Athena Big Bore Cylinder Kit 5.0 mm Oversize to 102 mm - 497cc - P400485100054 | Yamaha YZ450F 2010-2017

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
• Wheel Power: 51.8 HP / 8300 rpm