Wiseco PK1881 Top End Piston Kit 13.2:1 96mm for Suzuki RMZ450 2008-2012

The Wiseco PK1881 is a complete top end piston kit designed for the 2008–2012 Suzuki RMZ450 (and RMX450Z 2010–2019), featuring a 96.00mm standard bore and 13.2:1 high-compression ratio. Everything needed for a top end rebuild or overbore is included in a single kit, engineered and manufactured in the USA.

Wiseco's forged 4-stroke pistons are built to exact tolerances for each specific engine application, combining maximum strength with an optimized strength-to-weight ratio. The aerospace-grade aluminum alloy construction provides superior heat transfer, reduced weight, and extended service life compared to cast alternatives.

Key Features:

• Dedicated forging — race-proven design, CNC machined for precise fitment
• 96.00mm standard bore with 13.2:1 high-compression ratio (piston part number: 4954M)
• Improved tensile strength via forged aerospace aluminum alloy
• Optimized strength-to-weight ratio with dedicated forging profile
• High-performance ring set designed for 4-stroke motocross applications
• Premium alloy wrist pin and top end needle bearing included
• Engineered, forged, and machined in the USA (Mentor, OH)

Kit Includes:

• Forged piston (4954M)
• High-performance piston rings
• Alloy wrist pin
• Circlips
• Complete top end gasket set with valve seals
• Small end (little end) needle bearing

Chosen by top race teams across all forms of competition, Wiseco's 4-stroke piston kits deliver the power and reliability demanded by serious motocross and off-road riders.