Kit Racing 47,6 - 70cc With Piston Pin In ø12

at hena offers a wide range of cylinder kits for scooters and mopeds with diameters and portings completely re-designed as original spare parts and/or specific boost to be used on tracks. Athena put forward three different versions of cylinder kits: 50cc Original, 70cc Sport, 70cc Racing. In particular, racing kits consist of lighter pistons with flat head, special portings, exhaust bridge, and a new cylinder head designed to increase the compression ratio and improve internal combustion. For specific scooter models Athena supplies also special long stroke Racing kits complete with crankshafts and reinforced connecting rods.