Cylinder Vespa Smallframe 125 to 144cc GS60-R VMC

Cylinder Vespa Smallframe 125 to 144cc GS60-R VMC.

From the racing team at VMC we present to you the evolution of the GS58-R. Made of iron, according to the manufacturer there is nothing more powerful on the crankcase intake market.

This cylinder comes with a more racing distribution, 182º exhaust and 125º intake. 6 transfers, Ø 32 manifold.

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 144
• Piston Ø60 two segments
• Head with 8 anchoring points
• Spark plug long thread
• Exhaust stud distance 60mm

Compatible with all small frame engines.

Necessary operations on the crankcase for installation:

• turn the crankcase to Ø64 for 8mm depth
• mill the crescent of the flywheel side half-crankcase