Honda CBX Randakk Master Carb Overhaul Kit®

World’s Best CBX Kit!

100-1214 cbx master carb kit 03 cover


Randakk’s considers the CBX carbs to be “works of industrial art”…truly amazing carbs! Simply stunning examples of very intricate die casting! Here’s another exclusive kit designed to help you put your CBX carbs in top working order.


This kit is proprietary to Randakks…you won’t find this available anywhere else at any price. 


Unlike ordinary aftermarket kits, each Randakk kit provides everything listed for all 6 carbs plus other items required for splitting and rejoining the carbs to replace the cross carb fuel transfer tubes as well as the float bowl vent circuits. Randakk’s even includes rebuild kits for the air cut-off valve and accelerator valve.

Only the highest quality items are included. This kit has been thoroughly tested. This collection represents the best value available in the market. Trust us, you’ll need everything in this kit to do a proper overhaul of your carbs.



CBX Model Identification


  • All 1979 – 1982 CBX with original carbs will require our 100-1214 kit.



Kit Components

100-1214 cbx master carb kit contents


Viton O-rings:


6x  fuel (idle) mixture screw (2.8 x 1.1 mm)

6x  float bowl drain screw (4.3 x 1.3 mm)

6x  CV Slide Top Limit Plug (6.9 x 1.3 mm)

1x  Accelerator pump passage at float bowl (5.0 x 1.3 mm).

12x  Main Fuel Transfer Tubes (5.8 x 2.0 mm)

12x  Accelerator Fuel Transfer Tubes (3.8 x 2.0 mm)

12x  Air Cut-off Circuit Tube Connectors (7.8 x 2.0 mm)

6x  Float Bowl Gaskets – (constructed of superior Viton material to resist the components of modern gasoline.)


Miscellaneous Parts:


1x  Air Cutoff Valve Overhaul Kit

1x  Accelerator Pump Overhaul Kit

6x  idle mixture screw washers

18x  float bowl screws (4 x 16 mm)

1x  1mm cotter pin for accelerator pump linkage – (simple item, but hard to find elsewhere)

6x  rubber blanking plugs (Viton) – (cover access to idle fuel jet for ’79 carbs only but supplied in all kits)

12x  high quality, plated M3 x 6mm (0.5 pitch) panhead screws for securing butterflies (necessary for complete disassembly / reassembly)


Parts Total: 106 total pieces



All O-rings Are Not The Same!


The round o-rings in each Master Kit are made of Viton rather than ordinary nitrile (Buna-N) as found in other aftermarket carb kits. One good case of severe engine overheating can ruin the carb o-rings found in ordinary kits? Randakk’s o-rings are the best available!


Viton is superior to nitrile in terms of:

  • Heat tolerance (400 degrees F vs. 250 degrees F)
  • Compression set
  • Permeation

We even include rebuild kits for the air cut-off valve and accelerator valve as required for each application.

cx500 accelerator pumpcx500 air cut off valve






You will need access to good reference material for a successful rebuild, such as the official Honda Factory Workshop Manual.

There is some critical information there on rejoining and aligning the carb bodies to prevent binding of the throttle and choke shafts…very important!






“… Wanted to say how very happy I am with the CBX carb overhaul kit I recently purchased from you. Your delivery was very prompt – within 2 days from the USA to Australia is pretty good!! – and all components of the kit were present, of excellent quality, very well packaged, and in very sensible package “groupings” so as to allow this CBX carb ‘newbie’ to ultimately make sense of it all.

Due to this being an “educational project” for me and having to diagnose and fix many niggling problems due to my own inexperience, I had to join the pairs and rack of carbs I would say at least 10-15 times. I believe the fact that the carb rack successfully went apart and together so many times with absolutely no hint of a leak from the rack on the final on-bench leak test speaks volumes for the quality and durability of your product. Excellent product and you can count me in as one very satisfied customer. Keep up the good work. Kind Regards.”

randakk tonyherd large

Tony Herd (right) with friend Con – New South Wales, Australia



Beautifully Restored CBX Carbs by Leon Summers of Los Gatos, CA (using parts from Randakk’s)




Quick Notes


No jets or jet needles are supplied with our kits. These can normally be cleaned and reused.

No float valve/seat assemblies in our kit

The choke butterflies must be removed during the disassembly of CBX carbs to renew the side-to-side transfer o-rings. The staked OEM choke butterfly screws are very difficult to re-use. You will need to use some medium-strength Loctite to secure the screws.

cbx luvcarbs panhead screws

The kit includes 12 high-quality panhead screws for securing choke butterflies (pictured above).


Considerable skill is required to install this high-quality kit correctly. Since Randakk’s cannot control this important variable, there is no warranty on these. Rest assured that they are of the highest quality materials and workmanship. Each kit has been carefully packed and inspected to ensure that all items are included.

Not sure can handle your own rebuild? Then, check out Randakk’s Approved Carb Rebuilder Program.

To read more reviews on this and other products visit our Review Site,


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