Wiseco Top-End Rebuild Kit for Honda TRX400X / TRX400EX / XR400 - 10:1 - 85.00mm - PK1031 1990 Yamaha YFS200 Blaster - Lower 2004 Kawasaki KSF400

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Wiseco Top-End Rebuild Kit for Honda TRX400X / TRX400EX / XR400 - 10:1 - 85.00mm - PK1031 1990 Yamaha YFS200 Blaster - Lower 2004 Kawasaki KSF400Wiseco Performance Top End Rebuild Kit Part Number: PK1031 Piston Size: 85. 00mm Displacement: 397cc Piston Standard Bore: 85. 00mm Oversize Bore: 0. 00mm Stroke: 70. 00mm Compression Ratio: 10: 1 These kits contain everything you need to complete your rebuild the right way, the first time High Performance ring kit and alloy pin included with each piston kit for extended life and sustained power. Dedicated forgings used for superior strength to weight