Twin Power 90-06 Big Twin and XL with CV Carb CV Carburetor Recalibration Kit

Our recalibration kit cures throttle flat spots, backfiring and poor throttle response common to the CV carbs. It increases power midrange and top end while maintaining satisfactory fuel economy.

• Performance jets and needles boost midrange power and top-end throttle crispness
• Direct fit for Evolution and early Twin Cam engines, enhancing rideability
• Cures common CV carb issues without full teardown or ECU modifications