We are committed to getting orders out as quickly as possible, but due to COVID-19 we are experiencing a major delivery delay wtih USPS, UPS and FedEx. Once shipped, the delivery times are out of our control. So please be patient during this time. Stay safe! Free shipping on all orders over $175
We are committed to getting orders out as quickly as possible, but due to COVID-19 we are experiencing a major delivery delay wtih USPS, UPS and FedEx. Once shipped, the delivery times are out of our control. So please be patient during this time. Stay safe! Free shipping on all orders over $175
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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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