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CV Performance EZ-Just Mixture Screw

The original prototype was first developed in the 1980s to eliminate the need for carburetor removal by technicians when making adjustments, and was later adapted when the CV carburetor became the standard on Harleys. The new mixture screw quickly grew in popularity and became known as the EZ-Just 25 years ago.

CV Performance Harley Main and Pilot Jets

CV Performance offers new brass pilot and main jets for Harley CV and CVK carburetors. These jets are machined to perfection so they can be installed without a problem and you can enjoy a well-tuned engine immediately.

CV Performance Harley-Davidson Main and Pilot Jets 

CV Performance offers new brass pilot and main jets for Harley CV and CVK carburetors. These jets are machined to exacting specifications and can be installed without a problem.

CV Performance Intake Manifold Boot Seal for Harley CV Carburetors

CV Performance’s new Premium Intake Manifold Boot Seal for Harley CV carburetors are guaranteed to provide a snug and leak-free fit since they are manufactured to exacting specifications.

CV Performance Premium Intake Manifold Boot Seal for Harley CV Carburetors

CV Performance introduces its new Premium Intake Manifold Boot Seal for Harley CV carburetors. Old, worn, or even some aftermarket manifold boot seals can be loose or fail to provide a tight seal between the manifold and the CV carburetor, resulting in vacuum leaks and poor tuning performance.

CV Performance Stainless Steel Idle Speed Screw

Adjust your idle speed by hand without the need for a screwdriver with a stainless steel idle speed screw from CV Performance. Designed and engineered specifically to replace the factory original, this CVP speed screw is compatible with all Harley CV and Keihin butterfly style carburetors from 1981-2006.

CV Performance Harley-Davidson Accelerator Pump Diaphragm

The new CV Performance Premium Accelerator Pump Diaphragm for Harley carburetors is a direct replacement for the stock OEM diaphragm. The exclusive CVP Diaphragm replaces worn or cracked diaphragms on Harley CV and Harley Keihin “butterfly” carburetors, as well as S&S Super E/G Carbs.

CV Performance Premium Accelerator Pump Diaphragm

As a direct replacement for the stock OEM diaphragm, the exclusive CV Performance Diaphragm replaces worn or cracked diaphragms on Harley CV and Harley Keihin “butterfly” carburetors, as well as S&S Super E/G Carbs.

CV Performance Harley CV Carb Vacuum Slide

CV Performance, specializing in tuning and improving Harley-Davidson CV carburetion for over 25 years, is now offering the new CV Performance Vacuum Slide for Harley CV carburetors as a direct replacement for the stock OEM slide. The vacuum slide in a CV Carb controls or influences the majority of the carb functions.