Cycle Pro 40mm CV Carburetor

Cycle Pro 40mm CV carburetor, a complete reproduction of the OEM Keihin CV 40mm designed for V-twin motorcycles. Comes fully assembled with upgraded internals including an improved emulsion tube and slide spring, plus a jet assortment and tuning guide.

Features

• Brand new, fully assembled carburetor
• Upgraded emulsion tube for better atomization
• Upgraded slide spring for improved throttle response
• Complete jet assortment included for main and pilot circuits
• Idle air mixture screw for fine tuning
• Full instruction sheet with tuning suggestions
• 8 in × 8 in × 2 in compact profile

Specifications

• Brand: Cycle Pro
• Manufacturer Part #: 30100
• Carburetor Type: CV (Constant Velocity) 40mm
• Length: 8 in
• Width: 8 in
• Height: 2 in
• Weight: 2.2 lbs
• Country of Origin: China (Mainland)

Fitment

Fits V-twin motorcycles that use a 40mm CV carburetor mounting flange.

Frequently Asked Questions

Is this carburetor brand new or refurbished?

Brand new and completely assembled with Cycle Pro upgrades. Not a rebuild or core return.

What jets are included?

The carburetor ships with a complete assortment of main and pilot jets to cover tuning needs across different engines and altitudes.

Does it come with installation instructions?

Yes — a full instruction sheet is included with tuning suggestions and idle mixture adjustment guidance.

What upgrades does Cycle Pro include?

An upgraded emulsion tube for better fuel atomization and an upgraded slide spring for smoother, more responsive throttle action compared to OEM.

Will I need to retune this carburetor on my bike?

The jet assortment and instruction sheet support tuning for your specific engine. Most installations require some idle and main jet adjustment for optimal performance.