Wiseco 2338M07340 Pro-Lite Forged Piston Kit 73.40mm Bore Standard Compression

The Wiseco 2338M07340 Pro-Lite Piston Kit is a complete, ready-to-install piston assembly engineered for 2-stroke powersports engines. Forged from high-silicon, low-expansion aluminum alloy, this piston delivers superior strength, reduced weight, improved heat transfer, and extended service life compared to conventional cast pistons.

Kit Includes:

• One forged Pro-Lite piston
• Piston ring(s) — CDW ring series
• Wrist pin
• Circlips

Key Specifications:

• Bore: 73.40mm (2.890 in.)
• Compression: Standard (STD)
• Piston Series: Pro-Lite
• Ring Series: CDW
• Number of Cylinders: 2
• Displacement: 550cc
• Country of Origin: USA

Pro-Lite Series Features:

• CNC-machined cam shape and profile for optimized horsepower and service life
• Diamond-turned finish from CNC turning centers ensures precise sizing with no variation
• Optimized forging design with lightening cuts for enhanced throttle response
• Aerospace-grade aluminum alloy for a superior strength-to-weight ratio
• Race-proven forging designs trusted by top competition teams across Supercross, Motocross, GNCC, and more
• All pistons forged and manufactured in-house in the USA

The Pro-Lite series is Wiseco's core forged 2-stroke piston line, balancing performance and reliability for both track and trail riding. Note: Oversize pistons require cylinder re-sleeving or boring. This kit is sold by bore size — standard and oversize designations are not marked on the piston itself.