Mikuni RS Series Carburetor Racks
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| 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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