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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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MotoForce
Crankshaft Motoforce 22 Zähne GY6 50cc 4T
Artikel-Nr.: 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
Artikel-Nr.: MF30.13400

Crankshaft Motoforce Peugeot / Sym 50cc 4T

65,50 €
In stock
RRP
68,50 €
-4% Discount
MotoForce
Woodruff Key ignition Peugeot
Artikel-Nr.: MF60.17518
1

Woodruff Key ignition Peugeot

3,20 €
In stock
RRP
3,70 €
-14% Discount
MotoForce
Small End Bearing reinforced
Artikel-Nr.: MF33000_MF_AGUILLES

Small End Bearing reinforced

2,40 €
In stock
6,60 €
-64% Discount
MotoForce
Crankshaft Motoforce Peugeot horizontal
Artikel-Nr.: MF30.17700
3

Crankshaft Motoforce Peugeot horizontal

53,00 €
In stock
MotoForce
Crankshaft Bearing Set Morini 50cc
Artikel-Nr.: MF33.15003
1

Crankshaft Bearing Set Morini 50cc

32,50 €
In stock
MotoForce
Woodruff Key ignition Minarelli / Piaggio / China 2-stroke
Artikel-Nr.: MF60.16615

Woodruff Key ignition Minarelli / Piaggio / China 2-stroke

1,10 €
In stock
RRP
1,20 €
-8% Discount
MotoForce
Crankshaft reinforced MotoForce Peugeot horizontal
Artikel-Nr.: MF30.17703

Crankshaft reinforced MotoForce Peugeot horizontal

99,00 €
In stock
Neu
MotoForce
Crankshaft reinforced MotoForce Peugeot TKR after 2004 with compressor
Artikel-Nr.: MF30.17501

Crankshaft reinforced MotoForce Peugeot TKR after 2004 with compressor

79,00 €
In stock
MotoForce
Crankshaft Seals Peugeot Kisbee
Artikel-Nr.: MF96.00039

Crankshaft Seals Peugeot Kisbee

2,60 €
In stock
MotoForce
Crankshaft Bearing Set Minarelli
Artikel-Nr.: MF33.16607

Crankshaft Bearing Set Minarelli

22,00 €
In stock
MotoForce
Crankshaft Bearing Set Piaggio
Artikel-Nr.: MF33.14009

Crankshaft Bearing Set Piaggio

35,50 €
In stock
MotoForce
Crankshaft Motoforce Peugeot vertical
Artikel-Nr.: MF30.17500

Crankshaft Motoforce Peugeot vertical

63,50 €
In stock
65,00 €
-2% Discount
MotoForce
Crankshaft reinforced MotoForce Minarelli vertical
Artikel-Nr.: MF30.16801
1

Crankshaft reinforced MotoForce Minarelli vertical

59,50 €
In stock
MotoForce
Crankshaft Motoforce Minarelli vertical
Artikel-Nr.: MF30.16800

Crankshaft Motoforce Minarelli vertical

48,00 €
In stock
MotoForce
Crankshaft verstärkt MotoForce Minarelli horizontal
Artikel-Nr.: MF30.16601
2

Crankshaft verstärkt MotoForce Minarelli horizontal

62,50 €
In stock
MotoForce
Crankshaft Motoforce Minarelli horizontal
Artikel-Nr.: MF30.16600

Crankshaft Motoforce Minarelli horizontal

38,50 €
In stock
MotoForce
Crankshaft verstärkt MotoForce Piaggio
Artikel-Nr.: MF30.14001
2

Crankshaft verstärkt MotoForce Piaggio

56,50 €
In stock
RRP
58,50 €
-3% Discount
MotoForce
Crankshaft Motoforce Piaggio / Gilera
Artikel-Nr.: MF30.14000
1

Crankshaft Motoforce Piaggio / Gilera

35,50 €
In stock
RRP
37,00 €
-4% Discount
MotoForce
Oil Seals for crankshaft Peugeot vertical
Artikel-Nr.: MF96.00032

Oil Seals for crankshaft Peugeot vertical

6,40 €
In stock
RRP
6,50 €
-2% Discount
MotoForce
Oil Seals for crankshaft Piaggio
Artikel-Nr.: MF96.00031

Oil Seals for crankshaft Piaggio

5,70 €
In stock
RRP
6,50 €
-12% Discount
MotoForce
Oil Seals for crankshaft Minarelli
Artikel-Nr.: MF96.00030

Oil Seals for crankshaft Minarelli

6,50 €
In stock
RRP
7,10 €
-8% Discount
MotoForce
Crankshaft Motoforce Peugeot horizontal w/o pump
Artikel-Nr.: MF30.17702
1

Crankshaft Motoforce Peugeot horizontal w/o pump

67,00 €
In stock
Stage6
Crankshaft Stage6 HPC PGO Big Max / T-Rex
Artikel-Nr.: S6-8018600

Crankshaft Stage6 HPC PGO Big Max / T-Rex

136,00 €
In stock
RRP
204,00 €
-33% Discount
Sale
Stage6
Crankshaft Stage6 Pro Replica 12mm pin Minarelli horizontal
Artikel-Nr.: S6-8116600/12
1

Crankshaft Stage6 Pro Replica 12mm pin Minarelli horizontal

95,00 €
In stock
RRP
140,00 €
-32% Discount
Sale
Stage6
Small End Bearing HQ Stage6
Artikel-Nr.: S6-8020_SIZES
3

Small End Bearing HQ Stage6

8,00 €
In stock
11,00 €
-27% Discount
Stage6
Crankshaft HPC MK2 Piston Pin Stage6 12mm Yamaha BW's
Artikel-Nr.: S6-8016805/12

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

184,00 €
In stock
RRP
204,00 €
-10% Discount
Stage6
Crankshaft Stage6 Pro Replica Peugeot horizontal
Artikel-Nr.: S6-8117800
3

Crankshaft Stage6 Pro Replica Peugeot horizontal

88,00 €
In stock
RRP
129,00 €
-32% Discount
Sale
Stage6
Crankshaft Stage6 Pro Replica 10mm pin Minarelli horizontal
Artikel-Nr.: S6-8116600
1

Crankshaft Stage6 Pro Replica 10mm pin Minarelli horizontal

129,00 €
In stock
Stage6
Crankshaft Stage6 Pro Replica 10mm pin Minarelli vertical
Artikel-Nr.: S6-8116800

Crankshaft Stage6 Pro Replica 10mm pin Minarelli vertical

97,00 €
In stock
RRP
129,00 €
-25% Discount
Sale
Stage6
Crankshaft Stage6 Pro Replica Piaggio (NRG / Gilera Stalker)
Artikel-Nr.: S6-8114000

Crankshaft Stage6 Pro Replica Piaggio (NRG / Gilera Stalker)

88,00 €
In stock
RRP
129,00 €
-32% Discount
Sale
Stage6
Crankshaft Stage6 HPC MK2 10mm pin Minarelli horizontal
Artikel-Nr.: S6-8016601
2

Crankshaft Stage6 HPC MK2 10mm pin Minarelli horizontal

193,00 €
In stock
Stage6
Small End Bearing HQ Stage6 silver 12-to-10mm adapter 10x17x13mm
Artikel-Nr.: S6-802055

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

13,00 €
In stock
RRP
19,00 €
-32% Discount
Sale
Stage6
Stage6 Crankshaft Nut M12x1.25mm
Artikel-Nr.: S6-79140ET03

Stage6 Crankshaft Nut M12x1.25mm

4,40 €
In stock
RRP
4,70 €
-6% Discount
Stage6
Woodruff Key offset (advanced ignition) Stage6 Minarelli
Artikel-Nr.: S6-80516601

Woodruff Key offset (advanced ignition) Stage6 Minarelli

7,90 €
In stock
Stage6 R/T
Crank Web Pads aluminium Stage6 R/T for HIGH BALANCE crankshafts, Piaggio
Artikel-Nr.: 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 Piaggio / Vespa
Artikel-Nr.: S6-7914096

Crankshaft Stage6 R/T 44mm stroke / 90mm conrod Piaggio / Vespa

286,00 €
In stock
RRP
423,00 €
-32% Discount
Sale
Stage6 R/T
Crankshaft Stage6 R/T 44mm stroke / 90mm conrod Minarelli
Artikel-Nr.: S6-7916605

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

286,00 €
In stock
RRP
423,00 €
-32% Discount
Sale
Stage6 R/T
Crankshaft Stage6 R/T 85mm conrod 12mm pin Minarelli horizontal
Artikel-Nr.: S6-7916601

Crankshaft Stage6 R/T 85mm conrod 12mm pin Minarelli horizontal

183,00 €
In stock
RRP
269,00 €
-32% Discount
Sale
Stage6 R/T
Crankshaft Stage6 R/T 85mm conrod Piaggio
Artikel-Nr.: S6-7914001
1

Crankshaft Stage6 R/T 85mm conrod Piaggio

180,00 €
In stock
RRP
269,00 €
-33% Discount
Sale
Stage6 R/T
Oil Seals crankshaft + water pump Stage6 R/T Minarelli LC
Artikel-Nr.: S6-8041669

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

20,00 €
In stock
Stage6 R/T
Oil Seals crankshaft + water pump Stage6 R/T Piaggio LC
Artikel-Nr.: S6-8041409

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

17,00 €
In stock
RRP
22,00 €
-23% Discount
Sale
Stage6 R/T
Oil Seal Stage6 R/T FKM 20x30x7mm
Artikel-Nr.: S6-79ET001

Oil Seal Stage6 R/T FKM 20x30x7mm

7,80 €
In stock
RRP
8,60 €
-9% Discount
Stage6 R/T
Crankshaft Oil Seals Stage6 R/T NBR Peugeot Speedfight 3 + 4
Artikel-Nr.: S6-8041781

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

13,00 €
In stock
RRP
17,00 €
-24% Discount
Sale
Stage6 R/T
Crankshaft Oil Seals Stage6 R/T NBR Peugeot Speedfight 1 + 2
Artikel-Nr.: S6-8041751

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

13,00 €
In stock
RRP
17,00 €
-24% Discount
Sale
Stage6 R/T
Crankshaft Oil Seals Stage6 R/T FKM Minarelli
Artikel-Nr.: S6-8041661

Crankshaft Oil Seals Stage6 R/T FKM Minarelli

17,00 €
In stock
Stage6 R/T
Crankshaft Oil Seals Stage6 R/T FKM Piaggio Zip
Artikel-Nr.: 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 cage Peugeot vertical
Artikel-Nr.: S6-8031751/TN9

Crankshaft Bearing Set Stage6 R/T C4 polymer cage Peugeot vertical

44,00 €
In stock
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 steel cage Peugeot vertical
Artikel-Nr.: S6-8031751/MET

Crankshaft Bearing Set Stage6 R/T C4 steel cage Peugeot vertical

38,00 €
In stock
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 polymer cage Peugeot horizontal
Artikel-Nr.: S6-8031780/TN9

Crankshaft Bearing Set Stage6 R/T C4 polymer cage Peugeot horizontal

27,00 €
In stock
RRP
39,50 €
-32% Discount
Sale
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 steel cage Peugeot horizontal
Artikel-Nr.: S6-8031780/MET
3

Crankshaft Bearing Set Stage6 R/T C4 steel cage Peugeot horizontal

37,00 €
In stock
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 polymer cage Peugeot vertical Euro 1
Artikel-Nr.: S6-8031750/TN9

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

38,00 €
In stock
RRP
48,50 €
-22% Discount
Sale
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 steel cage Peugeot vertical Euro 1
Artikel-Nr.: S6-8031750/MET

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

44,00 €
In stock
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 polymer cage Minarelli vertical
Artikel-Nr.: S6-8031660/TN9

Crankshaft Bearing Set Stage6 R/T C4 polymer cage Minarelli vertical

34,00 €
In stock
RRP
39,50 €
-14% Discount
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 steel cage Minarelli
Artikel-Nr.: S6-8031660/MET

Crankshaft Bearing Set Stage6 R/T C4 steel cage Minarelli

37,00 €
In stock
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 polymer cage Piaggio Zip
Artikel-Nr.: S6-8031400/TN9

Crankshaft Bearing Set Stage6 R/T C4 polymer cage Piaggio Zip

50,50 €
In stock
Stage6 R/T
Crankshaft Bearing Set Stage6 R/T C4 steel cage Piaggio Zip
Artikel-Nr.: S6-8031400/MET

Crankshaft Bearing Set Stage6 R/T C4 steel cage Piaggio Zip

47,50 €
In stock
2Fast
Crankcase Spacer 5mm 2Fast Minarelli horizontal
Artikel-Nr.: TFAST122

Crankcase Spacer 5mm 2Fast Minarelli horizontal

33,00 €
In stock
Sale
Polini
Small End Bearing Polini Big Evolution 13x17x17,3mm Piaggio / Minarelli
Artikel-Nr.: 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
Artikel-Nr.: P280.00_SMALLENDBEARING

Small end bearing Polini

8,40 €
In stock
10,00 €
-16% 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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