Wiseco 4453M07650 Forged Piston Kit Bore CR - 4-Stroke 76.50mm 12 1

The Wiseco 4453M07650 is a 4-Stroke Forged Series Piston Kit designed for the Yamaha FZR1000R, featuring a 76.50mm (3.012 in.) bore at a +1.5mm oversize and an aggressive 12:1 compression ratio. Engineered, forged, and machined in the USA at Wiseco's facility in Mentor, OH, this kit delivers the tight tolerances and superior strength demanded by high-performance street and track applications.

Kit Specifications:

• Bore Size: 76.50mm (3.012 in.) — +1.5mm oversize
• Compression Ratio: 12:1
• Stroke: 56.40mm
• End Displacement: 1029cc
• Wrist Pin Style: Floating
• Wrist Pin Part #: CW18
• Ring Set Part #: 3012XG
• Piston Material: Forged aluminum

Key Features:

• Dedicated forgings allow for an optimized strength-to-weight ratio versus cast alternatives
• Improved tensile strength of forged material extends service life under high-stress conditions
• Designed specifically for the FZR1000R engine for precise fit and maximum performance
• Built to the tightest tolerances for the ultimate combination of performance and reliability
• Kit includes piston, high-quality piston rings (3012XG), wrist pin (CW18), and circlips — everything needed for installation

Wiseco's 4-stroke forged piston kits are proven at every level of riding, from street performance builds to full competition use. With over 80 years of piston development expertise, Wiseco remains the industry benchmark for forged powersports pistons made in America.