Suzuki RM250 Phathead combustion chambers Chamber Selection:S34 - 14.4cc (105+ octane) YFB250 Timberwolf 2x4 YFB250FW Timberwolf Yamaha YZ250 Phathead cylinder Suzuki Chamber selection:HN50 - 66.5cc Stock compression CR125R9304
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Ships within 48 hours · Estimated delivery Sep 23 - Sep 28