Wiseco 4965M08300 Suzuki Hayabusa CR Forged Piston Kit - GSX1340R 13.5 1 83mm

The Wiseco 4965M08300 is a high-performance forged piston kit designed for the Suzuki GSX1340R Hayabusa. Featuring an 83.00mm bore diameter and an aggressive 13.5:1 compression ratio, this kit is engineered to extract maximum power from the Hayabusa's inline-four engine while maintaining the durability demanded by performance street and track riders.

Wiseco forges each piston from a high-silicon aluminum alloy, delivering exceptional strength-to-weight ratio and thermal stability under the extreme heat and cylinder pressures generated by high-compression applications. The optimized piston crown geometry and precision-engineered skirt profile work together to improve combustion efficiency, boost horsepower, and increase torque output.

Kit Includes:

• Forged high-silicon aluminum piston(s)
• Piston rings
• Wrist pins
• Circlips

Key Specifications:

• Bore Diameter: 83.00mm (oversize)
• Compression Ratio: 13.5:1
• Piston Design: Forged 4-stroke performance
• Application: Suzuki GSX1340R Hayabusa (2008–2009)

Important Notes:

• This is an oversize piston — cylinder boring or sleeving is required prior to installation
• Professional installation by a qualified engine builder is strongly recommended

Wiseco piston kits are manufactured to tight tolerances for a precise fit, ensuring the ultimate combination of performance and long-term engine reliability.