Gruppo termico VMC GS58-S 135cc Ø 58mm e corsa 51mm, CNC Laterale
VMC GS 58 135cc Ø 58mm and 51mm stroke thermal group, Central CNC
Bore diameter 58mm Stroke 51mm Displacement 135cc
Timings: Main transfers 124° Exhaust 174°
FORGED double-ring aluminum alloy piston,
CNC machined solid aluminum head, Steel segments, Steel pin, Steel retainers
Recommended squish 1.2 mm Tightening torque m6 bolts 11-12 Nm, m7 nuts 1.4-1.5 Nm
It is mounted with 51mm stroke crankshafts and 97mm connecting rod
Attention: To be mounted on Piaggio crankcases, a small machining operation is required on the crescent
as the cylinder has been designed with generous fluid dynamics which requires more space on the base of the cylinder.
Data sheet
- Versione Vespa
- Vespa Small Frame
- CYLINDER
- Cast iron
Specific References
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