Air and Fuel› Carburetors and Components

Mikuni

45mm HSR Smoothbore Carburetor

$678.93

SKU: TM45-2PK

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Mikuni TM45-2PK is a 45mm HSR smoothbore carburetor designed for high-performance engine builders. It offers excellent throttle response and control, with a polished finish for aesthetic appeal. This carburetor is made in Japan and built for years of dependable service.
Show original supplier description
The Mikuni TM45-2PK HSR Smoothbore Carburetor is engineered for performance engine builders requiring a standalone carburetor for custom and race applications. Featuring a 45mm bore and a polished finish, this unit is designed to deliver excellent throttle response, improved acceleration, and increased power and torque. Constructed with smoothbore, flatslide technology and roller bearings, this carburetor provides peak performance from idle to wide open throttle. It is well-made for years of dependable service and is manufactured in Japan. The carburetor includes a choke cable, and its polished/chrome versions come with the choke cable, whereas natural finish versions do not. This carburetor is not for use on models equipped with cruise control. It is noted that some Harley Davidson applications can utilize the original CV carb intake manifold, choke cable, air cleaner, and throttle cables for a more direct fit.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandMikuni
Part NumberTM45-2PK
CategoryAir and Fuel
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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