Wiseco Pistons RE825M09700 Racer Elite Piston Kit Bore CR - 4-Stroke 97.00mm 14 1

The Wiseco 4-Stroke Racer Elite Piston Kit (part number RE825M09700) is a high-performance forged piston kit engineered specifically for the Yamaha YZ450F. Built to a 97.00mm bore diameter at a 14:1 compression ratio, this kit is crafted from 2618 aluminum alloy — a premium forging material prized for its superior tensile strength and thermal resistance in high-output four-stroke engines. Each kit ships complete with high-quality piston rings, wrist pin(s), and circlips, so you have everything needed for a proper rebuild.

Key Features:

• Engineered, forged, and machined in the USA in Mentor, OH
• Designed and built for each specific 4-stroke powersports engine application
• 2618 forged aluminum construction for improved tensile strength, optimizing durability and service life
• Dedicated forgings deliver an optimized strength-to-weight ratio
• 97.00mm bore diameter, standard (STD) oversize
• 14:1 compression ratio
• Includes high-quality piston rings, wrist pin(s), and circlips
• No skirt coating

Wiseco has remained at the forefront of powersports performance through every era, and the Racer Elite Series represents that commitment at the highest level — proven across every class and condition of competitive riding. Fits select 2020–2023 Yamaha models. California residents: this product is subject to Prop 65 warnings for cancer and reproductive harm.