Cylinder Vespa Smallframe 125 to 135cc GS58-R VMC

Cylinder Vespa Smallframe 125 to 135cc GS58-R VMC.

From VMC we present to you the evolution of the GS58-S. Made of iron, there is nothing tougher for daily use.

This cylinder comes with a more racing distribution, 182º exhaust and 125º 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 135
• Piston Ø58 two segments
• Head with 8 anchoring points
• Spark plug long thread
• Exhaust stud distance 52mm

Suitable for all smallframe engines, note that on models PK 75 XL and FL 75 it is necessary to machine the crankcase.

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