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38mm RS Series Radial Flat Slide Carburetor - RS38-D19-K

  • Part #:
    165128
  • Mfg Part #:
    RS38-D19-K
  • OEM/Ref#:
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38mm RS Series Radial Flat Slide Carburetor - RS38-D19-K

  • Part #:
    165128
  • Mfg Part #:
    RS38-D19-K
  • OEM/Ref#:
MSRP: $958.95

Price: $818.88 15% off!
Make sure this fits your ride
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Ships In 4-5 Business Days

Mikuni 38mm RS Series Radial Flat Slide Carburetor - RS38-D19-K
  • Designed for inline four cylinder performance to offer higher horsepower gains with the worlds top motorcycle road race and drag race teams
  • Offers smooth, controllable throttle response with precise fuel metering demands with high volume fuel/air required by race engines
  • Flat throttle valve design provides the strongest signal for precise and instantaneous throttle response
  • Includes adjustable accelerator pump and adjustable idle screw
  • Adjustable throttle return spring allows spring return pressure
  • Includes enrichment starter system for easier cold starting
  • Jet needle has easy adjustment slots for quick tuning
  • Float bowl vent allows atmospheric pressure into float bowl for fuel flow
  • Accelerator pump spray nozzle shoots fuel directly into the intake tract for immediate engine response
  • Jetting may need to be changed per application
  • Larger diameter spigot O.D.'s may require different mounting flanges, not available through Dennis Kirk
  • Use genuine Mikuni jets and parts for best results
  • Made in Japan


Included Items:

(1) 4 Carburetor unit assembly

(1) 49" L , 12mm ID. X 18mm OD. Black rubber hose

(1) 26" L, 8mm ID x 15mm OD> Black fuel line

(4) 10mm Plugs

(6) Hose clamps

(1) 8mm OD. Brass "T" fitting

(4) #130 Jet

(4) #140 Jet

(8) 7" Black cable ties

Instruction manual

 

 



The Air Resources Board (ARB) does not permit the use of aftermarket emission-related parts that alter the air/fuel ratio of an emission-controlled vehicle. Due to these legal restrictions this part cannot be shipped to California.

Specifications
Mfg #: RS38-D19-K
Part #: 165128
Type Carburetor
Type Carburetor - Flat Slide
Type Manifold Air Pressure Sensor
Units Each
Weight 10.00 lbs
Alternate/OEM Part Number(s):
10020037
Resources & Manuals
Fitment for Mikuni 38mm RS Series Radial Flat Slide Carburetor - RS38-D19-K

Part 165128 fits the following machines

Kawasaki
  • KZ1000A 1977-1978
  • KZ1000A MKII 1979-1980
  • KZ1000B Ltd 1977-1980
  • KZ1000C Police 1978-1981
  • KZ1000D Z1R 1978, 1980
  • KZ1000E ST/Shaft 1979-1980
  • KZ1000G Z1 Classic 1980
  • KZ1000J 1981-1983
  • KZ1000K Ltd 1981-1982
  • KZ1000M CSR 1981-1982
  • KZ1000P Police 1982-1983
  • KZ1000R Lawson Replica 1982-1983
  • KZ1100A 1981-1983
  • KZ1100B GPz 1981-1982
  • KZ1100D Spectre 1982-1983
  • KZ1100L Ltd 1983
Suzuki
  • GS1000G 1980-1981
  • GS1000GL L 1980-1981
  • GSX-R1100 1986-1990
  • GSX-R750 1986-1990
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Would you recommend this product?
Yes (3)
Would you recommend this product?
Yes
38mm RS Series Radial Flat Side Carburetor - RS38-D19-K
Beautiful carbs!
August 1, 2017
Would you recommend this product?
Yes
Flatslide carbs for 1980 KZ1000
I bought the 34mm versions of these carbs and believe 38's are a little too big for the older KZ1000 heads. Mostly, older KZ heads have smallish ports and tiny valves... so a little throttle movement with big carbs makes adjusting this setup 'kinda tricky' - specially at low to mid throttle, and forget about wide open because the head just kan't utilize that much flow IMHO.

FYI the bike I'm working with is a stock engine, 1980 KZ1000 LTD, fitted with stock sprockets and slightly larger (fatter) tires. Aftermarket / modifications are a 4-1 Kerker exhaust (w/mid sized muff), Dynatec ignition, and importantly - I took out the stock air box opting for open type air cleaners over 40mm long velocity stacks. I also made a panel to cover the big open space under the seat - mostly to eliminate turbulence since I knew at higher speeds, air pressure would peel the side covers off. But in blocking that space, the air pressure signal across all 4 carbs became fairly consistent.

Ok, about 3 years ago I was really fussing with stock Mikuni 26mm carbs. Kinda fed up, I talked with two racer friends, and from their input, I installed slightly-smaller 34mm flatslides. Initial out-of-da-box operation proved the carbs are really rich, so changed pilot to 12.5's and left mains for now.
This combo has proven to be very impressive; really great throttle response, smooth transition across all throttle positions, and plenty of juice at WOT. Surprisingly the bike has good gas mileage when cruising. Had to my ah-ha! moments here.. ;-)
-Steve.
1980 KZ1000 LTD
1980 KZ1000 LTD
September 25, 2020
Seattle, WA
Ride:
1980 KZ1000 LTD
Would you recommend this product?
Yes
Flatslide carbs for 1980 KZ1000
I bought the 34mm versions of these carbs and believe 38's are a little too big for the older KZ1000 heads. Mostly, older KZ heads have smallish ports and tiny valves... so a little throttle movement with big carbs makes adjusting this setup 'kinda tricky' - specially at low to mid throttle, and forget about wide open because the head just kan't utilize that much flow IMHO.

FYI the bike I'm working with is a stock engine, 1980 KZ1000 LTD, fitted with stock sprockets and slightly larger (fatter) tires. Aftermarket / modifications are a 4-1 Kerker exhaust (w/mid sized muff), Dynatec ignition, and importantly - I took out the stock air box opting for open type air cleaners over 40mm long velocity stacks. I also made a panel to cover the big open space under the seat - mostly to eliminate turbulence since I knew at higher speeds, air pressure would peel the side covers off. But in blocking that space, the air pressure signal across all 4 carbs became fairly consistent.

Ok, about 3 years ago I was really fussing with stock Mikuni 26mm carbs. Kinda fed up, I talked with two racer friends, and from their input, I installed slightly-smaller 34mm flatslides. Initial out-of-da-box operation proved the carbs are really rich, so changed pilot to 12.5's and left mains for now.
This combo has proven to be very impressive; really great throttle response, smooth transition across all throttle positions, and plenty of juice at WOT. Surprisingly the bike has good gas mileage when cruising. Had to my ah-ha! moments here.. ;-)
-Steve.
1980 KZ1000 LTD
1980 KZ1000 LTD
September 25, 2020
Seattle, WA
Ride:
1980 KZ1000 LTD