Honda CR500 Phathead Combustion chambers YZ250 CRF50 XR50
Description
CRF50 XR50
CRF450R 02-16
Improved flow
CR500 models 1999 and older
Honda CR500 Phathead Combustion chambers YZ250 CRF50 XR50Chamber selection: HN50 66. 4 Stock compressionHN51 64. 4cc (95+ octane)HN52 62. 5cc (100+ octane)HN53 60. 8cc (110+ octane)
Exchange/Return Notes
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