Pinasco Thermal Group 26028500 EVOTEN BIG BORE Cylinder 75 with 12 mm pin PIAGGIO 50 CIAO SI BRAVO BOXER GOLD color TWO-FACE

Pinasco Thermal Group 26028500 EVOTEN BIG BORE Cylinder 75 with 12 mm pin PIAGGIO 50 CIAO SI BRAVO BOXER GOLD color TWO-FACE The Pinasco "EVOTEN BIG BORE" 46mm thermal group is a new product dedicated to the world of Piaggio mopeds. Compared to the previous model it has 2 new recalculated main ports and 4 new piston-port ports, the exhaust has been further enlarged to significantly increase performance and accommodate the 22, 25 and 28mm flanged exhaust manifolds. The Pinasco "EVOTEN BIG BORE" thermal unit is supplied with the new unified central spark plug head with 5 studs fixed to the recess and complete with decompression valve which definitively eliminates the problem of vents in the combustion chamber and the consequent drops in performance; the compression ratio is 13:1