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Crankshafts

(65 products)
Crankshaft Crankshafts Bearings and Oil Seals Small End Bearings Crankshaft Accessories
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65
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Tuning level
Original Sport Racing High-end
Piston pin
12 mm 13 mm 14 mm
Stroke
Original 39,7 mm 42 mm 43 mm 44 mm 44,8 mm 44,9 mm 45 mm 47 mm 48 mm
Conrod length
Standard 85 mm 90 mm 95 mm 98 mm 100 mm
Brand
2Fast Airsal Barikit Bidalot Conti Doppler Italkit Jasil Malossi Metrakit MotoForce MotoForce Racing MVT Parmakit Polini Stage6 Stage6 R/T Top Performances Voca Racing
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MotoForce
Crankshaft verstärkt MotoForce 20mm Lagersitz AM6
Article no.: MF30.11001
1

Crankshaft verstärkt MotoForce 20mm Lagersitz AM6

58,50 €
In stock
RRP
69,00 €
-15% Discount
MotoForce
Crankshaft verstärkt MotoForce Derbi Euro 3 / 4
Article no.: MF30.19300

Crankshaft verstärkt MotoForce Derbi Euro 3 / 4

55,50 €
In stock
MotoForce
Crankshaft Motoforce Derbi Euro 2
Article no.: MF30.12500

Crankshaft Motoforce Derbi Euro 2

47,00 €
In stock
RRP
54,00 €
-13% Discount
MotoForce
Crankshaft Motoforce AM6
Article no.: MF30.11000
1

Crankshaft Motoforce AM6

40,00 €
In stock
RRP
56,50 €
-29% Discount
Sale
Stage6
Crankshaft Stage6 HPC Derbi Euro 3 / 4
Article no.: S6-8019300

Crankshaft Stage6 HPC Derbi Euro 3 / 4

199,00 €
In stock
RRP
221,00 €
-10% Discount
Stage6
Crankshaft Stage6 Pro Replica Derbi Euro 3 / 4
Article no.: S6-8119300

Crankshaft Stage6 Pro Replica Derbi Euro 3 / 4

65,00 €
In stock
RRP
143,00 €
-55% Discount
Sale
Stage6
Crankshaft Stage6 Pro Replica AM6
Article no.: S6-8118800
1

Crankshaft Stage6 Pro Replica AM6

53,00 €
In stock
RRP
148,00 €
-64% Discount
Sale
Stage6
Albero motore Stage6 HPC Derbi Euro 3 / Euro 4 corsa 44mm
Article no.: S6-8019309

Albero motore Stage6 HPC Derbi Euro 3 / Euro 4 corsa 44mm

150,00 €
In stock
RRP
221,00 €
-32% Discount
Sale
Stage6
Crankshaft Stage6 HPC Derbi Euro 2
Article no.: S6-8019200

Crankshaft Stage6 HPC Derbi Euro 2

134,00 €
In stock
RRP
221,00 €
-39% Discount
Sale
Stage6 R/T
Crankshaft Stage6 R/T Derbi Euro 3 / 4
Article no.: S6-7919301

Crankshaft Stage6 R/T Derbi Euro 3 / 4

249,00 €
In stock
RRP
276,00 €
-10% Discount
Stage6 R/T
Crankshaft Stage6 R/T 44mm stroke / 95mm conrod Derbi Euro 3 / 4
Article no.: S6-7919305

Crankshaft Stage6 R/T 44mm stroke / 95mm conrod Derbi Euro 3 / 4

236,00 €
In stock
RRP
421,00 €
-44% Discount
Sale
Stage6 R/T
Crankshaft Stage6 R/T 44mm stroke / 90mm conrod AM6
Article no.: S6-7918805

Crankshaft Stage6 R/T 44mm stroke / 90mm conrod AM6

254,00 €
In stock
RRP
421,00 €
-40% Discount
Sale
Jasil
Crankshaft Top Racing Yamaha DT MX / RD MX
Article no.: JA55102

Crankshaft Top Racing Yamaha DT MX / RD MX

105,00 €
In stock
RRP
116,60 €
-10% Discount
Malossi
Crankshaft Malossi MHR Team 47mm stroke AM6
Article no.: M5318897

Crankshaft Malossi MHR Team 47mm stroke AM6

732,00 €
In stock
756,00 €
-3% Discount
Sale
Malossi
Crankshaft Malossi MHR RHQ Derbi Euro 3 / 4
Article no.: M5312990

Crankshaft Malossi MHR RHQ Derbi Euro 3 / 4

359,00 €
In stock
RRP
397,00 €
-10% Discount
2Fast
Crankshaft 2Fast 44,9mm stroke / 90mm conrod AM6
Article no.: TFAST085

Crankshaft 2Fast 44,9mm stroke / 90mm conrod AM6

438,00 €
In stock
460,00 €
-5% Discount
Sale
Bidalot
Crankshaft Bidalot RF50WR 39,7mm stroke / 85mm conrod AM6
Article no.: BID12100568

Crankshaft Bidalot RF50WR 39,7mm stroke / 85mm conrod AM6

248,00 €
In stock
251,00 €
-1% Discount
Sale
Top Performances
Crankshaft Top Performances 44mm stroke Derbi Euro 3 / 4
Article no.: T9930210

Crankshaft Top Performances 44mm stroke Derbi Euro 3 / 4

193,00 €
In stock
RRP
267,00 €
-28% Discount
Italkit
Crankshaft Italkit 44,9mm stroke Derbi Euro 2
Article no.: IKCB121452

Crankshaft Italkit 44,9mm stroke Derbi Euro 2

208,00 €
In stock
225,00 €
-8% Discount
Sale
Bidalot
Crankshaft Bidalot RF50WR 39,7mm stroke / 85mm conrod Derbi Euro 3 / 4
Article no.: BID12100588

Crankshaft Bidalot RF50WR 39,7mm stroke / 85mm conrod Derbi Euro 3 / 4

248,00 €
In stock
267,00 €
-7% Discount
Sale
Bidalot
Crankshaft Bidalot RF50WR 39,7mm stroke / 85mm conrod Derbi Euro 2
Article no.: BID12100578

Crankshaft Bidalot RF50WR 39,7mm stroke / 85mm conrod Derbi Euro 2

270,00 €
In stock
RRP
280,00 €
-4% Discount
Bidalot
Crankshaft Bidalot RF 44,9mm stroke / 90mm conrod Derbi Euro 3 / 4
Article no.: BID12100886

Crankshaft Bidalot RF 44,9mm stroke / 90mm conrod Derbi Euro 3 / 4

248,00 €
In stock
RRP
280,00 €
-11% Discount
Sale
Top Performances
Crankshaft AM6 TPR Factory 100cc stroke 47mm / conrod 98mm
Article no.: T99AL47AM00

Crankshaft AM6 TPR Factory 100cc stroke 47mm / conrod 98mm

647,00 €
In stock
Top Performances
Crankshaft Top Performances 44mm stroke AM6
Article no.: T9920410

Crankshaft Top Performances 44mm stroke AM6

194,00 €
In stock
RRP
265,00 €
-27% Discount
Airsal
Crankshaft Airsal Racing Xtrem 45mm stroke Derbi Euro 3 / 4
Article no.: C31087550

Crankshaft Airsal Racing Xtrem 45mm stroke Derbi Euro 3 / 4

232,00 €
In stock
RRP
242,00 €
-4% Discount
Airsal
Crankshaft Airsal Racing Xtrem 45mm stroke Derbi Euro 2
Article no.: C31087650

Crankshaft Airsal Racing Xtrem 45mm stroke Derbi Euro 2

211,00 €
In stock
RRP
242,00 €
-13% Discount
Airsal
Crankshaft Airsal Racing Xtrem 45mm stroke AM6
Article no.: C31137350

Crankshaft Airsal Racing Xtrem 45mm stroke AM6

227,00 €
In stock
Malossi
Crankshaft Malossi MHR Team 47mm stroke Derbi
Article no.: M5318895

Crankshaft Malossi MHR Team 47mm stroke Derbi

726,00 €
In stock
RRP
808,00 €
-10% Discount
MotoForce Racing
Crankshaft stroke 44 mm MotoForce Racing AM6
Article no.: MF30.11003

Crankshaft stroke 44 mm MotoForce Racing AM6

119,00 €
In stock
New
Parmakit
Crankshaft stroke 44mm Parmakit Minarelli P6
Article no.: PM53488.14

Crankshaft stroke 44mm Parmakit Minarelli P6

297,00 €
In stock
MVT
Crankshaft MVT SC 44,8mm stroke Derbi Euro 3 / 4
Article no.: MVT-VI32

Crankshaft MVT SC 44,8mm stroke Derbi Euro 3 / 4

236,00 €
In stock
RRP
287,00 €
-18% Discount
Sale
MVT
Crankshaft MVT S-Race stroke 43mm stroke AM6
Article no.: MVT-VI17

Crankshaft MVT S-Race stroke 43mm stroke AM6

118,00 €
In stock
RRP
152,00 €
-22% Discount
Sale
MVT
Crankshaft MVT SC 44,8mm stroke / 90mm conrod AM6
Article no.: MVT-VI31

Crankshaft MVT SC 44,8mm stroke / 90mm conrod AM6

287,00 €
In stock
Doppler
Crankshaft Doppler Endurance Derbi Euro 2
Article no.: CGN367238

Crankshaft Doppler Endurance Derbi Euro 2

154,00 €
In stock
RRP
168,00 €
-8% Discount
Sale
Doppler
Crankshaft Doppler Endurance AM6
Article no.: CGN367223

Crankshaft Doppler Endurance AM6

139,00 €
In stock
RRP
168,00 €
-17% Discount
Sale
Conti
Crankshaft Conti CHR Derbi Euro 3 / 4
Article no.: CGN518746

Crankshaft Conti CHR Derbi Euro 3 / 4

188,00 €
In stock
Voca Racing
Crankshaft Voca HQ Racing 43mm stroke Yamaha DT50
Article no.: VCR-RD70130.43.HQ

Crankshaft Voca HQ Racing 43mm stroke Yamaha DT50

175,00 €
In stock
RRP
215,00 €
-19% Discount
Doppler
Crankshaft Doppler Endurance Derbi Euro 3 / 4
Article no.: CGN468210

Crankshaft Doppler Endurance Derbi Euro 3 / 4

154,00 €
In stock
RRP
168,00 €
-8% Discount
Sale
Barikit
Crankshaft Barikit Racing Derbi Euro 2 (EBS)
Article no.: BAR-CIG-44

Crankshaft Barikit Racing Derbi Euro 2 (EBS)

117,00 €
In stock
126,00 €
-7% Discount
Sale
Barikit
Crankshaft Barikit Racing Derbi Euro 2
Article no.: BAR-CIG-24

Crankshaft Barikit Racing Derbi Euro 2

117,00 €
In stock
123,00 €
-5% Discount
Sale
Barikit
Crankshaft Barikit Racing AM6
Article no.: BAR-CIG-29

Crankshaft Barikit Racing AM6

134,00 €
In stock
Barikit
Crankshaft Barikit Racing Derbi Euro 3 (D50B0)
Article no.: BAR-CIG-60

Crankshaft Barikit Racing Derbi Euro 3 (D50B0)

139,00 €
In stock
RRP
153,00 €
-9% Discount
Sale
MotoForce Racing
Crankshaft Motoforce Racing Derbi Euro 2
Article no.: MF30.12502
1

Crankshaft Motoforce Racing Derbi Euro 2

100,00 €
In stock
RRP
116,00 €
-14% Discount
Sale
MotoForce Racing
Crankshaft Motoforce Racing AM6
Article no.: MF30.11002
1

Crankshaft Motoforce Racing AM6

113,00 €
In stock
Metrakit
Crankshaft Metrakit Handmade Derbi Euro 3 / 4
Article no.: MK850D2512
1

Crankshaft Metrakit Handmade Derbi Euro 3 / 4

76,00 €
In stock
RRP
102,00 €
-25% Discount
Sale
Stage6
Crankshaft Stage6 HPC 45mm stroke / 90mm conrod AM6
Article no.: S6-8018810
1

Crankshaft Stage6 HPC 45mm stroke / 90mm conrod AM6

219,00 €
In stock soon
RRP
243,00 €
-10% Discount
Stage6
Crankshaft Stage6 HPC 45mm stroke Derbi Euro 2
Article no.: S6-8019210

Crankshaft Stage6 HPC 45mm stroke Derbi Euro 2

219,00 €
In stock soon
RRP
243,00 €
-10% Discount
Stage6
Crankshaft Stage6 HPC 45mm stroke Derbi Euro 3 / 4
Article no.: S6-8019310

Crankshaft Stage6 HPC 45mm stroke Derbi Euro 3 / 4

219,00 €
In stock soon
RRP
243,00 €
-10% Discount
Stage6
Crankshaft Stage6 HPC MK2 AM6
Article no.: S6-8018801
1

Crankshaft Stage6 HPC MK2 AM6

225,00 €
In stock soon
RRP
250,00 €
-10% Discount
Stage6
Crankshaft Stage6 HPC 44mm stroke AM6
Article no.: S6-8018809

Crankshaft Stage6 HPC 44mm stroke AM6

199,00 €
In stock soon
RRP
221,00 €
-10% Discount
Stage6 R/T
Crankshaft Stage6 R/T AM6
Article no.: S6-7918801

Crankshaft Stage6 R/T AM6

249,00 €
In stock soon
RRP
276,00 €
-10% Discount
Italkit
Crankshaft Italkit 44mm stroke AM6
Article no.: IKCB4410R

Crankshaft Italkit 44mm stroke AM6

247,00 €
In stock soon
Italkit
Crankshaft Italkit 44,9mm stroke Derbi Euro 3 / 4
Article no.: IKCB122452

Crankshaft Italkit 44,9mm stroke Derbi Euro 3 / 4

251,00 €
In stock soon
Bidalot
Crankshaft Bidalot Racing Factory 44,9mm stroke AM6
Article no.: BID12100866

Crankshaft Bidalot Racing Factory 44,9mm stroke AM6

269,00 €
In stock soon
Bidalot
Crankshaft Bidalot RF 48mm stroke / 95mm conrod Derbi Euro 3 / 4
Article no.: BID12100986

Crankshaft Bidalot RF 48mm stroke / 95mm conrod Derbi Euro 3 / 4

350,00 €
In stock soon
Bidalot
Crankshaft Bidalot RF 48mm stroke / 95mm conrod AM6
Article no.: BID12100966

Crankshaft Bidalot RF 48mm stroke / 95mm conrod AM6

375,00 €
In stock soon
2Fast
Crankshaft 2Fast 47mm stroke / 95mm conrod Derbi Euro 3 / 4
Article no.: TFAST053

Crankshaft 2Fast 47mm stroke / 95mm conrod Derbi Euro 3 / 4

504,00 €
In stock soon
2Fast
Crankshaft 2Fast 47mm stroke / 95mm conrod AM6
Article no.: TFAST051

Crankshaft 2Fast 47mm stroke / 95mm conrod AM6

465,00 €
In stock soon
MVT
Crankshaft MVT S-Race Derbi Euro 3 / 4
Article no.: MVT-VI13

Crankshaft MVT S-Race Derbi Euro 3 / 4

100,00 €
In stock soon
RRP
118,00 €
-15% Discount
Conti
Crankshaft Conti CHR AM6
Article no.: CGN518745

Crankshaft Conti CHR AM6

197,00 €
In stock soon
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12

Crankshaft

The crankshaft is a central component of every engine. It converts the linear motion of the piston into a consistent rotational movement. In doing so, it is exposed to high loads from combustion, friction, and temperatures. Weight and balancing also influence performance.

A defective crankshaft can cause significant damage, often affecting the crankcases as well. It should therefore always be in perfect condition and match the engine’s performance level.

To make selection easier, especially for mopeds, scooters, and 50cc gear bikes, we have divided crankshafts into performance categories. The key information can be found below.

Our crankshaft categories

As with cylinders and exhausts, which largely determine engine performance, we distinguish four categories: Original, Sport, Racing, and High-End.

✅ Crankshaft Original

→ FEATURES: Matches the manufacturer’s original specifications

→ ADVANTAGES: Cost-effective, easy installation without modifications

→ REQUIREMENTS: Replacement of bearings and seals recommended

→ WELL-KNOWN BRANDS: Motoforce, Standard Parts, Yamaha, Rieju

✅ Crankshaft Sport & Racing

→ FEATURES: Reinforced, optimized webs, special materials, stroke matched to cylinder size

→ ADVANTAGES: Increased reliability, improved pre-compression, improved torque and RPM range

→ REQUIREMENTS: Reinforced bearings. If stroke or connecting rod differ, modifications to the engine cases are required.

→ BRANDS: Stage6, Stage6 R/T, Polini, Malossi, Motoforce Racing, MVT, Airsal

✅ Crankshaft High-End

→ FEATURES: Heavily reinforced, optimized balancing, forged connecting rod, reinforced needle bearings, precise balancing with inserts, adapted stroke (stroker)

→ ADVANTAGES: High durability, designed for high performance, optimized output

→ REQUIREMENTS: Engine case machining depending on the model, reinforced bearings, installation by a specialist recommended

→ SPECIALIZED BRANDS: Stage6 R/T, 2Fast, Top Performances, Ottopuntouno, Polini

Summary:

As performance and displacement increase, a reinforced crankshaft becomes more important. Many manufacturers design their crankshafts to match their cylinders. Combining both ensures a balanced setup in terms of power, torque, and durability.

Why replace the crankshaft?

Like most rotating components, the crankshaft is a typical wear part. Technically, bearings, journals, and the small end bearing are affected the most. These can be replaced individually, but the process is complex and requires special tools, so the entire crankshaft is often replaced.

Typical signs include increased vibrations or unusual noises. Experienced mechanics may also notice a grinding sound. In such cases, the crankshaft should be replaced.

When tuning, the original crankshaft should be replaced with a reinforced version.

Crankshaft installation

Always use new bearings and seals. Proper alignment is important to avoid vibrations and damage.

IMPORTANT: If you don't have any experience, installation should be carried out by a professional workshop.

Crankshaft maintenance

Regular checks and timely replacement of bearings and seals are essential. Each time the engine is opened, for example during a piston replacement, tolerances should be checked.

Watch for unusual noises or vibrations, as these are often early signs of wear. If bearings make noise or the engine vibrates, action should be taken early to prevent damage to the cylinder or engine cases.

Crankshafts for scooters, mopeds, and 50cc geared mopeds: our range

In our shop, you will find original and reinforced crankshafts for common engines such as Minarelli AM6, Derbi Euro 2 / Euro 3, Minarelli horizontal and vertical, Piaggio, Peugeot, Peugeot 103, and AV7 / AV10, as well as others, including less common engines like Morini, GY6, or Sachs.

This also covers many popular models, with suitable parts for Rieju MRT, Beta RR, Derbi Senda, Yamaha Aerox, Piaggio Zip, Peugeot 103, or Piaggio Ciao, among others.

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