Honda CR500 Phathead Combustion chambers YZ250 Improved flow
Description
Improved flow
CRF450R 02-16
O-ring lube is provided to help with assembly and reliability
YFB250FW Timberwolf 4x4 YFM350ER Moto-4 YFM350X Warrior YFM400F Kodiak 4x4 YFS200 Blaster 1993
8cc (105+ octane)
Honda CR500 Phathead Combustion chambers YZ250 Improved flowChamber 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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