Mikuni Smoothbore Carburetor - 42mm KIT

Mikuni smoothbore 42mm carburetor kit engineered for custom V-twin applications. The 42mm bore fits a wide range of modified engines and now uses OEM Harley cables for direct integration into Harley and Indian builds.

Features

• 42mm smoothbore design for custom V-twin engines
• Compatible with OEM Harley throttle cables
• Tunable jetting for performance builds
• Compact footprint suitable for tight engine bays

Specifications

• Brand: Mikuni
• Manufacturer Part #: FTM42-6
• Length: 6.2 in
• Width: 6.4 in
• Height: 6.6 in
• Weight: 2.89 lbs
• Country of Origin: Japan

Fitment

Fits V-twin motorcycles with custom or modified intake manifolds. Works with OEM Harley cable-operated throttles.

Frequently Asked Questions

Will this fit my stock Harley or Indian?

This is designed for custom and modified engines. Stock OEM bikes use factory carbs. Verify your intake manifold compatibility before ordering.

What size is this carburetor?

This is a 42mm smoothbore carb. Mikuni also offers a 45mm version for engines requiring maximum flow.

Does it use Harley throttle cables?

Yes — this kit is configured to work with OEM Harley throttle cables for direct bolt-in integration.

Are manifolds included?

No — intake manifolds are sold separately. You'll need to source a manifold compatible with your engine and this 42mm carb.

What's the weight and dimensions?

6.2 in long, 6.4 in wide, 6.6 in tall, weighing 2.89 lbs — compact enough for most custom engine bays.