Engine Kit 251cc Master Rotary Valve

The first Plug & Play kit to increase the displacement of your Vespa large frame up to 251cc. Made in 2 specific configurations "Master" Rotary Valve and "Slave" Reed valve, the kit includes all the accessories for the correct assembly of the crankcase, 251cc cylinder kit, keyed crankshaft, specific clutch keyed and shortly the Flytech Tuning ignition and the Touring Classic mufflers dedicated.

The performances are of the highest level, the reed version with Dellorto PHBH 30 carburetor and Touring Classic muffler exceeds 30CV at the wheel but with a fluid and gritty delivery.