Description

WARNING: For installing this cylinder kit on the models YZ 125 LC 1997-1998, please replace the original exhaust muffler with 1999-2003 version and for the models 1997-1999 are absolutely necessary 2 original Yamaha torsion springs (valve) year 2000-2003

Athena 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.

Replacement parts for this kit

Code	Description
S410485308001	Cylinder Head
S4C05400016A	Piston Kit, 53,94 – Athena Kit
S410485308002	Central Head Dome
S4C05400016B	Piston Kit, 53,95 – Athena Kit
S410485303009	Valve Assy Kit
P400485160003	Gaskets Kit For Athena Cylinder Kit
P400485999003	Athena Cilinder Head O-ring Kit
S410485303011	Valve Spring For Yz 125 (1 Pc)
S41316130	Rings