Yamaha Cylinder works YZ250 big bore 295cc 72mm Phathead cylinder head kit 1999-2026 CR85 big bore kit ECU remap required for best CR125R9299 Yamaha 6cc 100 octane Chamber selection:Y03 - 5.6cc (100+ octane)
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Ships within 48 hours · Estimated delivery Oct 7 - Oct 12