Athena Big Bore Cylinder Kit 4.0 mm Oversize to 100 mm - 490cc - P400210100030 | Honda CRF450R 2009-2016

Features:

• Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets
• Includes Forged piston, rings, clips and pin
• Athena top-end gasket set includes required seals and hardware
• Easy-to-follow step-by-step installation instructions
• Most are bolt-on; no machining required except where noted
• Rear Wheel Horse Power: 50.5 HP / 8,400 RPM