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Mikuni RS Series Carburetor Racks

The Mikuni RS Series Carburetors were designed and built in response to the needs of the world’s top motorcycle road race and drag race teams. They required carburetors which could satisfy the precise fuel metering demands and high flow volume required by highly modified race engines. And yet, also provide the smooth, controllable throttle response that is needed by any rider pushing his motorcycle to its limits on the race track and under any high performance applications. The carburetors need to meter fuel correctly under a wide range of atmospheric conditions and engine tuning modifications while being easily accessible for trackside   tuning changes which need to be made quickly. Designed for in-line four cylinder performance motorcycle applications, the Mikuni RS Series Radial Flat Slide Carburetors offer superior horsepower gains with their maximum flowing smoothbore induction tract and radial flat slide design. An adjustable accelerator pump system helps to provide instant throttle response, particularly in the lower RPM range. The RS Series Carburetors feature a compact design which is 25% lighter than other performance carburetors and uses readily available Mikuni jets. Available in 34, 36, 38, and 40mm sizes.

Standard Tuning Specifications
Mikuni Rack Part Number Partial Application List Carb Spacing (A-B-C)
Shaft Part Number
Engine Side Spigot OD Main Jet
(100.604 Series)
Jet Needle
Clip Position
Needle Jet
(568 Series)
Pilot Jet
(VM28/486 Series)
Pilot Scew Turns
RS34-D21-K GSX-600 1988
GSX-R750 to 1990
GS750 All Years
KZ750/4 
77-93-77
(700-17011)
40mm 115 9DZH1
(-3)
P4 17.5 1/4-1/2
RS36-D3-K GSX-R750 to 1990
GSX-R1100 to 1990
GS1000-GS1150
KZ1000-KZ1100
77-93-77
(700-17011)
42mm 120
120
130
130
9DZH1
(-3)
P4 17.5 1/4-1/2
RS38-D19-K GSX-R750 to 1990
GSX-R1100
GS1000-GS1150
KZ1000-KZ1100
77-93-77
(700-17011)
42mm 135
135
135
135
9CHY3
(-2)
Y6 17.5 1/4-1/2
RS40-D1-K GSX-R to 1990 (Race)
GS1000-GS1150 (Race)
KZ1000-KZ1100 (Race)
77-93-77
(700-17011)
44mm 140 9CHY3
(-3)
Y6 17.5 1/4-1/2

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4 Item(s)

  1. Mikuni RS 34 Carburetor Rack RS34-D21-K
    $787.50

    RS34-D21-K

    Genuine Mikuni

    Japan

    34mm

    Flat Slide

    Spigot

    Top

    Yes

  2. Mikuni RS 36 Carburetor Rack RS36-D3-K
    $815.50

    RS36-D3-K

    Genuine Mikuni

    Japan

    36mm

    Flat Slide

    Spigot

    Top

    Yes

  3. Mikuni RS 38 Carburetor Rack RS38-D19-K
    $815.50

    RS38-D19-K

    Genuine Mikuni

    Japan

    38mm

    Flat Slide

    Spigot

    Top

    Yes

  4. Mikuni RS 40 Carburetor Rack - Race RS40-D1-K
    $815.50

    RS40-D1-K

    Genuine Mikuni

    Japan

    40mm

    Flat Slide

    Spigot

    Top

    Yes

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4 Item(s)

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