US$ 29.60
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two sets of o-rings
9cc (100+ octane)S04 - 5
mapping suggested
CX67 (105+ octane)
9cc 105+ octane
Honda CR500 Phathead compression release Combustion chambers Chamber selection:H52 - 62.5cc (100+ octane) two sets of o-ringsChamber selection: H50 66. 4cc Stock compression H51 64. 4cc (95+ octane) H52 62. 5cc (100+ octane) H53 60. 8cc (110+ octane)
US$ 29.60
US$ 10.99
US$ 37.00
US$ 37.00