CV Performance
Improving the Performance of your Harley Motorcycle

Parts for early Harley Keihin "butterfly" carburetors.


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CVP Harley Mixture Packing Kit
Price: $9.95
Retail: $12.95
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Availability: In Stock
CV Performance Item #: CVP-MXPACK -

Replacement packing for use with the EZ-Just mixture screw or stock mixture screw. Includes the Viton® o-ring, washer, and spring that can be lost when removing the original mixture screw. These repack parts are a CVP exclusive and not available from the factory. Fits Harley Keihin 'Butterfly' and CV style carburetors 1981-2006. This packing kit also fits many CVK carburetors including: CVK40, CVK36, and CVK34 carburetors.* Note that in areas now using Ethanol as a 10% fuel additive, replacing...

Accelerator Pump Diaphragm for Harley carburetors
Price: $9.95
Retail: $14.95
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Availability: In Stock
CV Performance Item #: CVP-ACC2 -

CVP's exclusive Harley Accelerator Pump Diaphragm replaces worn or cracked diaphragms on Harley CV and Harley Keihin butterfly carburetors. Perfect fit, no more stretching or misaligned seals. On Backorder Until 7/1 Greater resistance to mild fuel additive exposure commonly found in pump gas. Will outlast many standard diaphragms when minimal Ethanol* enhanced fuel is occasionally used. Will fit on both stock Harley carburetors and S&S Super E or G.--> Sold individually, diaphragm only....

CVP Harley Fuel Inlet Elbow
Price: $17.95
Retail: $25.95
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Availability: In Stock
CV Performance Item #: CVP-MAXINLET -

The CVP Fuel Max Inlet ElbowTM replaces the stock fuel inlet on Harley CV40, and Harley Keihin butterfly carburetors. Increases flow by up to 40% when used with 5/16" fuel line. Single piece brass design will not break or leak like stock or two-piece replacement elbows. Compatible with all Harley CV (constant velocity) and Harley Keihin butterfly style carburetors 1981-2006. Includes a replacement stainless steel hose clamp.--> Instructions on replacing the fuel inlet. Sale price extended,...

CVP Idle Speed Screw
Price: $18.95
Retail: $27.95
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CV Performance Item #: CVP-IDL -

CVP's stainless steel idle speed screw for Harley CV and Keihin butterfly style carburetors. Now adjust your idle speed by hand without the need for a screwdriver. High quality single piece stainless steel construction guarantees durability and resistance to corrosion. Large easy to locate slotted head provided for fine tuning when a longer reach is still needed. Also includes stainless steel spring. Compatible with all Harley CV40 and Keihin butterfly style carburetors 1981-2006.* CVP Idle...

Harley carb rebuild kit 79-87
Price: $19.95
Retail: $23.95
Availability: In Stock
Item #: CVP-RPR76 -

Rebuild kit for early Harley Butterfly style carburetors. Replaces OEM kit 27006-92T for use with all 1976-1989 Harley Big Twin or 1976-1987 XL models using the Keihin butterfly carburetor only. Kits include gaskets, o-rings, accelerator pump diaphragm, both early and late style float needles, and all other common parts pictured that are necessary for a complete rebuild. Manufactured by Cycle Pro LLC*. NOTE: Kit is supplied as an OEM parts-only kit and may require a factory service manual...

27077-88 Harley manifold gasket
Price: $3.90
Retail: $4.75
Availability: In Stock
Cometic Item #: CVP-MFGK -

Manifold flange gasket for 1978-1989 Harley Keihin carburetors. Replaces Harley p/n 27707-78. Gasket fits in between carburetor and the stock 2-bolt manifold flange or spacer block.Sold each, requires 2 if used with a spacer block. For use with stock manifold and butterfly style carburetor, or when using a flange adapter to to attach newer carburetors to the stock 2 bolt manifold on big twin Shovel, pre-1990 Evo, or pre-1989 Sportster models. ...

EZ-Just for Harley butterfly carburetor
Price: $18.95
Retail: $24.95
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CV Performance Item #: CVP-EZ001K -

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 burning your hands or fumbling with a screwdriver. Compatible only with pre-1987* 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....