Wiseco 837M08200 2-Stroke Forged Piston Kit Standard Bore 82mm Kawasaki 800 SX-R

The Wiseco 837M08200 is a Pro-Lite 2-stroke forged piston kit designed for the Kawasaki 800 SX-R (JS800) personal watercraft. Precision-forged and CNC-machined in the USA, this standard bore 82.00mm piston kit delivers the strength, durability, and performance demanded by both competitive racers and recreational riders. Each kit includes the piston, ring set, wrist pin, and circlips for a complete installation.

Key Features:

• Forged 4032 Aluminum Alloy: High-silicon, low-expansion aluminum provides superior strength, reduced weight, improved heat transfer, and excellent detonation resistance
• Pro-Lite Lightweight Design: Dedicated forgings and precision CNC machining minimize reciprocating mass for quicker engine revs without sacrificing durability
• Anti-Detonation Grooves: Engineered ring land profiles eliminate ring blow-by while maximizing engine performance and compression
• Optimized Skirt and Dome Profile: Contoured piston geometry improves cylinder sealing, reduces friction, and enhances consistent power output
• Diamond-Turned Finish: CNC turning centers produce a precise surface finish with no size variation, ensuring proper fitment and break-in
• Universal Cylinder Compatibility: Suitable for use in cast iron, chrome, Nikasil, and boron composite cylinder bore compositions
• Standard Bore: 82.00mm — oversize options available (837M08250 at 82.50mm and 837M08296 at 82.96mm)
• Manufactured in Mentor, OH, USA

Whether rebuilding a stock engine or preparing for closed-course competition, the Wiseco 837M08200 piston kit is a proven upgrade for the Kawasaki 800 SX-R platform. Wiseco's oversize variants also support cylinder resleeving applications, extending the service life of chrome, Nikasil, and boron composite cylinders.