Honda CR500 1985-2001 Phathead cylinder head kit with compression release Color:Blue Honda CR250 Phathead cylinder head

Honda CR250 Phathead cylinder head kit 2005-2007

6061 T6 billet aluminum body

SX50  Stock

9cc stock compression

Honda CR500 1985-2001 Phathead cylinder head kit with compression release Color:Blue Honda CR250 Phathead cylinder headHonda CR500 Phathead cylinder head kit with compression release 1985 2001 Kibblewhite compression release included Chamber selection: H50 66. 4cc Stock compression H51 64. 4cc (95+ octane) H52 62. 5cc (100+ octane) H53 60. 8cc (110+ 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