Wiseco 4855M07500 Forged Piston Kit Honda Compression - CBR954RR 75mm 13.2 1

The Wiseco 4855M07500 is a high-performance forged piston kit designed for the Honda CBR954RR (2002–2004). Machined to a 75mm bore with a 13.2:1 compression ratio, this piston is engineered for riders seeking maximum power output from their CBR954RR's 4-valve engine. As an oversize piston, it is intended for use with a re-sleeved or bored cylinder.

Key Features:

• Forged High-Silicon Aluminum Alloy – Superior strength-to-weight ratio compared to cast pistons, with excellent resistance to heat and fatigue under high-RPM conditions
• 75mm Bore Diameter – Oversize fitment for use after cylinder boring or sleeving
• 13.2:1 Compression Ratio – High-compression design optimized for performance and increased horsepower and torque output
• 4-Valve (4V) DOMED Design – Domed crown profile engineered to complement the CBR954RR's 4-valve combustion chamber geometry
• Optimized Piston Skirt Profile – Innovative skirt design reduces friction and improves ring seal for consistent performance
• Complete Kit Included – Each kit includes the forged piston, rings, wrist pin, and circlips (unless otherwise noted)

Wiseco pistons are manufactured in the USA and are a trusted choice among motorcycle engine builders and performance tuners worldwide. The 4855M07500 is ideal for track-focused or high-performance street builds where reliability and power are equally critical. Note: Oversize pistons require professional cylinder boring or sleeving prior to installation.