Mikuni Main Jets 120-140 for Curved Intake, 170-190 for the Inverted Intake. 035 and .036 to see which works best for your engine.
035 Main Jet seems to work best but you may want to try .034. If you have to play with your choke to get your engine to run properly, you need to adjust the Carb Main Jet. Mikuni STAGE I INSTALL GUIDEĬARB JETS: Upgrading the Intake and Exhaust usually requires re-jetting the Carburetor. This carb upgrade really wakes up the responsiveness of the engine and, as an added bonus, allows you to remove the stock throttle linkage mechanism and replace it with one simple throttle Cable connection. Mikuni Carb: For Top Power see the Mikuni Stage 1 Kit with Fatty or Mikuni Stage 1 Kit with Stinger. Also available is the Genuine K&N Stage 1 Kit. Stock Carb: The Stage 1 Kit, Stock Carb is an inexpensive, easy bolt-on Upgrade to the Intake and Exhaust.
