Yamaha YZ125 Phathead cylinder head kit 1994-2000 Color:Blue 9cc 105+

9cc   105+

1cc Stock  (91+ octane)

SX51-09 (100+ octane)

KTM85 2004-2012 Phathead Racing Cylinder head kit

This kit includes the required engine mounts

Yamaha YZ125 Phathead cylinder head kit 1994-2000 Color:Blue 9cc 105+Yamaha YZ125 Phathead cylinder head kit 1994 2000 Chamber selection: Y11 10. 0cc Stock Y12 9. 3cc (95+ octane) Y13 8. 8cc (100+ 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 and transfers heat better than cast