Eliminates lean spitting and improves performance with custom exhausts, air filters, or high-compression setups

• Eliminates lean spitting and improves performance with custom exhausts, air filters, or high-compression setups
• Comprehensive assortment includes multiple main jet sizes 150-190 and adjustable needles for carb optimization
• Direct fit for Sportster and Big Twin CV carbs, with instructions for easy tuning and installation