1. Honda XR600/650L Mikuni TM40-6 Flatslide Pumper Carb Basic KIT

(3 customer reviews)

$510.00 AUD

or 4 fortnightly payments of $127.50 AUD with Afterpay More info

Modification of your OEM cables is required with this basic kit. Our complete kit includes cables.

SKU: XR600/40BKIT Categories: ,


Going fast has never been so easy, say goodbye to hard starting, hesitations and flatspots.  These Mikuni carburetors are correctly sized and easily fitted to your Honda XR600 and XR650L air box and intake manifold flange using the  silver anodized engine inlet and outlet spigot adapters, both adapters are fitted prior to delivery when purchasing complete kits. This  kit is intended for fitment using your stock throttle cables which may require shortening of the inner wire on some models and does not come with our throttle cables and a 1/4 turn quick action throttle assembly. There are jets provided that must be changed as well as two spare mains for fine tuning at WOT. 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. In this kit we have included what we have found to be the most commonly used combination of jets to allow you to tune for most variables. The TM40-6 comes with a 6″ cable choke for which a mounting bracket is included and a knob choke is also included.

You will instantly experience better throttle response, improved acceleration, increased horsepower and torque.  In a number of instances Dyno tests have shown improvements of up to and over 25%  when fitted to OEM carburetored engines.

This kit universally fits all XR’s and we have thousands of happy customers using it but there is a range of different carbs fitted to the XR series Honda’s where this carb has a 60mm OD inlet and a 47mm OD outlet, the XR650R (for which we sell a separate kit) has a 64mm inlet and 49mm outlet and there are some other variations in diameters and lengths out there, the NX is almost 20mm shorter than some others. If wanting to refine your fitment, we have sleeves for matching most configurations and do please contact our office before ordering. 0747712677


If wishing to modify or use your existing Susuki DR650 cables to suit the Mikuni TM40-6 or use a POD filter rather than the original air-box 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 Carbs with Accel Pump and then select TM40-6 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.

3 reviews for 1. Honda XR600/650L Mikuni TM40-6 Flatslide Pumper Carb Basic KIT

  1. admin

    Great carb and gave me way more improvement than ever expected, thanks for the great service

  2. Jeff Richardson

    This carby on my xbr500 is stunning. I set up pilot fuel jet, got mid range needle roughly set. I did WOT setting so bike revved strongly without bogging to 7500 then fine tuned mid range with the needle. I have no 1/4 – 3/4 throttle mixture differences and linear power from start to WOT. so smooth. Must have at least 25 percent more power and improved economy and engine temperature. Tom was terrific with his guidance and knowledge since I had a lot to digest. A remarkable outcome and a very quick XBR500

  3. Travis

    Just fitted one of these to my 2007 DR650. Totally changed the bike. It now starts immediately, has way better throttle response and I would estimate a 15 to 20 percent power increase. WOT in top seems similar to the jetted up BST but I haven’t experimented with jetting on the TM yet. Original cables and remote choke were compatible but just had to drill one of the cable holes a bit bigger. Straight out of the box to test ride in about an hour. Easily the best mod I have done.

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