Wiseco 4898M07500 Forged Piston Kit Bore Compression Ratio - 75mm 13.2 1

The Wiseco 4898M07500 is a high-performance forged piston kit designed for the Honda CBR1000RR inline-four engine. Featuring a 75.00mm bore and an aggressive 13.2:1 compression ratio, this piston kit is engineered to deliver maximum power output and durability for street and track applications.

Kit Includes:

• 1 forged aluminum piston (sold individually — one per cylinder)
• High-performance ring set
• Alloy wrist pin
• Circlips

Key Features:

• Forged from high-silicon, low-expansion aluminum alloy for superior strength, reduced weight, improved heat transfer, and extended service life
• Engineered, forged, and machined in the USA in Mentor, OH to tight tolerances for each specific engine application
• Dedicated forging design optimizes strength-to-weight ratio and maximizes horsepower and torque output
• Diamond-turned finish from CNC-controlled turning centers ensures a perfect fit with no size variation
• Optimized skirt profile with precision-machined cam shape for peak performance and long service life
• Compatible with cast iron, chrome, Nikasil, and boron composite cylinder bore compositions
• Oversize pistons require cylinder re-sleeving — replacement sleeves are available separately

Wiseco piston kits are sold per cylinder. For a complete CBR1000RR rebuild, four kits are required. Top-end bearings, gaskets, and cylinder sleeves are not included unless otherwise noted. Wiseco's forged 4-stroke pistons are proven at every level of riding and racing, making the 4898M07500 an ideal choice for engine rebuilds or high-compression performance builds.