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/ GYTR High Compression Piston Kit
Piston kit to replace the original piston to increase performance. Provides a performance boost throughout the RPM range while maintaining a high level of durability The special 2-ring design provides less drag and more horsepower than the stock 3-ring design The CNC machined forged aluminum piston also helps boost the engine compression ratio to 14:1 Includes piston rings, piston pin, and clips (uses stock replacements) Uses stock gaskets (not included) This piston requires use of a minimum 100-octane racing fuelNote:For maximum performance and protection Yamaha highly recommend to use our Yamalube® 4-R Performance Oil with Ester.