Yamaha YZ250 YZ250X WR250 Phathead cylinder head kit 1999-2026 CR85 big bore kit If you have a Hot cobra CR125R9304 4cc 110 octane Chamber selection:F13 - 6.0cc (100+ octane)
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Description
Yamaha YZ250 YZ250X WR250 Phathead cylinder head kit 1999 2026 CR85 big bore kit If you have a Hot cobra CR125R9304 4cc 110 octane Chamber selection:F13 6.0cc (100+ octane) If you have a Hot Rods stroker crank our insert will work WR250F WR426F YFM250 Bear Tracker YFM350F Wolverine 4x4 YFM350X Warrior YFM400 Big Bear 2x4 YFM400 Big Bear 4x4 YFM400A Kodiak YFM400F Kodiak 4x4 YFM600FW Grizzly 4x4 YFM660R Raptor YFS200 Blaster 2000