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Crankshaft

(131 products)
Moped Crankshafts Bearings and Oil Seals Small End Bearings Crankshaft Accessories
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Product type
Bearing open Connecting rod kit Crankshaft Crankshaft accessories Crankshaft bearing kit Engine case accessories Needle bearing Oil seal Wheel bearing set Woodruff key Nut O-ring Oil pump gear
Brand
2Fast Airsal Athena Doppler Jasil Malossi MotoForce MVT Naraku Polini RMS Schmitt SKF Stage6 Stage6 R/T Standard Parts Swiing Tomos Top Performances
Price
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MotoForce
Oil Seal crankshaft 15x21x4.5mm MBK 51
Article no.: MF96.00060

Oil Seal crankshaft 15x21x4.5mm MBK 51

1,50 €
In stock
RRP
1,70 €
-12% Discount
MotoForce
Woodruff Key ignition Peugeot
Article no.: MF60.17518
1

Woodruff Key ignition Peugeot

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

Small End Bearing reinforced

2,40 €
In stock
6,60 €
-64% Discount
MotoForce
Crankshaft OEM quality 10mm MotoForce Piaggio Ciao
Article no.: MF30.10002

Crankshaft OEM quality 10mm MotoForce Piaggio Ciao

44,50 €
In stock
MotoForce
Crankshaft Bearing Set Peugeot 103
Article no.: MF33.13201

Crankshaft Bearing Set Peugeot 103

15,50 €
In stock
Stage6
Small End Bearing HQ Stage6
Article no.: S6-8020_SIZES
3

Small End Bearing HQ Stage6

7,50 €
In stock
Stage6
Crankshaft Bearing Kit Stage6 metal cage Peugeot Fox
Article no.: S6-8031321/MET

Crankshaft Bearing Kit Stage6 metal cage Peugeot Fox

38,00 €
In stock
RRP
42,00 €
-10% Discount
New
Stage6
Crankshaft Stage6 MBK 51
Article no.: S6-8013000

Crankshaft Stage6 MBK 51

129,00 €
In stock
RRP
143,00 €
-10% Discount
Stage6
Oil Seals crankshaft Stage6 NBR Peugeot 103
Article no.: S6-8041320

Oil Seals crankshaft Stage6 NBR Peugeot 103

4,90 €
In stock
Stage6
Crankshaft Bearing Set Stage6 C3 polymer cage Peugeot 103
Article no.: S6-80332C3/TN9

Crankshaft Bearing Set Stage6 C3 polymer cage Peugeot 103

22,00 €
In stock
RRP
24,00 €
-8% Discount
Stage6
Crankshaft Bearing Set Stage6 C3 steel cage Peugeot 103
Article no.: S6-80332C3/MET

Crankshaft Bearing Set Stage6 C3 steel cage Peugeot 103

20,00 €
In stock
RRP
22,00 €
-9% Discount
Stage6
Crankshaft Stage6 HPC Peugeot 103 SPX / RCX
Article no.: S6-8017401

Crankshaft Stage6 HPC Peugeot 103 SPX / RCX

129,00 €
In stock
RRP
143,00 €
-10% Discount
Stage6
Crankshaft Stage6 HPC Peugeot 103 SP (electronic)
Article no.: S6-8017400

Crankshaft Stage6 HPC Peugeot 103 SP (electronic)

129,00 €
In stock
RRP
143,00 €
-10% Discount
Stage6
O-Ring oil filler cap Stage6 Piaggio
Article no.: S6-SSP141ET01

O-Ring oil filler cap Stage6 Piaggio

0,90 €
In stock
1,20 €
-25% Discount
Malossi
Small End Bearing Malossi MBK 51 13x16x14mm
Article no.: M663276B

Small End Bearing Malossi MBK 51 13x16x14mm

16,00 €
In stock
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

27,00 €
In stock
Polini
Small end bearing Polini
Article no.: P280.00_SMALLENDBEARING

Small end bearing Polini

8,40 €
In stock
Naraku
Crankshaft Bearing + Oil Seal Kit Peugeot Fox 50 1994-1998
Article no.: NK168.01

Crankshaft Bearing + Oil Seal Kit Peugeot Fox 50 1994-1998

48,50 €
In stock
Standard Parts
Crankshaft Nut moped
Article no.: CGN487178

Crankshaft Nut moped

1,10 €
In stock
Polini
Crankshaft Bearing Set Polini Original Piaggio Ciao
Article no.: P282.0208

Crankshaft Bearing Set Polini Original Piaggio Ciao

9,70 €
In stock
RRP
11,50 €
-16% Discount
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
Polini
Crankshaft Bearings Polini MBK 51
Article no.: P282.0010

Crankshaft Bearings Polini MBK 51

29,50 €
In stock
RRP
34,00 €
-13% Discount
Standard Parts
Woodruff Key 2x3.7mm Simson S51
Article no.: MOF-41336

Woodruff Key 2x3.7mm Simson S51

0,90 €
In stock
Standard Parts
Crankshaft Bearings + Seals Puch Maxi E50 old engine
Article no.: MOF-44405

Crankshaft Bearings + Seals Puch Maxi E50 old engine

7,40 €
In stock
MVT
Oil Seal crankshaft MVT G2 / G3 / G4
Article no.: MVT-SPIG234

Oil Seal crankshaft MVT G2 / G3 / G4

8,40 €
In stock
RRP
9,90 €
-15% Discount
Doppler
Crankshaft Oil Seals Doppler FKM Peugeot 103
Article no.: CGN516945

Crankshaft Oil Seals Doppler FKM Peugeot 103

7,90 €
In stock
10,00 €
-21% Discount
Doppler
Crankshaft Oil Seals Doppler FKM MBK 51
Article no.: CGN516947

Crankshaft Oil Seals Doppler FKM MBK 51

7,90 €
In stock
9,80 €
-19% Discount
Standard Parts
Crankshaft Oil Seal nitrile Peugeot 103 Fox
Article no.: CGN526222

Crankshaft Oil Seal nitrile Peugeot 103 Fox

4,80 €
In stock
Standard Parts
Crankshaft Tomos A3 / A35 / A55
Article no.: SP-94251

Crankshaft Tomos A3 / A35 / A55

79,50 €
In stock
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
Standard Parts
Wheel Bearing Kit front wheel reinforced Piaggio Ciao
Article no.: IP42153

Wheel Bearing Kit front wheel reinforced Piaggio Ciao

27,00 €
In stock
Polini
Crankshaft Bearings Polini Evolution Piaggio Ciao (6202.C4)
Article no.: P280.0040

Crankshaft Bearings Polini Evolution Piaggio Ciao (6202.C4)

6,60 €
In stock
Polini
Crankshaft Bearings Polini Peugeot 103
Article no.: P280.0020

Crankshaft Bearings Polini Peugeot 103

9,30 €
In stock
RRP
11,00 €
-15% Discount
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
Standard Parts
Support Plate for crankcase oil seal Peugeot 103
Article no.: L-SP163932

Support Plate for crankcase oil seal Peugeot 103

4,10 €
In stock
Standard Parts
Crankshaft Bearings and Oil Seals Tomos A35
Article no.: MF33.13900

Crankshaft Bearings and Oil Seals Tomos A35

15,00 €
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
Standard Parts
Crankshaft Oil Thrower Spacer Disc 39x47x1mm Simson
Article no.: MOF-41513

Crankshaft Oil Thrower Spacer Disc 39x47x1mm Simson

2,20 €
In stock
Standard Parts
Crankshaft Oil Thrower Spacer Disc 39x47x0.2mm Simson
Article no.: MOF-41457

Crankshaft Oil Thrower Spacer Disc 39x47x0.2mm Simson

1,80 €
In stock
Standard Parts
Crankshaft Oil Thrower Spacer Disc 39x47x0.3mm Simson
Article no.: MOF-41374

Crankshaft Oil Thrower Spacer Disc 39x47x0.3mm Simson

2,00 €
In stock
Standard Parts
Crankshaft Bearing E20 brass cage Puch Maxi 20x47x12mm (x1)
Article no.: LAG.E20

Crankshaft Bearing E20 brass cage Puch Maxi 20x47x12mm (x1)

24,00 €
In stock
2Fast
Small End Bearing 2Fast 14x17x17mm
Article no.: TFAST154

Small End Bearing 2Fast 14x17x17mm

21,00 €
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 12mm piston pin Piaggio Ciao
Article no.: P210.0074

Crankshaft Polini Evolution 12mm piston pin Piaggio Ciao

238,00 €
In stock
RRP
268,00 €
-11% Discount
Malossi
Small End Bearing Malossi MHR
Article no.: Malossi-Aguilles-renforcee
1

Small End Bearing Malossi MHR

8,70 €
In stock
Malossi
Crankshaft Malossi RHQ Piaggio Ciao for MP-One stroke 43mm
Article no.: M5318739

Crankshaft Malossi RHQ Piaggio Ciao for MP-One stroke 43mm

268,00 €
In stock
RRP
300,00 €
-11% Discount
Malossi
Crankshaft Malossi RHQ Piaggio Ciao pin 12mm - stroke 43mm
Article no.: M5319434

Crankshaft Malossi RHQ Piaggio Ciao pin 12mm - stroke 43mm

308,00 €
In stock
RRP
310,00 €
-1% Discount
Malossi
Crankshaft Malossi RHQ Piaggio Ciao pin 10mm - stroke 43mm
Article no.: M5319440

Crankshaft Malossi RHQ Piaggio Ciao pin 10mm - stroke 43mm

293,00 €
In stock
RRP
300,00 €
-2% Discount
Malossi
Crankshaft Malossi axle 12mm Piaggio Ciao
Article no.: M531802

Crankshaft Malossi axle 12mm Piaggio Ciao

251,00 €
In stock
RRP
310,00 €
-19% Discount
Malossi
Needle Bearing Malossi Piaggio Ciao 10x13x14.5mm
Article no.: M663974B

Needle Bearing Malossi Piaggio Ciao 10x13x14.5mm

9,00 €
In stock
RRP
11,00 €
-18% Discount
Sale
Polini
Crankshaft Polini Peugeot 103 SP / MV (e-starter)
Article no.: P210.0013

Crankshaft Polini Peugeot 103 SP / MV (e-starter)

240,00 €
In stock
RRP
275,00 €
-13% Discount
Doppler
Small End Bearing Doppler reinforced 13x16x14 MBK 51
Article no.: CGN461981

Small End Bearing Doppler reinforced 13x16x14 MBK 51

10,00 €
In stock
Doppler
Crankshaft Doppler Endurance Peugeot 103 SPX / RCX
Article no.: CGN441285

Crankshaft Doppler Endurance Peugeot 103 SPX / RCX

135,00 €
In stock
144,00 €
-6% Discount
Doppler
Crankshaft Doppler Endurance Peugeot 103 SP / MV (electronic)
Article no.: CGN441283

Crankshaft Doppler Endurance Peugeot 103 SP / MV (electronic)

135,00 €
In stock
144,00 €
-6% Discount
SKF
Crankshaft Bearing Set SKF MBK 51
Article no.: CGN323821

Crankshaft Bearing Set SKF MBK 51

27,00 €
In stock
Doppler
Crankshaft Doppler Endurance MBK 51 (kickstart)
Article no.: CGN441286

Crankshaft Doppler Endurance MBK 51 (kickstart)

135,00 €
In stock
144,00 €
-6% Discount
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123

Moped Crankshafts: Reliability and Performance

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

The crankshaft and its components require special attention, both in terms of performance and reliability.

All components are available for the most popular models (Piaggio Ciao, Peugeot 103, Puch and Simson mopeds, etc.).

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 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, Airsal, Malossi, Polini, MVT, Doppler, 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, even on 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 classified under crankshaft accessories in our shop.

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

Accessories include replacement connecting rods, woodruff keys, shims, and other specific components.

FAQ – Frequently Asked Questions about Crankshafts

→ Do I need to replace the crankshaft when increasing displacement? Yes. The original crankshaft is generally not designed for the 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.
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 / whitish spark plug.

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