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Specifically designed to restore proper valve operation in your WR450F
Do I need special jetting or ECU changes
WORKS ON ALL - 06-09 12-13 YAMAHA YFZ 450 YEAR MAKE MODELS
2021-2022 RZR Trail S 1000 Ultimate
Designed for 98mm big bore cylinders
02-08 CRF450R CRF 450R 96mm 14:1 CP Stock Bore FULL RACE Piston CometicGaskets Defender HD8 800 Specifically designed to restore properTake your Honda CRF450R to the next level with this powerful 96mm stock bore 14: 1 CP piston kit and Cometic gasket set! Key features: Forged from durable 6061 T6 aluminum for superior strength 14: 1 compression ratio boosts power across the RPM range Complete kit includes piston, rings, pin, circlips, and Cometic gaskets Direct replacement designed specifically for 2002 2008 CRF450R models All Parts are MADE IN USA Works with race gas only!! Get the