Mikuni HSR Smoothbore Carburetors: 42 & 45mm ‘Total’ Kit

The HSR Mikuni carburetor is a slide-type, smoothbore carburetor equipped with a roller-bearing two-piece slide for smooth and easy throttle pull. Features include a large capacity float bowl and high flowing needle-valve assembly. Tuning adjustments are made via slide needles, main and pilot jets and an adjustable accelerator pump. Three sizes are available; 42, 45 and 48mm. The 42mm is recommended for 74-95” engines, 45mm for 95-107” engines and 48mm for 107” and larger engines. Throttle spool uses stock 1990-up CV cables.

42 & 45mm ‘Total’ Kits: These kits are complete with everything needed for a total installation. Kits include carburetor, manifold, rubber mounting flange (45mm), K&N air filter, vented chrome cover, crankcase breather kit and mounting hardware. Stock throttle cable from 1990 and later models can be used. ‘84-’89 models will need ‘90-’95 style cables.

Not legal for sale or use in California on any pollution controlled motor vehicle.
Not legal for sale or use on any EPA pollution controlled motor vehicle.