Monster big bore kit replacement cylinder head
Rolling Wrench

Monster big bore kit replacement cylinder head

Regular price $155.00 $0.00

If you purchased our 120cc monster big bore kit and need a replacement cylinder head with valves installed, here ya go! This will only work on a QMB139 engine.

intake valve: 21.5mm

exhaust valve: 18.9mm

intake port: 24mm

exhaust port: 22mm

valce length 62.3mm ( works with 64mm valve cam tower)

 


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