High Performance Carburetors for Motorcycles

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FCR - Flat-CR Racing Carburetor

The carburetor no one can exceed.

Keihin was asked by the top racing teams to design state of the art carburetors for their factory Super Bike racing machines. The FCR carburetors are the result of that request. Along with the highest level of technology available, the FCRs have proven their advantage with race wins around the world.

FCR FCR Scheme

 

Features of the FCR Carburetor:

  • Smooth bore for maximum air flow.
  • Flat slide with vacuum release plate for best throttle response and flow control.
  • Rollers on throttle valves and progressive linkage for smooth operation and control.
  • Equipped with accelerator pump for rapid acceleration without flat spots.
  • Designed for easy installations on popular motorcycles.
  • Easy jetting which can be done at track side.
  • TPS available with some models

Revolutionary Throttle System

Four rollers are installed on each throttle valve and two on each linkage to ensure smooth movement. Unique "Floating Valve" design throttle valve. Without this revolutionary floating valve design, a roller-type throttle slide cannot maintain a positive seal with the carburetor body, which must be maintained to provide accurate fuel metering.

FCR Air Cleaner Adaptors

Keihin recommends the use of air cleaners along with these adaptors for the FCR carburetors.

Download the Technical Info (PDF)

 

MODEL PARTS NUMBER SIZE
K&N KALA-00019 35-41MM
  KALA-00020 32-33MM
SCREAMIN' EAGLE KALA-00037 41MM
STOCK GSXR750 '96 MODEL KALA-00038 39-41MM
STOCK ZX6R, ZX9R, ZX11D KALA-00039 35-41MM

FCR Application Charts

Honda

Model Venturi Type
CB - 1 (400) 32 MM D
CBR600 32 MM D
CBR600 33 MM D
CBR600F2 32 MM D
CBR600F2 33 MM D
CBR600F2 35 MM D
CBR600F3 35 MM D
CBR900RR 39 MM D
CBR900RR 41 MM D
CBR1100XX 41 MM D
CB1000 39 MM H
CB1000 41 MM H
CB1100F 39 MM H
*CB1100 BIGI 39 MM H
*CB1100 BIGI 41 MM H
NT650 39 MM D
NT650 41 MM D

Suzuki

Model Venturi Type
GSXR750 39 MM H, D
GSXR750 41 MM H, D
GSXR1100 39 MM H
GSXR1100 41 MM H
GSXR600 35 MM H, D
GSXR600 37 MM H, D
*GS 39 MM H
GSX SERIES 41 MM H
RF600 35 MM D
RF900 39 MM D

Kawasaki

Model Venturi Type
ZX-6 33 MM D
ZX-6 35 MM D
ZX-6R 35 MM D
ZX-7 35 MM D
ZX-7R 39 MM D
ZX-9R 41 MM D
ZX-10 37 MM D
ZX-10 39 MM D
ZX-10 41 MM D
ZX-11 37 MM D
ZX-11 39 MM D
ZX-11 41 MM D
*ZEPHYR 750 35 MM H
*ZEPHYR 1100 39 MM H
*ZEPHYR 1100 41 MM H
ZX-900 39 MM H
ZX-900 41 MM H
ZX-1100 39 MM H
ZX-1100 41 MM H
*KZ SERIES 39 MM H
*KZ SERIES 41 MM H

Triumph

Model Venturi Type
ALL TRIPLE 39 MM H

Harley-Davidson

Model Venturi Type
HD 41 MM H

Yamaha

Model Venturi Type
FZR400 32 MM D
FZR600 32 MM D
YZR600 33 MM D
YZR600 35 MM D
FZR750 37 MM D
FZR750R 39 MM D
YZF750 39 MM D
FZR1100 YZF1100 37 MM D
FZR1100 YZF1100 39 MM D
FZR1100 YZF1100 41 MM D
SRX-4 35 MM H
SRX-4 39 MM H
R1 41 MM D

BMW

Model Venturi Type
K-100 32 MM D
R-100R 37 MM H
R-100R 39 MM H
R-100R 41 MM H
F-650 39 MM H

Ducati

Model Venturi Type
*750 SUPER SPORT 39 MM D
*750 SUPER SPORT 41 MM D
*900 SUPER SPORT 39 MM D
*900 SUPER SPORT 41 MM D

NOTE: In type column D=Downdraft H=Horizontal Other Applications may be available Ask your Keihin Dealers *Check for availability