Improve Your For Harley's Engine Performance with a Carburetor Diaphragm Slide
Carburetor Diaphragm Vacuum Piston Diaphragm Slide For 40mm CVK. For Evolution XL883 w/ Carb 88-06. For Evolution XL/XLH1200 w/ Carb 88-06. For Evolution Big Twins (FL & for FX models) w/ Carbs 88-06.