PRODUCT INFORMATION

YFZ450 Application: Increases engine compression ratio to 13.0:1 (stock '06~'09 is 11.2:1 and '04~'05 is 11.9:1) Offers 1.5 to 3 hp increase throughout most of the power band. No crank rebalancing necessary. Piston is forged aluminum with machined valve pockets for addtional valve clearance when higher lift camshafts are used. Includes piston rings, piston pin, and clips (uses stock replacements). GYTRŽ Top End Gasket Kit (GYT-5TG04-10-00) required for installation. Requires use of minimum 100-octane racing fuel. Fits '04~'05 YFZ450 GYT-5TG05-00-10 $189.95