Standard Crankshaft in OEM quality - ideal for engine overhauls and discreet tuning on Vespa Smallframe.
The Crankshaft is the heart of the Engine and is subject to constant high stress. Bearing and shaft seal seats are often worn or connecting rod bearings are worn out on Engines with many kilometers or increased performance. We therefore recommend replacing the Crankshaft as part of a major engine service.
Our range only includes high-quality standard Crankshafts from MAZZUCCHELLI and TAMENI (Made in Italy, Milan area) as well as JASIL (also known as TOP RACING). The appearance, quality and timing of all these manufacturers correspond to the PIAGGIO original. TAMENI Crankshafts also impress with their very good compression ratio. Individual versions - such as ETS and PK automatic shafts - are original PIAGGIO shafts. All Crankshafts are supplied including the upper connecting rod bearing.
- Timing and workmanship close to OEM (equivalent to PIAGGIO original)
- High-quality manufacturers: MAZZUCCHELLI, TAMENI, JASIL/TOP RACING
- Highlight ETS Shaft with standard 126° intake timing and reinforced LIMA Seat
ETS Shaft as a highlight
The ETS Shaft stands out in particular: With an intake timing of 126° as standard and a significantly Reinforced, thicker Bearing and Oil Seal Seat on the alternator side. For Insert in V50/PK/PV/ET3 Crankcases, a conversion bearing/oil seal is required.
Differentiation from the Racing Crankshaft
A Racing Crankshaft is recommended for sportier setups: longer intake times, frequently polished cutter connecting rod and a higher quality silver bearing. However, a high-quality standard shaft is usually perfectly adequate for engine overhauls and subtle tuning.
Technical details
- Stroke: 43 mm
- Conrod: 87 mm
- Lima cheek: Ø 82 mm
- Rotary valve cheek: Ø 87 mm
- Shaft seal seat: 20 mm
- Bearing seat: 20 mm
- Cone: blunt/thick, M12
- Scope of delivery: incl. upper connecting rod bearing
Conclusion: Solid, high-quality Crankshafts in OEM quality - perfect for engine overhauls and sufficient for subtle tuning.
SIP TIPS: Recommended purchase
- Plan for new bearings, Oil Seals and crescent keys
- Replace the Gasket Set as well as the Clutch and Pole Wheel Nut as well
- Useful tools: 27338000, 21071000, 18119000
Crankshaft / stroke 51mm / piston rod 97mm / 24/25mm, M12
Crankshaft with Ø 82mm crankweb (flywheel side), Ø 87mm crankweb (rotary valve side), 97mm piston rod with 2 additional lubrication bores, oil seal housing 24mm, bearing housing 25mm, stump cone with M12mm thread, incl. piston rod bearing
SIP-TIP: New bearings, oil seals and keys are a must. Same goes for sealing kit, clutch-, and flywheel nuts. It also makes sense to use the crankshaft tools # 27338000, # 21071000 and # 18119000. If you are using a V50/PK/PV/ET3 crankcase, you need an oil seal for conversion bearings.
