Kawasaki KX500 Phathead cylinder head kit with compression release 1988-2004 GASGAS XR200/XR250 88-02

XR200/XR250 88-02

KX125 all years

We replicated the Athena chamber to offer the best performance for your two stroke big bore kit

Kawasaki KX500 Phathead cylinder head kit with compression release 1988-2004

Kawasaki KX500 Phathead cylinder head kit with compression release 1988-2004 GASGAS XR200/XR250 88-02Kawasaki KX500 Phathead cylinder head kit with compression release 1988 2004 Chamber selection: K51 42cc Stock compression K52 40. 6cc (100+ octane)K53 38. 2cc (105+ octane) Phathead Kits include a head shell with one combustion chamber, two sets of o rings, cylinder head nuts, copper washers, some stickers for your bike and tool box and installation instructions.. Phathead cylinder heads are made of 6061 T6 billet aluminum. The material is stronger