The Pinasco EVOTEN BOOSTER cylinder series with Ø 46mm is the latest product from Pinasco for the world of Piaggio mopeds. Compared to the previous model, it has a new over-ram design and a new piston layout. The exhaust has been further enlarged to significantly increase performance. Thanks to the flanged exhaust manifolds, available in 22, 25 and 28 mm, there is a wide choice of exhaust systems. The Pinasco EVOTEN BIG BORE cylinder kits are supplied with the new revised cylinder head with central spark plug and 5-bolt fitting. The compression ratio is 13:1.