CV Performance
Improving the Performance of your Harley Motorcycle

Carburetor parts for original Harley (Keihin) CV 40mm carburetors.


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Harley EZ-Just mixture screw from CV Performance
Price: $19.95
Retail: $26.95
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(20)
Availability: In Stock
CV Performance Item #: CVP-EZ001 -

The original EZ-Just® mixture screw for Harley CV carburetors adjusts the air idle mixture. Easily tune and adjust your idle mixture without burning your hands or fumbling with a screwdriver. CV Peformance has exclusively provided Harley riders with the EZ-Just® for over 28 years. Special through - only $19.95 There is only one original EZ-Just®Beware of cheap import knock offs! Read more below.  Compatible with all Harley CV style carburetors and replaces the stock mixture screw....

Harley CV Carburetor renewal kit
Price: $16.95
Retail: $21.95
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(1)
Availability: In Stock
CV Performance Item #: CVP-CVRENEW -

Introducing our exclusive Basic Renewal Kit for 92-06 Harley CV style carburetors. The kit contains the most commonly replaced quality seals needed to renew your Harley CV carburetor. For use with all 1992-2006* Big Twin and XL models using the late model Harley CV 40 carburetor. SALE - only $16.95 CVP Accelerator Pump Diaphragm- Superior material outlasts many other diaphragms.- Resists the harmful effects of modern pump gas.- Replaces OEM 27361-76A Float needle...

Harley Carburetor Vacuum Slide
Price: $48.95
Retail: $70.95
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(11)
Availability: In Stock
CV Performance Item #: CVP-SLIDE -

Complete vacuum slide assembly for Harley CV carburetors. Replaces original H-D p/n #27585-88. Slide replacement is recommended when the diaphragm eventually becomes pinched or torn, or if the vacuum port hole has been modified by drilling 1/8" or larger causing driveability problems. New and improved! Our slide is now tumble polished and uses a stronger diaphragm for improved durability. Fits all Harley CV 40 carburetors: Big Twin 1990-2006 or Sportster 1989-2006. Not for use on other Keihin...

CVP Velocity Emulsion Tube for Harley Carburetors
Price: $14.95
Retail: $19.95
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(1)
Availability: In Stock
CV Performance Item #: CVP-VTUBE -

CVP's exclusive Velocity Emulsion Tube is a direct replacement for the stock Harley CV carburetor emulsion jet holder. Specially designed to provide a fine vortex pattern atomized mist for an optimal air/fuel mixture without impacting mileage. Unlike some aftermarket tubes, the Velocity Tube accepts both H-D factory and OEM replacement main jets for ease of tuning. Available for all 1989-2006 Big Twin, Twin Cam, and Sportster models using Harley CV style carburetors. Direct replacement for H-D...

Harley CV Carburetor Basic Renewal Kit 89-91 CV carburetor basic renewal kit, carburetor, repair, rebuild, harley, 1989-1991
Price: $16.95
Retail: $22.99
Availability: In Stock
CV Performance Item #: CVP-CVRENEW-89-91 -

Introducing our exclusive Basic Renewal Kit for early model 89-91 Harley CV style carburetors. The kit contains the most commonly replaced quality seals needed to renew your Harley CV carburetor. For use with 1990-1991* FL/FX Big Twins and 1989-1991 XL models using the early model Harley CV 40 carburetor with 2-piece bowl seals (see photo). Spring Special - only $16.95 CVP Accelerator Pump Diaphragm- Superior material outlasts many other diaphragms.- Resists the harmful effects...

Harley Carburetor Main Jet
Price: $4.30
Retail: $5.75
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(1)
Availability: In Stock
CV Performance Item #: CVP-MJ -

Precision American made main jets for Harley CV and CVK carburetors. Sizes #170, 175, 180, 185, 190, 195, and 200.CVP jet quality exceeds OEM and imported carburetor jets.Note: Main jets supplied by CVP are sized to original OE specifications from H-D and Keihin. If using with a DynoJet kit or various aftermarket jet holders (emulsion tube) the threads will not match. Always use an OE holder/tube or the CVP emulsion tube with CVP brand jets.  Not for use or sale in California...

Harley Carburetor Pilot Jet
Price: $4.45
Retail: $5.50
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(1)
Availability: In Stock
CV Performance Item #: CVP-PJ -

Precision American made pilot jets for Harley CV and CVK carburetors. Sizes #42, 44, 45, 46, 48, and 50.CVP jet quality exceed OEM and imported carburetor jets. Not for use or sale in California SIZE Original Harley P/N Keihin P/N #42 27171-89 N424-25B-42 #44   N424-25B-44 #45 27170-89 N424-25B-45 #46   N424-25B-46 #48 27165-90 N424-25B-48 #50   N424-25B-50 ...

Harley CV Carburetor Rebuild Kit
Price: $24.95
Retail: $32.95
Availability: In Stock
CV Performance Item #: CVP-CV40RBLD -

Introducing our exclusive Premium Rebuild Kit for Harley CV Carburetors. The kit contains all of the vital seals and gaskets needed to rebuild your Harley CV carburetor. Our kit contains only premium quality seals and gaskets that exceed original factory standards. For use with all 1990-2006 Big Twin or 1989-2006 XL models using the Harley CV 40 carburetor. Replaces factory rebuild kit 27006-88 Unlike inferior mass produced kits and imports sold everywhere else, our...

CVP Harley Mixture Packing Kit
Price: $9.95
Retail: $12.95
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(3)
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...

Harley CVP carburetor needle
Price: $14.95
Retail: $17.95
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(6)
Availability: In Stock
CV Performance Item #: CVP-NDL -

Designed to cure hesitation and deliver even throttle response, the CVP Velocity Needle is a direct replacement for stock Harley slide needles. CVP's custom needle outperforms factory needles while eliminating trial and error tuning. No clips or shims to mess with, simply install and ride! CNC machined from aircraft quality billet aluminum for precision and durability. Available for all Harley constant velocity (CV) carburetors on 1989-2006 Big Twin and Sportster models. Not for use or sale in...

Harley Float valve
Price: $12.95
Retail: $27.95
Availability: In Stock
OE Item #: CVP-FLTVLV4 -

4-Sided Float fuel valve w/clip for 1989-2006 Harley CV carburetors. Replacement for OEM p/n 27886-78A. Worn float valves are the most common cause of bowl overflows and engine flooding. Refer to the float level setting diagram when installing. The setting must be adjusted since some float needle valves may be longer or shorter than others (factory made 2 versions, same number). This item is the 4-sided version however both 3 and 4 sided float valves are stated to work by the factory. All...

Accelerator Pump Diaphragm for Harley carburetors
Price: $9.95
Retail: $14.95
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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: $17.25
Retail: $25.95
Was: $17.95
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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 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 (contant 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, ends...

Harley manifold boot seal
Price: $9.25
Retail: $13.95
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(3)
Availability: In Stock
CV Performance Item #: CVP-INTBOOT -

CVP's exclusive Premium Intake Manifold Boot Seal for Harley CV carburetors. Finally a manifold boot seal that seals correctly! Boot seal mates the CV40 carburetor spigot end to the stock slip-fit Harley manifold.  Improved fit for a positive seal on all Harley models using slip fit (spigot) CV carburetors. Greater resistance against drying and cracking. Firmly provides a tight leak-free seal to cure vacuum leaks.   Replaces the old factory boot seal between the carburetor and...

Harley N65 needle
Price: $15.95
Retail: $17.95
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(2)
Availability: In Stock
CV Performance Item #: CVP-NDL65 -

A direct replacement for the factory discontinued Harley N65C needle. The classic N65C needle was originally fitted to the first CV carburetor on 1988 Harley-Davidson Sportsters that lacked an accelerator pump, therefore requiring a needle with a richer profile just off idle to overcome the lean stumble. For years tuners and techs have used the N65C needle to custom tune all model Harley CV carburetors to deliver the optimal amount of fuel just off idle, smooth acceleration, and eliminate...

Accelerator Pump Boot Seal 27311-76
Price: $2.75
Retail: $4.95
Availability: In Stock
CV Performance Item #: CVP-BOOT-2731176 -

Accelerator Pump Boot Seal for Harley carburetors. Prevents dust and debris from collecting inside the accelerator pump while retaining any silicone lube used on the pump shaft.  Replaces Harley OE p/n 237311-76 and 237311-76A found on 1989-2006 Harley CV40 carburetors and and Harley butterfly carburetors with an accelerator pump. Sold each one per package.  Will not fit on non-Harley model carburetors. Image may differ from the actual product.    ...

Harley Carburetor Rebuild Kit (import) CV carburetor rebuild kit, carburetor, repair, rebuild, harley, 27006-88
Price: $19.95
Retail: $26.95
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(2)
Availability: Out of Stock
Item #: CVP-RPR89 -

Rebuild kit for Harley CV style carburetors. Imported by Cycle Pro LLC*. CLEARANCE - Discontinued Closeout item - Out of Stock Alternate part: Premium CV Carburetor Rebuild Kit or  CVP Renewal Kit  We have a limited supply of these import style kit from a dealer closeout.  Kit is supplied as an OEM parts-only kit and may require a factory service manual to properly install all components. Only for use on Harley CV carburetors, will not fit CVK model carburetors. Contains import...

Harley fuel hose
Price: $8.95
Retail: $9.95
Availability: Out of Stock
OE Item #: HOSE-516 -

5/16 Fuel line for use with high flow inlets and fuel valves.  Made in the USA 5/16" I.D. x 9/16" O.D. Black neoprene line is reinforced with a high strength rayon mesh Resists fuel additives and short term use of pump gas with E10 Ethanol* Maximum PSI of 200 with a burst pressure of 450 PSI Use with CVP Fuel Inlet or other brass/steel type inlet elbows**  Length provided to fit all Harley carbureted models NOT for use on fuel injected models. Ideal for high volume...

Cometic Harley Intake Manifold Seal 26995-86B
Price: $5.25
Retail: $9.99
Availability: In Stock
Cometic Item #: 82904 -

Cometic Manifold Intake Seal Manifold intake seal installs between each head intake port and the manifold. Genuine Cometic Seal, Made in the USA! Provides a positive seal for all Harley intake manifolds. Resists drying and cracking. Replaces HD# 26995-86B compression seal between the head and manifold. Sold each, purchase of 2 seals required per installation.Fits:Big Twin Evolution 1990/1999, Twin Cam 1999/Later, and Sportster 1986/Later. Replaces Harley OE p/n 26995-86B. Refer to your service...

Harley carburetor chrome cover
Price: $17.95
Retail: $22.95
Availability: In Stock
V-Factor MID-USA Item #: VF-82307 -

Chrome plated CV Carburetor top cover with chrome mounting screws. Fits Big Twin 1990/Later & Sportster 1988/Later. Replaces HD# 27040-88 & 27129-88 Limited Time - only $17.95 Imported by MID-USA® ...

Harley 27577-88 Carburetor Bowl Seal
Price: $6.25
Retail: $12.95
Availability: In Stock
CV Performance Item #: CVP-27577-88 -

Carburetor bowl gasket seal for early model 1989-91 Harley CV style carburetors. Replaces OE p/n 27577-88. For use with 1990-1991* FL/FX Big Twins and 1989-1991 XL models using the early model Harley CV 40. Special - only $6.25 Bowl Gasket Seal *- Quality seal replaces dried or cracked bowl seal.- Replaces p/n 27577-88* *For use on 1989-91 Harley CV carburetors only that uses a separate o-ring around the accelerator pump nozzle (not included). Bowl seal will NOT fit...

CVP Idle Speed Screw
Price: $18.95
Retail: $27.95
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(3)
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...

CV carburetor chrome cover
Price: $15.25
Retail: $18.95
Availability: Out of Stock
HARDDRIVE Item #: 820-2682 -

Chrome plated CV Carburetor top cover with louvered top. Stainless steel mounting screws. Fits Big Twin 1990/Later & Sportster 1988/Later. Replaces HD# 27040-88 & 27129-88 Special through - only $15.25 Imported byHardDrive® ...

Harley CV carb slide spring
Price: $7.95
Retail: $8.95
Availability: In Stock
CV Performance Item #: CVP-SPR08 -

CVP performance slide spring for Harley CV carburetors and Keihin CVK40. Special tension design provides improved throttle response while eliminating "slide bounce" encountered with cut or shortened race model springs. American made from stainless steel and available for the following CV carburetor models:1989-2006 Big Twin and Twin Cam1988-2006 Sportster 883-1200 models1987-2018 KLR650 using Keihin CVK40Improves performance and throttle response without the need to drill the original slide....

Harley 27577-88 Carburetor Bowl Seal
Price: $6.75
Retail: $15.95
Availability: In Stock
CV Performance Item #: CVP-CVK-920551222 -

Carburetor bowl gasket seal for Kawasaki CVK 40 carburetors. Replaces OE p/n 92055-1222. For use with 1987-2004 Kawasaki models using the Keihin CV40. Commonly found on KLR650 models and some Vulcan models. Also fits various Triumph and Suzuki models, see part numbers below.  Special - only $6.75 Bowl Gasket Seal - Quality seal replaces dried or cracked bowl seal.- Replaces Kawasaki p/n 92055-1222, Suzuki p/n 13258-26E00, Triumph p/n T1241036...

Harley CV carburetor needle jet
Price: $12.95
Retail: $17.95
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(2)
Availability: In Stock
CV Performance Item #: CVP-NDLJET -

The CVP Needle Jet is a direct replacement for stock Harley needle jet (nozzle) found on all CV40 carburetors. CNC machined from stainless steel and is a perfect replacement for jet nozzles worn from aftermarket adjustable needles, high mileage, or to replace lost/misplaced parts. The Needle Jet nozzle is mandatory for correct fuel spray as the needle lifts during normal acceleration. Available for all constant velocity (CV) carburetors on 1989-2006 Big Twin and Sportster...

Harley choke cable
Price: $17.95
Retail: $21.95
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(2)
Availability: Out of Stock
OE Item #: CVP-CHKCABLE -

Enrichener choke cable for Harley CV carburetors. Replaces original p/n #29229-88D short style cable and all other Harley CV enrichener cables where a short style cable is required. The OE short cable is ideal when used with our choke bracket to prevent interference with the fuel elbow. Replacement for Harley p/n 29229-88D Fits all Harley CV carburetors: Big Twin 1990-2006 or Sportster 1989-2006.* Includes the cable, knob, and fastening nuts as shown. Must use your original elbow and plunger...

CVP Accelerator Pump Screws
Sale: $6.25
Retail: $6.95
Was: $7.95
Availability: In Stock
CV Performance Item #: CVP-ACCHDWR -

Replacement screw kit for the accelerator pump cover on Harley CV carburetors. Stock factory screws commonly strip after removal. These quality screws will stand up to repeated removal and all weather conditions. Includes 3 stainless steel socket head screws, 3 washers, and a metric hex key. Will fit 89-06 Harley CV style carburetors only.

Harley carburetor bowl hardware
Price: $7.65
Retail: $8.75
Availability: Limited Stock
CV Performance Item #: CVP-HDWR -

Replacement screw kit for the float bowl screws found on Harley CV carburetors and KLR650 CVK40 carburetors. Replace those stock factory screws which commonly strip after removal. These quality stainless steel screws will stand up to repeated removal and all weather conditions. Includes stainless steel socket head screws, washers, and a metric hex key. Note that appearance of all products are subject to change. 

CV carburetor 3-sided float valve
Price: $8.95
Retail: $19.95
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(1)
Availability: Limited Stock
Item #: CP-FLTVLV3 -

Float fuel valve w/clip for 1990-2006 Harley CV carburetors. Replacement for OEM p/n 27886-78A. *3-Sided OE replacement version. Worn float valves are the most common cause of bowl overflows and engine flooding. *Only order if you are replacing a 3-Sided valve. Not for use where 4-side valves are previously installed. Note: This item is OEM and therefore requires use of a factory service manual to install if not already familiar with the procedure. We also carry the 4-sided version...

Kawasaki KLR 16030-1057 float valve
Price: $23.95
Retail: $45.95
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(1)
Availability: Limited Stock
OE Item #: CVP-FLTVLV-KLR650 -

Float fuel valve w/clip for 1988-2018 Kawasaki CVK40 carburetors. Commonly found on KLR650 models. Replacement for Keihin / Kawasaki part number 16030-1057.  Note: See your factory service manual or consult a service technician if not already familiar with the service procedures required for installation.  Fits various Kawasaki models, verify your model accepts part number 16030-1057 before purchase.  We are unable to exchange float valves if you order the...

CVP Accelerator Pump Nozzle
Price: $17.95
Retail: $21.95
Availability: In Stock
CV Performance Item #: CVP-ACCPED -

CVP's low profile accelerator pump pedestal nozzle for CV carburetors promotes a more laminar flow in the carburetor inlet reducing turbulence and providing a spray directed into the lower center of the venturi below the slide. Includes the pedestal and replacement bowl hardware. Installation instructions. Note: requires use of your original check valve or check needle previously installed under the original pedestal. The check valve is not available as either factory original or...

Harley Carburetor Vacuum Slide
Price: $23.95
Retail: $49.95
Availability: Out of Stock
CV Performance Item #: CVP-SLIDE-BLEM -

SPECIAL: Blemished version of our popular CV carburetor slide.  This slide is perfectly functional although they may be discolored, unpolished, or have other blemishes on the casting. These are minor visual blemishes that do not impact function or performance and are not considered a defect. Perfect for shops performing carburetor service or customers not concerned with parts that have some minor cosmetic blemishes. Limited quantity at this discount.  Complete vacuum slide assembly...

CV carb flange adapter
Price: $34.95
Retail: $38.99
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(1)
Availability: In Stock
HARDDRIVE Item #: 820-50526 -

Adapts Harley CV carburetors or Mikuni HSR42 to early stock and aftermarket 2-bolt manifolds. No need to change manifolds when swapping out old style carburetors. Precision machined billet aluminum Uses slip on boot seal (not included) used with all Harley CV and Mikuni HSR carburetors. Allows attachment of modern spigot mount carburetors to flange style manifold. For use with HSR42 Mikuni or Harley CV Carburetor only. Requires use of a manifold boot seal, flat flange gasket, and existing...

Harley Air Cleaner Gasket Harley Air Cleaner Gasket, cv, carb, carburetor, motorcycle, harley, sportster, twin cam, aircleaner, 29059-88
Price: $1.90
Retail: $2.95
Availability: In Stock
CV Performance Item #: CVP-ACGCV1 -

Air cleaner backing gasket for 1990-2006 Harley CV carburetors. Replaces Harley p/n 29059-88. Will also fit Delphi fuel injected models (except 08+ touring). Temporarily out of stock For use with stock and aftermarket air cleaner assemblies. ...