✳ Keihin Cr Special Racing Carburetors • 29mm Cr29 • Honda Cb750 1969-1976 ✳ on 2040-parts.com
San Francisco, California, US
Keihin CR Special Roundslide Racing Carburetors
29mm CR29 - Honda CB750 - 1969-1978
Keihin Roundslide CR Sidedraft Racing Carburetors. 29mm CR29. For use with the Honda SOHC CB750s from 1969-1976.
The choice of Team Honda for years on all there in-line 4-cylinder race bikes in Superbike, World Championship Endurance and Formula One classes. You’ll find the power you need with these Keihin Roundslide CR carburetors. Designed for use on sidedraft four-stroke motorcycle engines.
Features include: Improved throttle response; direct linkage to slides provides more precise control than vacuum slide carburetors. A 10% horsepower gain can be expected; Smooth venturi design produces stronger power than original equipment carburetors using butterfly throttle valves. Race fuel capability. Available for gasoline or alcohol use. Rejetting required when using alcohol or methanol, kit available as an option. Ready to bolt-on and run, these kits come complete with mounting spigots, velocity stacks and velocity stack covers. Also comes with a user's manual with tuning guide and list of available replacement and tuning parts. Intake length can be adjusted with optional mounting adapter spigots.
These carburetors feature superb response from idle to full throttle while making more horsepower with easier adjustability than any other carburetor.
- A third less weight than stock carburetors
- Adjustable throttle positions (60° - 90°)
- Main and Air Jets accessible without removing carburetors
- Needle changes possible in less than 2 minuets
- Choke and full-idle circuits
- Wide range of jets and tuning parts available
Most replacement and tuning parts are also available. Contact us at service@4into1.com for special orders.
These carburetors are only legal in California for racing. Not for Highway use.
For use with Honda:
Carburetor Jetting:
These 29mm carbs are designed for use with the Honda CB750 SOHC bikes from the 70's. There's the option of choosing the CR29 or the CR31 carbs. You can read about that by following the link below. Also be aware that these carbs are going to take some work and tuning for your bike to run properly. You should know what you doing already or be ready to learn. You can't simply throw these on the bike and expect it to work right. But once you have it all dialed in, with what ever other performance parts you're using, larger bore piston kit, exhaust, ignition . . . it's gonna be a beast of a machine!
Please follow this link and read more about using these carburetors on CB750s. Check it out here at the SOHC 4 Forum - forums.sohc4.net
PLEASE NOTE: We do not offer technical service for these carburetors. If you buy these, you need to know what you're doing or be able to find out for your self.
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