Yamaha YZ450F (2014–2017) 97mm Stock Bore Race Cylinder Kit – Athena P400485100053

Yamaha YZ450F 2014–2017 97mm Stock Bore Factory Works Race Cylinder Kit – Athena Description Factory-level power, no machining — the Athena P400485100053 is a complete stock-bore race cylinder kit for 2014–2017 Yamaha YZ450F. 97mm nickel-carbide plated aluminum cylinder (Factory Works porting), forged 12.4:1 domed piston, hard-anodized power valves, and full top-end gasket set — drop-in +20 hp potential for MX/supercross builds. Cylinder head not included.

What’s Included

• 97.00 mm Aluminum Cylinder – nickel-carbide coated, Factory Works porting
• Forged Domed Piston Kit – 12.4:1 compression, rings, pin, clips
• Hard-Anodized Power Valves – high-flow, non-OEM
• Athena Top-End Gasket Set – head/base gaskets, seals, hardware

Key Features

• 97 mm stock bore — direct OEM replacement, no boring
• Nickel-carbide plating — extreme durability, low friction
• Factory Works porting — max airflow, race-tuned performance
• 12.4:1 forged piston — aggressive mid-top power
• Hard-anodized power valves — faster response, longer life
• Made in Italy — pro-grade precision

Fitment

• 2014 Yamaha YZ450F
• 2015 Yamaha YZ450F
• 2016 Yamaha YZ450F
• 2017 Yamaha YZ450F

Warranty Info Backed by Athena limited warranty. Professional installation recommended. WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Price & SKU Retail Price: $772.80 SKU: 0931-0958 / P400485100053 Weight: 4.66 lbs Availability: In Stock