Mikuni Smoothbore Carburetor - 42mm KIT Polished

Mikuni 42mm smoothbore carburetor for custom V-twin motorcycle builds, engineered for modified engines requiring precise fuel metering without sacrificing peak airflow. This kit version features polished finish and works with OEM Harley throttle cables.

Features

• 42mm smoothbore design for custom V-twin applications
• Polished finish
• Compatible with OEM Harley throttle cables
• Manifolds sold separately

Specifications

• Brand: Mikuni
• Manufacturer Part #: FTM42-6PK
• Bore Size: 42mm
• Length: 5.8 in
• Width: 9.9 in
• Height: 5.2 in
• Weight: 3.51 lbs
• Country of Origin: Japan

Fitment

Fits custom V-twin motorcycle builds. Works with OEM Harley throttle cables. Manifolds are sold separately.

Frequently Asked Questions

Will this fit my stock Harley or Indian motorcycle?

No — this is a 42mm smoothbore designed for modified custom engines. Stock bikes require different carburetor models.

Do I need an intake manifold?

Yes. Manifolds are sold separately and must be sourced to match your engine's port configuration.

Are OEM Harley throttle cables compatible?

Yes. This carb is designed to work directly with OEM Harley throttle cables without adapters.

What's the difference between 42mm and 45mm?

The 42mm is suited for a wider range of custom applications. The 45mm is for heavily modified engines requiring maximum fuel flow.

Is tuning required after installation?

Yes. Carburetor jetting and needle positions must be tuned to your specific engine displacement, camshaft, and intake configuration.