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The "butterfly" version of our original EZ-Just® mixture screw for adjusting the air idle mixture on early 1979-87 Harley Sportster or 81-89 big twin Keihin carburetors. Easily tune and adjust your idle mixture without removing the carburetor or trying to maneuver a screwdriver under the tank. Compatible only with pre-1988* Harley butterfly carburetors and replaces the stock mixture screw.
Not for use on CV style carburetors or carburetors used on non-Harley motorcycles. This part will NOT fit Keihin CVK carburetors. For CV carburetors (CV40, CVK32-40) please see the EZ-Just for CV carburetors.
*Fitment: 1981-1989 Harley Big Twin (Shovel, Evo) with Keihin butterfly carburetor.1979-1987 Harley Sportster with Keihin butterfly carburetor.CV Performance is the only manufacturer of the US made EZ-Just® for tuning early Keihin carburetors.
California Proposition 65 Warning
Received part quickly and the quality was great. Fit flawlessly and worked better than expected. You won't be disappointed.
Great product and the quality is second to none. I can now adjust my fuel air mixture without getting scarred. Very easy to install. I had no problems. Thank you CVP for creating such a great product.
Carb Rebuild Kit - Harley 76-87
CVP Mixture Screw Packing
EZ-Just Mixture Screw - Pre-88 only