Hi-Flo Carb Backing Plate Adaptors
Billet Aluminum CNC machined plates adapt HSR-42 & 45 Mikuni carbs to S&S manifolds. Precision machined bore tapers from Mikuni outlet diameter to S&S manifold inlet size. Substantial flow increase using S&S’s large plenum intake manifold. Ideal for stroker & big
bore motors that require odd length intake manifolds. S&S intake manifolds are available for all length cylinders. Includes O-ring
and metric hardware.
#69-129 HSR-42 Mikuni to S&S Super “B” & “E” manifolds.
#69-130 HSR-45 Mikuni to S&S Super “B” & “E” manifolds.
#69-131 HSR-45 Mikuni to S&S Super “G” manifolds.
#69-122 HSR-48 Mikuni to S&S Super “G” or “D” manifolds.
Crankcase Head Breather Kits
For the installation of HSR Carburetor Kits using the Mikuni K&N high flow filter on Big Twins and Twin Cams.
#42-447 To mount HSR42/45 carb and filter to Evo Big Twins, includes the new chrome banjos, vent bolts and brackets.
#42-448 To mount HSR42/45 carb and filter to Twin Cam engine, includes the new chrome banjos, vent boltsand brackets.
Carb Rebuild Kits for HSR 42/45/48
All the necessary parts and gaskets to freshen up an HSR carb.
Includes needle valve assembly, O-rings, gaskets and screws.
sold as kit
#42-445 Rebuild kit for HSR42/45 carb w/4.2 needle valve & exploded view instructions.
#42-446 Rebuild kit for HSR48 carb w/4.5 needle valve & exploded view instructions.
Mikuni Throttle Cables
HSR42/45 Carb kits sold from 1994 to 1999 required special Mikuni throttle cables. HSR42 carbs manufactured after May 1999, and HSR45 manufactured after March 2000 use stock HD cables.
#42-452 Open throttle cable, 70’-95’, 38 inch screw-in type.
#42-453 Close idle cable, 70’-95’, 38 inch screw-in type.
#42-454 Open throttle cable, 70’-95’, 47 inch screw-in type.
#42-455 Close idle cable, 70’-95’, 47 inch screw-in type.
#42-456 Open throttle cable, 96’-present, 38 inch push-in type.
#42-457 Close idle cable, 96’-present, 38 inch push-in type.
#42-458 Open throttle cable, 96’-present, 47 inch push-in type.
#42-459 Close idle cable, 96’-present, 47 inch push-in type.
Click below for HSR Caruretor Replacement Parts PDF File:
>> HSR Caruretor Replacement Parts List <<
Click below for Original Mikuni Optional & Replacement Parts,
>> Original Mikuni Replacement & Jetting Parts <<
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