Yamaha XS650 Mikuni BS34 38 CV Carb Slide Needles, Needle Jets, and Mixture Screws
The air/fuel mixture is the most critical aspect of proper carb tuning — Nothing effects XS650 performance more. Start your Yamaha XS650 carburetor restoration off the right way with a new carburetor mixture screw kit. It includes everything you need to smooth out your mixture. Or, you can get only the parts from the kit that you need. We sell Mikuni VM and CV air adjusting screws, slide needles and preload springs. And you can drastically improve your XS650 café racer performance with a Dyno Tune needle and jet kit from Heiden. For small XS650 mixture adjustments due to elevation and temperature fluctuations, we offer the handy Mikuni Pocket Tuner.