SIP Performance Crankshaft 54mm- Vespa 90-125/ PK80-125


£271.75Special order item, delivery approx 5 working days
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SIP PERFORMANCE Uncle Tom bell-shaped 54mm stroke, 105mm conrod crankshaft for Vespa Smallframe 90-125cc, PK80-125cc. Also 50cc engines with 125cc cylinders. For reed valve engines!

High end racing crankshaft. These crankshafts are a reproduction of the famous crankshafts once produced by Thomas Dolischka. These are the peak in performance crankshafts, second to none. The bell shape is optimised for reed valves. The forged conrod has been polished to reduce turbulence in the crank casings.

Smallframe engine casings will need the crankcases machined at the cylinder base to accept the larger conrod. These are ideally suited for SIP EVO engine casings.

A 20mm oil seal and a large cone type ignition is required with these crankshafts.

Stroke: 54mm
Rod length: 105mm
Cone: 20/20mm

Made in Italy.

SIP 45029100

  • Vespa 125 Primavera
  • Vespa 125 Primavera ET3
  • Vespa PK 50
  • Vespa PK 80
  • Vespa PK 100
  • Vespa PK 125
  • Vespa 125
  • Vespa 50-90-100

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