Dr650 fmf powercore 4 jetting. Suggested jetting: Wide open race exhaust - #155 main jet Free flowing exhaust - #150 main jet Stock Exhaust - #145 main jet Remove the float assembly and replace the two O-rings on that assembly with the 2 new O-rings included with the Jet Kit, then re-install the float assembly into the carburetor. 3K subscribers Subscribed '06 DR650. She's loud though! Apr 16, 2012 · You can buy a jet kit from procycle and just follow the instructions. Jun 16, 2016 · Mine has an FMF powerbomb/powercore exhaust and a TM40 carb. The Powercore 4 spark arrestor muffler. Thanks! Mar 6, 2025 · Don't know if I should change the pilot jet. 2011 DR650 Mikuni 40mm flat-slide carb K&N air filter FMF powerbomb header FMF powercore muffler Most riding is close to sea level. You gotta open up the intake and jet it. Finally added GSXR exhaust. FMF developed the Powercore 4 to increase the horsepower and torque throughout the entire power curve. e6f ijm8o jo3isbz kxknhb ez8u k04k6y 45m znmz yv3j 5ioj