Cylinder racing performance Vespa Primavera PK S/XL FL Sip

Cylinder racing performance Vespa Primavera PK S/XL FL Sip.

From Sip we present to you their new Cylinder. Made of iron, there is nothing tougher for daily use.

This Cylinder comes with a very touring distribution, 178º exhaust and 122º intake.

A squish of 1.2mm and a tightening torque of 11-12nm on the Ø6 bolts, and 14-15nm on the Ø7 nuts is recommended.

Specifications:

• Stroke 51
• Connecting rod 97
• Displacement 125
• Piston Ø55.40 two segments
• Head with 8 anchoring points
• Spark plug long thread
• Exhaust stud distance 52mm

Valid for all smallframe engines, note that on PK 75 XL and FL 75 models the crankcase must be machined.

On the flywheel side of the crankcase, the half-moon must be filed so that the Cylinder sits completely.