Mikuni HSR 45/42 Total Carburetor Kit - 45mm KIT EVO W/O Mfld — Harley-Davidson (1984-1999)

Mikuni HSR 45/42 Total Carburetor Kit delivers high-flow intake for Big Twin EVO and Twin Cam engines, with a special manifold, rubber flange, and high-flow air filter rated to 100 hp. Complete bolt-on solution without manifold clamps or seals.

Features

• Special intake manifold included
• Rubber flange gasket
• High-flow air filter rated to 100 hp
• Fits HSR42 or HSR45mm carburetors
• Breather kit included for 1993-1999 models

Specifications

• Brand: Mikuni
• Manufacturer Part #: F45-3
• Length: 8.9 in
• Width: 16 in
• Height: 5.7 in
• Weight: 8.36 lbs
• Country of Origin: Japan

Fitment

Fits Harley-Davidson Big Twin EVO (1984-1999) and Twin Cam (2000+) models. Note: 1984-1989 EVO models require cable assemblies from 1990-1995 models. Breather kit included for 1993-1999; earlier models need external sourcing.

Frequently Asked Questions

What's included in the kit?

Special intake manifold, rubber flange, high-flow air filter, and breather kit (for 1993-1999 models). Manifold clamps and seals sold separately.

Do I need to buy manifold clamps and seals separately?

Yes — this kit does not include manifold clamps or seals. Source these separately for your specific model.

Will this fit my 1984-1989 EVO?

Yes, but you'll need cable assemblies from 1990-1995 models to complete the installation.

What carburetor sizes work with this manifold?

The manifold accommodates both HSR42 and HSR45mm carburetors; you choose which one to pair with the kit.

Is retuning required after installation?

A carburetor tuning may be needed depending on your engine modifications and riding conditions.