Yamaha Kick Start TT XT600 Mikuni TM42 Flatslide Pumper Single Carb Conversion Kit

(1 customer review)

$995.00 AUD

SKU: TM42YAMTT600-KIT Categories: ,


This Mikuni TM42 Flatslide Pumper single carburetor conversion kit is for fitment to early kick-start Yamaha TT and XT600 models using the pictured red frame or similar Teneree frame. Please confirm you have one of the three same suitable frames and air-box as pictured, both air box rubber pipes on the red frame models are of equal size with some ribbed and some smooth. The pictured white Belgarda frame electric start frame will accept this carb also but quite tricky to wriggle into place and attach the air box adapter and rubber flange to the carb once set back into the frame. A small amount of material, using a file, has to be removed from the down tube to allow the carb to stand upright. This bike as does the pictured blue frame, both have a larger diameter air box rubber connection pipe on the RH side, where select the appropriate forked adapter option. The same looking blue framed kick start model is slightly different in the location of the plate behind carb plate which requires modification for fitment. This may also apply to the red Teneree frame (slightly different in appearance to the XT600Z pictured), where in house we fitted this kit with clearance to later have a customer having to remove a little material as too tight.

There is a video on manifold and another on carb fitting on our Mikunioz YouTube channel.

Some models have 6mm fuel lines where you will need to purchase elsewhere an 8 to 6mm reducing hose tail or better still an inline fuel filter with the mixed sizes. Fuel line is not provided.

These kits are available in both this the high performance option or the budget priced TM38. The TM40 pumper will not fit with these frames due to a lack of available space. The other Belgarda 600 has a different frame with lower mounted shock and separate kit (we also build) which is available in TM38, TM40 pumper and with that bike, the TM42 with a small frame modification required.

The TM42 Pumper has proven itself to be a spectacular upgrade on all brands in the 600cc and larger big thumper market.   These Mikuni carburetors like the TM38 will adapt to your stock air-box when using our supplied, forked air-box adapter.

The kit comes with a Mikuni TM42-6 carb, cast two into one manifold with mounting hardware, heavy duty rubber engine mounting flange to isolate the heat, a forked air-box adapter with a carb end hose clamp (requiring the shortening of your OEM rubbers for connection), a 1/4 turn quick action throttle and a nylon lined push/pull cable set. A 310mm long  choke cable with universal mounting bracket. There are spare jets provided for fine tuning.

Climate, altitude and fuel density from different octane fuels all have varying effects on final fine tuning as does cam, exhaust and cylinder head porting etc. For this reason, we have included what we have found to be a range of jets to allow you to tune to most variables worldwide.

You will instantly experience exceptional throttle response, acceleration and performance.


If wishing to modify or use your existing cables or mounting flange to suit the Mikuni TM42  you can purchase the carburetor, tuner jet kit and or what ever other components you want individually by following the directions below.

On the main menu to the left of the page, hover over the carb listing for TM Flatslide Pumper Carbs and then select TM42 carb from the drop down list. When clicking on any individual size Mikuni carb from the drop down list it will put you into a page showing not only the Mikuni carb itself but also any items relevant to that carb, being Mikuni jets, Mikuni flanges, Mikuni carb tuner kits, Mikuni cables , Mikuni throttles, Mikuni air-cleaners and a range of Mikuni carb to OEM air box adaptors etc to also suit. This also makes alternate jet selection easy for you if you have your own spec as only the type jets for that particular carb are shown.
Click on the carb itself if wanting to view the full details and or to make your purchase. Then back arrow back in the carbs main page and go into the tuner kits, which show in the sales drop down list the jetting kits we have for confirmed suitable engines for that particular carb. Again thoroughly read the tuner kit description.
If you’re comfortable with making a purchase of the carb, tuner kit any or other associated components, order it on line or otherwise please call us to further discuss your needs on 0747712677.

All international buyers are responsible for the payment of their domestic customs duties and taxes charged on imported goods. The duty free threshold and duty/taxes payable rates differ from one country to another and we strongly advise you check your liability before ordering if unsure. Please check your tracking on all international shipments within 7 days to follow their progress and determine if it is being held by your local customs dept. or on their behalf by the Postal Service, who you will need to make contact with using the provided tracking number.

Please Note: Other than exact replacement OEM carburetors, all Mikuni Aftermarket Carburetors and Tuning Components are sold “As Is” for Off Road / Racing Use Only and are not intended or approved for use on vehicles operated on Public Roads or in locations where applicable engine tampering and anti-pollution laws apply.

Additional information

Select your forked adapter

Y with matching inlets, Y with larger RH inlet

1 review for Yamaha Kick Start TT XT600 Mikuni TM42 Flatslide Pumper Single Carb Conversion Kit

  1. Nicki Twang (verified owner)

    Top performance for my yamaha xt600 with pod filter👌 + great service and support

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