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
Sale: $8.95
Retail: $14.95
Was: $9.95
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(3)
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. 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. Replaces Harley p/n...

CVP Harley Fuel Inlet Elbow
Sale: $16.95
Retail: $25.95
Was: $18.95
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(9)
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 30% – 40% when used with 5/16" fuel line. Single piece brass design will not break or leak like stock plastic-end replacement fuel elbows. Compatible with all Harley CV (constant velocity) and Harley Keihin butterfly style carburetors 1981-2006. Includes a replacement stainless steel hose clamp.--> SALE - only $16.95 Instructions on replacing the fuel...

Accelerator Pump Boot Seal 27311-76
Sale: $2.95
Retail: $6.95
Was: $3.95
Availability: In Stock
CV Performance Item #: CVP-ACCBOOT-2731176 -

-->Accelerator Pump Boot Seal for Harley carburetors. OE 237311-76A prevents dust and debris from collecting inside the accelerator pump while keeping the pump shaft clean and dry. Replaces Harley OE p/n 237311-76 and 237311-76A or 27311-76-A found on 1989-2006 Harley CV40 carburetors and 76-89 Harley butterfly carburetors with an accelerator pump. Sold each one per package. ...

Harley Fuel Inlet Elbow 27371-76A
Sale: $10.95
Retail: $18.95
Was: $18.95
Availability: In Stock
CV Performance Item #: CVP-INLET-2737176A -

Harley brass fuel inlet elbow replaces the stock fuel inlet on Harley CV 40mm carburetors and earlier Harley Keihin butterfly carburetors. Direct replacement for OE p/n 27371-76A. Accepts stock size 1/4" fuel hose while improving flow by up to 20% when compared to stock inlet fittings. Our high quality fuel inlet is NOT a repurposed plumbing fitting commonly sold elsewhere (eBay etc). Compatible with all Harley CV40 and Harley Keihin butterfly style...

CVP Idle Speed Screw
Price: $18.95
Retail: $27.95
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Availability: In Stock
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...

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....

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. ...