J and G Racing Products

NEW V4 30.5cc BIG BORE TOP END KIT

NEW V4 30.5cc BIG BORE TOP END KIT

This kit comes as shown above and it is designed to work with a 30mm Zenoah crankshaft. Convert your Zenoah to a high performance racing engine. The V4 has been completely redesigned with 6 transfer ports, very large exhaust and intake. This is our most powerful engine we ever developed. The price is $375.
Lightweight modified and matched diameter to the boar pistons are available for an additional $40.00 which we highly recommend. 

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