Yamaha off-road motorcycle // sport atv gytr high compression piston kit
Engine / performance
The GYTR High Compression Piston Kit provides a performance boost throughout the RPM range while maintaining a high level of durability. Machined valve pockets provide additional valve clearance when used with higher lift camshafts. Boosts engine compression ratio to 14:1 (stock is 13.5:1). The kit includes piston rings, piston pin, and clips (uses stock replacements). Requires use of minimum 100-octane racing fuel.
1SL-E16A0-V0-00
Two-ring design provides less drag and more horsepower than stock three-ring design
Boosts engine compression ratio to 14:1
Uses stock gaskets (not included)
1SM-E16A0-T0-00
Boosts engine compression ratio to 14:1
Includes piston rings, piston pin, and clips (uses stock replacements)
33D-E16A0-V0-00
Two-ring design provides less drag and more horsepower than stock three-ring design
Boosts engine compression ratio to 13.5:1
17D-E16A0-V0-00
Two-ring design provides less drag and more horsepower than stock three-ring design
Boosts engine compression ratio to 14.0:1
GYT-5D305-00-00
YFZ450 APPLICATION:
Boosts engine compression ratio to 13.0:1
1.5 to 3 hp increase throughout most of the power band
No crank rebalancing necessary
GYTR Top End Gasket Kit required for installation
YFZ450R APPLICATION:
Boosts engine compression ratio to 13.2:1
1.5 to 3 hp increase throughout most of the power band
No crankshaft rebalancing necessary
Uses stock gaskets (not included)
Yamaha off-road motorcycle // sport atv gytr high compression piston kit
Yamaha off-road motorcycle // sport atv gytr high compression piston kit