Wiseco 698M03900 Pro-Lite 2-Stroke Piston Kit 39.00mm Standard Bore

The Wiseco 698M03900 Pro-Lite piston kit is engineered for 50cc 2-stroke dirt bike engines with a standard 39.00mm bore, designed to fit Cobra, Action, LEM, and KTM models. This complete piston kit delivers the performance and reliability that Wiseco has been known for since 1940.

Key Features:

• Forged from high-silicon, low-expansion aerospace-grade aluminum alloy for superior strength and durability
• CNC-machined Pro-Lite design with optimized piston shape and profile for maximum performance
• Diamond-turned finish ensures perfect surface quality with no size variation
• Lightweight construction reduces reciprocating mass for improved throttle response
• Enhanced heat transfer properties for consistent performance under demanding conditions
• Compatible with all modern cylinder bore compositions including cast iron, chrome, Nikasil, and boron composite

Complete Kit Includes:

• Forged aluminum piston
• Piston rings
• Wrist pin
• Circlips

Wiseco pistons are manufactured in the USA using state-of-the-art computerized facilities, backed by over 80 years of racing heritage and engineering expertise. Each piston is precision-engineered to deliver optimal engine efficiency, extended service life, and maximum power output for both competitive racers and recreational riders.