Yamaha Kick Start SRX600 Mikuni TM42 Flatslide Single Carb Conversion Kit.

(1 customer review)

$920.00 AUD

SKU: TM42YAMSRX600-KIT Categories: , ,


This Mikuni TM42 Pumper single carburetor conversion kit is for fitment to early twin shock kick-start Yamaha SRX600 models. Please confirm you have the same box section twin shock frame as pictured and the two same size ports on your cylinder head. These kits are your most impressive performance available but do require an indent to be made into the underside of your gas tank. A competent person with an appropriate hammer can easily depress the contact area to allow carb and throttle mechanism clearance under this tank. The improvement in performance far outweighs any inconvenience of this hidden modification.

These kits are available in both this the budget priced TM38 and high performance TM pumper carb versions.

The TM42 Pumper has proven itself to be a spectacular upgrade on all brands in the 600cc and larger big thumper market.  Due to space restrictions (less than 30mm between the back of the carb and the plastic box) this carb will not adapt to your stock air-box where rather requiring the use of a POD filter of your choice bought elsewhere (carb intake spigot diameter is 65mm). The front face of the OEM air-box can be cut open to accommodate the POD if wanting to retain the box. Wide open throttle runs with both your filter on and off will determine if you have sufficient filter area to supply this carbs demand. This same process also determines the best suited of the supplied main jet options.

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 1/4 turn quick action throttle and a nylon lined push/pull cable set, this requires the bumping of your switch block 10-15mm further up the bars for fitment where the OEM cables wont match and the OEM throttle can not fully open the 42’s throttle valve. 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 XR Model

XR 600, XR 650L, XR 650R, NX 650

1 review for Yamaha Kick Start SRX600 Mikuni TM42 Flatslide Single Carb Conversion Kit.

  1. Bryan Niblett

    I have fully installed this Carb kit and the improvement is amazing. The instructional videos available made installation easy along with the outstanding customer service I received from Mikuni is unheard of these days. I would definitely purchase from them in the future.

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