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2012 YZF250 Project bike follow up.

 

 

 

 

 

JCE racer Cody Brownfield and Jay Clark have now logged over 40 hours on the Dirt Bike Magazine project Yamaha YZ269cc.  Cody is racing REM and Triple Crown events in So Cal. The 2012 model has proven to be very reliable and perform well with all of the mods.  The Cylinder Works Big bore with the Vertex Piston now has 39.5 hours with no issue.  The improved torque and power are amazing.  While the YZ250 still has a carb it jets very well.  We run a 170 main, Needle in 3rd from top, 40 pilot and 65 leak.  Other key parts to the build that are very well proven.Stage 2 Hot Cams FMF Ti megabomb and RCT mufflerHinson clutch basket, pressure plate and inner hub.  MB1 modified suspension

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