stock
RRP
205,00 €
-37% Discount
Sale
Stage6
Crankshaft Stage6 Pro Replica 12mm pin Minarelli horizontal
Article no.: S6-8116600/12

Crankshaft Stage6 Pro Replica 12mm pin Minarelli horizontal

129,00 €
In stock
RRP
143,00 €
-10% Discount
Stage6
Small End Bearing HQ Stage6
Article no.: S6-8020_SIZES
198

Small End Bearing HQ Stage6

from 8,00 €
In stock
11,00 €
-27% Discount
Stage6
Crankshaft HPC MK2 Piston Pin Stage6=10mm Yamaha BW's
Article no.: S6-8016805
3

Crankshaft HPC MK2 Piston Pin Stage6=10mm Yamaha BW's

179,00 €
In stock
RRP
198,00 €
-10% Discount
Stage6
Crankshaft HPC MK2 Piston Pin Stage6 12mm Yamaha BW's
Article no.: S6-8016805/12
1

Crankshaft HPC MK2 Piston Pin Stage6 12mm Yamaha BW's

189,00 €
In stock
RRP
210,00 €
-10% Discount
Stage6
Crankshaft Stage6 Pro Replica Peugeot horizontal
Article no.: S6-8117800
2

Crankshaft Stage6 Pro Replica Peugeot horizontal

84,00 €
In stock
RRP
132,00 €
-36% Discount
Sale
Stage6
Crankshaft Stage6 Pro Replica 10mm pin Minarelli vertical
Article no.: S6-8116800
1

Crankshaft Stage6 Pro Replica 10mm pin Minarelli vertical

84,00 €
In stock
RRP
132,00 €
-36% Discount
Sale
Stage6
Crankshaft Stage6 Pro Replica Piaggio (NRG / Gilera Stalker)
Article no.: S6-8114000
1

Crankshaft Stage6 Pro Replica Piaggio (NRG / Gilera Stalker)

89,00 €
In stock
RRP
132,00 €
-33% Discount
Sale
Stage6
Crankshaft Stage6 HPC MK2 12mm pin Minarelli horizontal
Article no.: S6-8016601/12
1

Crankshaft Stage6 HPC MK2 12mm pin Minarelli horizontal

189,00 €
In stock
RRP
210,00 €
-10% Discount
Stage6
Crankshaft Stage6 HPC MK2 10mm pin Minarelli horizontal
Article no.: S6-8016601
3

Crankshaft Stage6 HPC MK2 10mm pin Minarelli horizontal

179,00 €
In stock
RRP
198,00 €
-10% Discount
Stage6
Crankshaft Stage6 Pro Replica Peugeot horizontal (w/o air pump)
Article no.: S6-8117801

Crankshaft Stage6 Pro Replica Peugeot horizontal (w/o air pump)

119,00 €
In stock
RRP
129,00 €
-8% Discount
New
Stage6
Crankshaft Stage6 Pro Replica Peugeot vertical after 2004
Article no.: S6-8117502

Crankshaft Stage6 Pro Replica Peugeot vertical after 2004

119,00 €
In stock
RRP
129,00 €
-8% Discount
New
Stage6
Small End Bearing HQ Stage6 silver 12-to-10mm 10x17x13mm
Article no.: S6-802055
28

Small End Bearing HQ Stage6 silver 12-to-10mm 10x17x13mm

12,00 €
In stock
RRP
19,00 €
-37% Discount
Sale
Stage6
Crankshaft Stage6 HPC Peugeot vertical
Article no.: S6-8017505

Crankshaft Stage6 HPC Peugeot vertical

179,00 €
In stock
RRP
198,00 €
-10% Discount
Stage6
Stage6 Crankshaft Nut M12x1.25mm
Article no.: S6-79140ET03
4

Stage6 Crankshaft Nut M12x1.25mm

5,20 €
In stock
Stage6 R/T
Crank Web Pads aluminium Stage6 R/T for HIGH BALANCE crankshafts, Piaggio
Article no.: S6-79140ET15

Crank Web Pads aluminium Stage6 R/T for HIGH BALANCE crankshafts, Piaggio

11,50 €
In stock
RRP
32,00 €
-64% Discount
Stage6 R/T
Crankshaft Stage6 R/T 44mm stroke / 90mm conrod Minarelli
Article no.: S6-7916605

Crankshaft Stage6 R/T 44mm stroke / 90mm conrod Minarelli

379,00 €
In stock
RRP
421,00 €
-10% Discount
Stage6 R/T
Crankshaft Stage6 R/T 85mm conrod Piaggio
Article no.: S6-7914001

Crankshaft Stage6 R/T 85mm conrod Piaggio

249,00 €
In stock
RRP
276,00 €
-10% Discount
Stage6 R/T
Oil Seals crankshaft + water pump Stage6 R/T Minarelli LC
Article no.: S6-8041669

Oil Seals crankshaft + water pump Stage6 R/T Minarelli LC

18,50 €
In stock
RRP
20,00 €
-8% Discount
Stage6 R/T
Oil Seals crankshaft + water pump Stage6 R/T Piaggio LC
Article no.: S6-8041409

Oil Seals crankshaft + water pump Stage6 R/T Piaggio LC

12,00 €
In stock
RRP
22,00 €
-45% Discount
Sale
Stage6 R/T
Oil Seal Stage6 R/T FKM 20x30x7mm
Article no.: S6-79ET001

Oil Seal Stage6 R/T FKM 20x30x7mm

9,10 €
In stock
Stage6 R/T
Crankshaft Oil Seals Stage6 R/T NBR Peugeot Speedfight 3 + 4
Article no.: S6-8041781

Crankshaft Oil Seals Stage6 R/T NBR Peugeot Speedfight 3 + 4

12,00 €
In stock
RRP
17,00 €
-29% Discount
Sale
Stage6 R/T
Crankshaft Oil Seals Stage6 R/T NBR Peugeot Speedfight 1 + 2
Article no.: S6-8041751

Crankshaft Oil Seals Stage6 R/T NBR Peugeot Speedfight 1 + 2

12,00 €
In stock
RRP
17,00 €
-29% Discount
Sale
Stage6 R/T
Crankshaft Oil Seals Stage6 R/T FKM Minarelli
Article no.: S6-8041661
1

Crankshaft Oil Seals Stage6 R/T FKM Minarelli

17,00 €
In stock
Stage6 R/T
Crankshaft Oil Seals Stage6 R/T FKM Piaggio Zip
Article no.: S6-8041401

Crankshaft Oil Seals Stage6 R/T FKM Piaggio Zip

17,00 €
In stock
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 polymer Peugeot vertical
Article no.: S6-8031751/TN9

Crankshaft Bearing Set Stage6 R/T C4 polymer Peugeot vertical

39,50 €
In stock
RRP
43,00 €
-8% Discount
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 steel Peugeot vertical
Article no.: S6-8031751/MET

Crankshaft Bearing Set Stage6 R/T C4 steel Peugeot vertical

35,00 €
In stock
RRP
38,00 €
-8% Discount
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 polymer Peugeot horizontal
Article no.: S6-8031780/TN9

Crankshaft Bearing Set Stage6 R/T C4 polymer Peugeot horizontal

36,00 €
In stock
RRP
40,00 €
-10% Discount
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 steel Peugeot horizontal
Article no.: S6-8031780/MET

Crankshaft Bearing Set Stage6 R/T C4 steel Peugeot horizontal

24,00 €
In stock
RRP
37,00 €
-35% Discount
Sale
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 steel Peugeot vertical Euro 1
Article no.: S6-8031750/MET

Crankshaft Bearing Set Stage6 R/T C4 steel Peugeot vertical Euro 1

39,50 €
In stock
RRP
43,00 €
-8% Discount
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 polymer Minarelli vertical
Article no.: S6-8031660/TN9
1

Crankshaft Bearing Set Stage6 R/T C4 polymer Minarelli vertical

36,00 €
In stock
RRP
40,00 €
-10% Discount
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 steel cage Minarelli
Article no.: S6-8031660/MET
4

Crankshaft Bearing Set Stage6 R/T C4 steel cage Minarelli

34,00 €
In stock
RRP
37,00 €
-8% Discount
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 polymer Piaggio Zip
Article no.: S6-8031400/TN9
1

Crankshaft Bearing Set Stage6 R/T C4 polymer Piaggio Zip

47,00 €
In stock
RRP
52,00 €
-10% Discount
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T steel cage Piaggio Zip
Article no.: S6-8031400/MET

Crankshaft Bearing Set Stage6 R/T steel cage Piaggio Zip

44,00 €
In stock
RRP
48,00 €
-8% Discount
Polini
Small End Bearing Polini Big Evolution 13x17x17,3mm Piaggio / Minarelli
Article no.: P280.0057

Small End Bearing Polini Big Evolution 13x17x17,3mm Piaggio / Minarelli

24,00 €
In stock
RRP
27,00 €
-11% Discount
Sale
Polini
Small end bearing Polini
Article no.: P280.00_SMALLENDBEARING
128

Small end bearing Polini

from 8,40 €
In stock
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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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