Ultimate Performance Mikuni HSR48 Smoothbore Carburetor for Big Twins


Mikuni’s high performance HSR48 Flat Slide Racing Carburetor is the must have for any highly tuned increased displacement Big Twin motorcycle engine. This 48mm smooth-bore carburetor offers the highest air flow possible while providing highly accurate fuel metering, more power, and Mikuni’s renowned precision throttle response. A new extended main jet and larger fuel valve assure ample fuel supply for very powerful and larger displacement engines.

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The HSR48 offers all the same features and big performance gains as the popular Mikuni HSR42 & HSR45 Carburetors for stock and mildly modified Harley-Davidson and other V-Twins. All HSR carburetors are designed with an 8-roller bearing flat throttle slide assembly that allows an unobstructed venturi at full throttle to flow more air, while it mixes fuel more precisely at all throttle settings. Mikuni’s roller bearing throttle slide offers smoother throttle control and allows the use of a lighter throttle return spring for reduced throttle effort. And the Mikuni adjustable accelerator pump provides instant throttle response in any riding or performance application. While a high capacity float bowl prevents fuel starvation even under full throttle applications. The new HSR48 comes complete with rubber mounting flange, choke cable, remote idle adjuster and additional jetting.

Mikuni Aftermarket Carburetors and Tuning Components are sold “As Is” for Off Road / Racing Use Only and are not intended or approved for use on vehicles operated on Public Roads or in Locations where applicable engine tampering and anti-pollution laws apply. Mikuni Carburetors, Tuning Components, Replacement Parts and Rebuild Kits and available from Mikuni Dealers and Distributors in the USA and Worldwide and are shown in the complete Mikuni Carburetor Products Catalog onwww.MikuniPower.com.

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