Standard bore CP Piston for the 03-09 Yamaha YZ450F. Also Fits 03-15 WR450F.
These Pistons are MX series pistons
CP Pistons are the highest quality pistons you can buy for your MX Bike. To go with there high quality, they also offer many standard features that are not included in many other piston manufactures standard pistons.
CP Pistons come standard with these Features:
-Double Pin Oilers
-Accumulator Groove
-Anti Detonation Grooves
-Light-weight wrist pins
-MX Series Pistons include Moly Piston Skirt Coating and DLC Wrist Pin.
All these features allow CP to produce the best performing pistons available on the market. For more information about these features, please click here.
Other Options are available as add-on to these pistons. These options are lateral gas porting and piston crown coating. These options are available to be added directly to CP off the shelf pistons. no more custom pistons required. Pricing listed in the options list are per piston, multi piston engines will have an increased charge for these features. For more information on this add on features, please click here.
For pistons with 13:1+ compression ratio, we recommended 110+ octane race fuel. For any compression ratio less than 13:1, we recommended a minimum of 91+ octane pump gas.
