Wiseco Pistons 4650M09200 High-Performance Piston - Kit for YZ/WR400

The Wiseco 4650M09200 piston kit is a high-performance replacement piston designed specifically for Yamaha YZ400F and WR400F motorcycles. This complete kit includes the forged piston, piston rings, circlips, and wrist pin for a complete installation.

Key Features:

• Forged from high-silicon, low-expansion aluminum alloy for superior strength and durability
• Reduced weight compared to cast pistons for improved engine response
• Enhanced heat transfer properties extend piston life and reduce detonation risk
• Precision CNC diamond-turned finish ensures perfect dimensions with zero size variation
• Compatible with all cylinder bore compositions including cast iron, chrome, Nikasil, and boron composite
• 92mm bore size designed for stock or rebuilt cylinders
• Complete kit includes piston, rings, circlips, and wrist pin

Wiseco pistons are manufactured using state-of-the-art computerized CNC machining processes to deliver consistent quality and performance. Whether you're rebuilding a competition motocross bike or restoring an off-road enduro machine, this piston kit provides the reliability and performance demanded by both racers and recreational riders.