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Crankshaft

(190 Produkte)
Roller 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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Standard Parts
Woodruff Key 3x5mm Kymco
Artikel-Nr.: OE-KYM813035

Woodruff Key 3x5mm Kymco

6,30 €
In stock
Standard Parts
Crankshaft Oil Seal - 24x43x6mm Kymco
Artikel-Nr.: OE-KYM20926

Crankshaft Oil Seal - 24x43x6mm Kymco

3,50 €
In stock
Naraku
Crankshaft bearings and oil seals, Kymco Fever / Meteorit
Artikel-Nr.: NK100.32

Crankshaft bearings and oil seals, Kymco Fever / Meteorit

32,50 €
In stock
Yamaha
Woodruff Key Yamaha Aerox / BW's
Artikel-Nr.: OE-MAL90280-03017

Woodruff Key Yamaha Aerox / BW's

6,70 €
In stock
Piaggio
Ignition Woodruff Key Piaggio NRG / Typhoon
Artikel-Nr.: OE-PIA000267

Ignition Woodruff Key Piaggio NRG / Typhoon

2,90 €
In stock
Bidalot
Small End Bearing Bidalot 13x17x17.5mm
Artikel-Nr.: BID81200305

Small End Bearing Bidalot 13x17x17.5mm

16,00 €
In stock
Sale
Polini
Crankshaft Bearings Polini + Oil Seals Yamaha Aerox / BW's
Artikel-Nr.: P282.0002

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

31,00 €
In stock
Polini
Crankshaft Bearing Set Polini Piaggio / Gilera / Aprilia / Vespa
Artikel-Nr.: 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
Artikel-Nr.: 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
Artikel-Nr.: P285.0002

Crankshaft Oil Seals Polini Evolution Viton® Minarelli

20,00 €
In stock
Naraku
Crankshaft Bearings HD and Seals FKM Naraku Kymco / SYM vertical
Artikel-Nr.: NK104.33

Crankshaft Bearings HD and Seals FKM Naraku Kymco / SYM vertical

51,00 €
In stock
Naraku
Crankshaft Bearings HD + Oil Seals Naraku Kymco / SYM horizontal
Artikel-Nr.: NK104.26

Crankshaft Bearings HD + Oil Seals Naraku Kymco / SYM horizontal

54,00 €
In stock
Naraku
Crankshaft Bearings and Oil Seals FKM Naraku Honda X8R
Artikel-Nr.: NK104.24

Crankshaft Bearings and Oil Seals FKM Naraku Honda X8R

61,00 €
In stock
Naraku
Crankshaft Bearings HD and Oil Seals FKM Naraku Kymco / SYM horizontal
Artikel-Nr.: NK104.25

Crankshaft Bearings HD and Oil Seals FKM Naraku Kymco / SYM horizontal

48,00 €
In stock
Naraku
Crankshaft Bearings HD + Seals FKM Naraku Kymco / SYM horizontal
Artikel-Nr.: NK104.02

Crankshaft Bearings HD + Seals FKM Naraku Kymco / SYM horizontal

41,00 €
In stock
Naraku
Crankshaft Bearings HD and Oil Seals FKM Naraku Honda X8R
Artikel-Nr.: 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
Artikel-Nr.: NK103.96

Oil Seal Naraku FKM Premium 24x43x6mm

4,80 €
In stock
Naraku
Oil Seal Naraku FKM Premium 22x38x6mm
Artikel-Nr.: NK103.91

Oil Seal Naraku FKM Premium 22x38x6mm

5,40 €
In stock
Naraku
Oil Seal Naraku FKM Premium 17x30x6mm
Artikel-Nr.: NK103.47

Oil Seal Naraku FKM Premium 17x30x6mm

5,40 €
In stock
Standard Parts
Crankshaft Bearings and Oil Seals Yamaha Aerox 4-stroke
Artikel-Nr.: SP-49395

Crankshaft Bearings and Oil Seals Yamaha Aerox 4-stroke

29,50 €
In stock
30,50 €
-3% Discount
Polini
Small End Bearing Polini P.R.E. 2 Piaggio Zip SP LC
Artikel-Nr.: 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
Artikel-Nr.: T9909940

Woodruff Key Top Performances Piaggio / Suzuki

7,20 €
In stock
Standard Parts
Oil seals crankshaft PGO Big Max
Artikel-Nr.: MF96.00038

Oil seals crankshaft PGO Big Max

6,20 €
In stock
Standard Parts
Crankshaft Bearings and Oil Seals PGO Big Max
Artikel-Nr.: MF33.18600

Crankshaft Bearings and Oil Seals PGO Big Max

30,00 €
In stock
SKF
Bearing SKF 6203 C3 TN9 17x40x12mm polymer cage
Artikel-Nr.: SKF6203TN9/C3

Bearing SKF 6203 C3 TN9 17x40x12mm polymer cage

9,30 €
In stock
Piaggio
Small End Bearing 12x17x13 Piaggio
Artikel-Nr.: OE-PIA500501

Small End Bearing 12x17x13 Piaggio

9,20 €
In stock
Peugeot
Woodruff Key 3x2,5x13mm Peugeot horizontal
Artikel-Nr.: OE-PEU771874

Woodruff Key 3x2,5x13mm Peugeot horizontal

3,30 €
In stock
3,80 €
-13% Discount
Peugeot
Small End Bearing 12x16x16mm Peugeot horizontal
Artikel-Nr.: OE-PEU747120

Small End Bearing 12x16x16mm Peugeot horizontal

13,00 €
In stock
Sale
Malossi
Crankshaft Malossi MHR Team 44mm stroke / 90mm conrod Piaggio
Artikel-Nr.: M5316029

Crankshaft Malossi MHR Team 44mm stroke / 90mm conrod Piaggio

622,00 €
In stock
Malossi
Crankshaft Malossi MHR RHQ Peugeot horizontal
Artikel-Nr.: M5312781
1

Crankshaft Malossi MHR RHQ Peugeot horizontal

327,00 €
In stock
RRP
376,00 €
-13% Discount
Sale
Malossi
Crankshaft Malossi MHR Team Replica 85mm conrod Piaggio
Artikel-Nr.: 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
Artikel-Nr.: M539592

Crankshaft Malossi MHR RHQ Suzuki Katana AC before 1999

283,00 €
In stock
RRP
318,00 €
-11% Discount
Malossi
Crankshaft Malossi MHR RHQ 12mm pin 85mm conrod Minarelli horizontal
Artikel-Nr.: M538855

Crankshaft Malossi MHR RHQ 12mm pin 85mm conrod Minarelli horizontal

255,00 €
In stock
RRP
273,00 €
-7% Discount
Malossi
Crankshaft Malossi MHR RHQ Italjet Formula / Suzuki AP
Artikel-Nr.: M538631

Crankshaft Malossi MHR RHQ Italjet Formula / Suzuki AP

293,00 €
In stock
RRP
354,00 €
-17% Discount
Sale
Malossi
Crankshaft Malossi MHR RHQ Minarelli vertical
Artikel-Nr.: M537621

Crankshaft Malossi MHR RHQ Minarelli vertical

226,00 €
In stock
267,00 €
-15% Discount
Sale
2Fast
Small End Bearing 2Fast 14x17x17mm
Artikel-Nr.: TFAST154

Small End Bearing 2Fast 14x17x17mm

18,00 €
In stock
Sale
2Fast
Small End Bearing 2Fast 12x17x16mm
Artikel-Nr.: TFAST152

Small End Bearing 2Fast 12x17x16mm

15,00 €
In stock
Sale
2Fast
Connecting Rod 2Fast 95mm pin 18 x 37mm Minarelli
Artikel-Nr.: TFAST142

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

209,00 €
In stock
2Fast
Connecting Rod 2Fast 90mm pin 18 x 37mm Minarelli
Artikel-Nr.: TFAST136

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

209,00 €
In stock
2Fast
Connecting Rod 2Fast 100mm pin 18 x 37mm Minarelli
Artikel-Nr.: TFAST129

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

201,00 €
In stock
2Fast
Crankshaft 2Fast 39,3mm stroke / 85mm conrod Minarelli horizontal
Artikel-Nr.: TFAST084

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

458,00 €
In stock
2Fast
Connecting Rod 2Fast 95mm crankpin 18x41mm
Artikel-Nr.: TFAST065-ET01

Connecting Rod 2Fast 95mm crankpin 18x41mm

209,00 €
In stock
Polini
Crankshaft Polini Evolution P.R.E. 70cc Piaggio Zip
Artikel-Nr.: P210.0050

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

479,00 €
In stock
RRP
565,00 €
-15% Discount
2Fast
Crankshaft 2Fast 39,3mm stroke / 90mm conrod C-One / P.R.E.
Artikel-Nr.: TFAST070

Crankshaft 2Fast 39,3mm stroke / 90mm conrod C-One / P.R.E.

495,00 €
In stock
RRP
519,00 €
-5% Discount
Sale
Polini
Oil Seal Polini (crankshaft) P.R.E. 70cc Piaggio
Artikel-Nr.: 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
Artikel-Nr.: P285.0143

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

27,00 €
In stock
RRP
29,00 €
-7% Discount
Sale
Top Performances
Crankshaft Top Performances 44mm stroke / 85mm conrod Minarelli horizontal
Artikel-Nr.: T9925980

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

179,00 €
In stock
RRP
235,00 €
-24% Discount
Airsal
Crankshaft Airsal Racing Xtrem 85mm conrod / 45mm stroke Minarelli horizontal
Artikel-Nr.: C31073350

Crankshaft Airsal Racing Xtrem 85mm conrod / 45mm stroke Minarelli horizontal

218,00 €
In stock
RRP
240,00 €
-9% Discount
Top Performances
Crankshaft Top Performances 44mm stroke / 85mm conrod Piaggio
Artikel-Nr.: T9934920

Crankshaft Top Performances 44mm stroke / 85mm conrod Piaggio

179,00 €
In stock
RRP
231,00 €
-23% Discount
Malossi
Crankshaft Bearings Malossi 6204 C3H polymer cage 20x47x14mm
Artikel-Nr.: M6611566E

Crankshaft Bearings Malossi 6204 C3H polymer cage 20x47x14mm

26,50 €
In stock
2Fast
Crankshaft 2Fast 44mm stroke / 90mm conrod Minarelli horizontal
Artikel-Nr.: 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
Artikel-Nr.: OPU002

Crankshaft Ottopuntouno 8.1 85mm conrod 85mm Minarelli horizontal

520,00 €
In stock
RRP
589,00 €
-12% Discount
Sale
Malossi
Small End Bearing Malossi reinforced MHR 10x14x13mm
Artikel-Nr.: M663209.0B

Small End Bearing Malossi reinforced MHR 10x14x13mm

13,00 €
In stock
Sale
Malossi
Small End Bearing Malossi MHR
Artikel-Nr.: Malossi-Aguilles-renforcee
1

Small End Bearing Malossi MHR

8,70 €
In stock
Malossi
Crankshaft 47mm stroke 100mm conrod Malossi Testa Rossa FL100
Artikel-Nr.: M5318730

Crankshaft 47mm stroke 100mm conrod Malossi Testa Rossa FL100

678,00 €
In stock
RRP
815,00 €
-17% Discount
Sale
Malossi
Crankshaft Malossi MHR RHQ 12mm pin Minarelli horizontal
Artikel-Nr.: M538009

Crankshaft Malossi MHR RHQ 12mm pin Minarelli horizontal

257,00 €
In stock
RRP
273,00 €
-6% Discount
Malossi
Crankshaft Malossi MHR RHQ 10mm pin Minarelli horizontal
Artikel-Nr.: M537891

Crankshaft Malossi MHR RHQ 10mm pin Minarelli horizontal

246,00 €
In stock
RRP
273,00 €
-10% Discount
Malossi
Crankshaft Malossi MHR RHQ Piaggio
Artikel-Nr.: M537600
2

Crankshaft Malossi MHR RHQ Piaggio

262,00 €
In stock
RRP
284,00 €
-8% Discount
Naraku
Crankshaft Naraku Racing Hpc CPI / Keeway / China 2-stroke Euro 2
Artikel-Nr.: NK105.18

Crankshaft Naraku Racing Hpc CPI / Keeway / China 2-stroke Euro 2

107,00 €
In stock
112,00 €
-4% Discount
Doppler
Crankshaft Doppler Endurance Peugeot horizontal
Artikel-Nr.: CGN464917

Crankshaft Doppler Endurance Peugeot horizontal

165,00 €
In stock
RRP
179,00 €
-8% Discount
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scooter Crankshafts: performance and reliability with every revolution

The crankshaft is a core component of every scooter engine. Its job is to convert the linear motion of the piston into smooth rotational movement and transmit power through the transmission to the rear wheel. In doing so, it is exposed to extreme loads: combustion pressure, permanent friction, high temperatures and high engine speeds. A crankshaft is not a simple component, but is precisely engineered to withstand these conditions.

If the crankshaft fails, the engine comes to a standstill. It is the central axis of all engine movement: Piston, CVT and gearbox. Each revolution requires a perfect balance between the crank webs, connecting rods and bearings. If this balance is lost, vibrations occur, causing rough engine operation and potentially severe engine damage.

A reinforced crankshaft or racing crankshaft dies more than increase performance, it is crucial for durability and reliability, especially on tuned 50cc scooters.

In our online store you will find OEM crankshafts for standard replacement as well as sport and racing crankshafts for higher requirements. With a reliable crankshaft, the engine can deliver its full potential, providing stronger performance, more precise throttle response, and confidence in any riding situation.

And if you want to repair the crankshaft without spending too much money, you can find bearings, oil seals, gaskets, small end bearings, connecting rods, spacers, bushings, piston pins and much more in our spare parts catalog.

⇒ You can find the right part quickly and easily using our exploded views.

scooter Crankshaft types: features, advantages and Applications

Not all crankshafts are the same. Depending on the engine type, displacement and intended use, there are different product ranges offering the ideal balance between strength, performance, and price. Below is an overview to help you choose the right crankshaft.

✅ OEM crankshaft / standard

⇒ APPLICATION: OEM quality replacement for everyday scooters.

⇒ FEATURES:

  • Stroke: Original
  • Connecting rod: Original
  • Small end bearing: Standard
  • Balancing: Basic
  • Performance: Standard

⇒ ADVANTAGES: Inexpensive and easy to install (plug & play).

⇒ REQUIREMENTS: Replace oil seals and bearings.

⇒ RECOMMENDED Crankshafts: Motoforce, original crankshafts.

✅ Sport and racing crankshaft

⇒ APPLICATION: Everyday to sporty riding style or race track.

⇒ FEATURES:

  • Reinforced crankshaft
  • Webs: Full-circle, with inserts made from different materials
  • Stroke: Original - long
  • Connecting rod: Original / variable
  • Small end bearing: reinforced
  • Balancing: optimized
  • Performance: improved

⇒ ADVANTAGES: Higher reliability, better pre-compression, higher torque.

⇒ REQUIREMENTS: Suitable bearings. If stroke or rod length differs from stock, crankcase modification is required.

⇒ RECOMMENDED Crankshafts: Stage6 HPC MK2, Malossi MHR, Polini For Race.

✅ High-end crankshaft

⇒ APPLICATION: Exclusively for racing use.

⇒ FEATURES:

  • Extremely reinforced crankshaft
  • Crank webs: full circle, made from high-quality steel
  • Stroke: up to 50 mm
  • Connecting rod: reinforced and forged
  • Small end bearings: HQ-reinforced (often silver-plated)
  • Balancing: High precision with inserts to optimize performance (more or less weight affects torque and engine speed)
  • Performance: maximum torque, power and durability

⇒ ADVANTAGES: Superior durability, linear throttle response and high-end performance.

⇒ REQUIREMENTS: Crankcase machining (depending on model), high-end components and bearings, installation by qualified personnel.

⇒ RECOMMENDED crankshafts: Stage6 R/T, 2Fast, Ottopuntouno, Polini PRE.

large Selection: crankshafts, spare parts and complete tuning kits

We stock original crankshafts (Piaggio, Aprilia, Derbi, Vespa, Gilera, Yamaha / MBK, Peugeot, SYM, GY6)as well as affordable aftermarket versions from brands like Motoforce through to exclusive parts for scooter tuning.

When increasing displacement to 70, 88, or 100 cc, the stock crankshaft is usually no longer sufficient. The solution is to upgrade to a reinforced crankshaft or a long-stroke crankshaft capable of handling higher torque and higher RPM reliably. Without a suitable crankshaft, both performance and engine longevity will suffer.

We stock racing and high-end crankshafts from Stage6 R/T, Malossi, Polini, 2Fast, Metrakit, Voca, Athena, Italkit, Airsal, Top Performances and many other renowned brands.

Why replace the crankshaft?

A crankshaft operates permanently under extreme conditions: high temperatures, continuous load, and lubrication that is not always ideal. Over time—or due to poor maintenance—it wears out and can fail. When this happens, the damage is often not limited to the crankshaft alone; the cylinder and other critical components can also be affected, resulting in far higher repair costs than a timely crankshaft replacement.

Crankshaft failure is very common on 50cc scooters. In these cases, installing a reinforced crankshaft is highly recommended. For setups with 80, 88, or 100 cc, a long-stroke crankshaft (43–45 mm) is required.

Assembly tips

  • Always use new bearings and seals
  • Check perfect alignment ⇒ prevents vibrations and damage
  • If you have no experience, leave the installation to a specialist or professional workshop

Crankshaft Maintenance and inspection

Each crankshaft type requires proper care to ensure long-term reliability. During regular maintenance work, such as piston replacement, bearing clearances and tolerances should be checked and kept within specified limits.

Pay close attention to unusual noises or vibrations. These are usually the first signs of wear on the crankshaft or bearings. If bearing noise becomes audible or vibrations increase, the engine should be inspected immediately to prevent serious damage.

FAQ - Frequently asked questions about crankshafts

⇒ Do I have to replace the crankshaft when increasing displacement? Yes. The stock crankshaft cannot reliably handle higher torque and increased RPM. A reinforced or racing crankshaft is required.

⇒ Can I replace the crankshaft myself? Crankshaft replacement is a demanding job and requires special tools. If you lack experience, professional installation is strongly recommended. Alternatively, strictly follow the manufacturer’s instructions or an appropriate installation guide.

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