Yamaha TT XT350 and 250 Mikuni TM34 Flatslide Single Carb Conversion Kit

  

Although the TM34 is a cost-effective carburetor option, it offers significant performance enhancements compared to OEM and Mikuni VM carburetors, particularly in situations where space constraints prevent the use of a pumper carburetor. This kit serves as a straightforward solution for non-repairable, worn-out stock units. For many years, it has been the preferred economical performance carburetor for Honda XR riders who have either exhausted their OEM carburetors or wish to overcome some of their inherent issues. It is common to find racers and enthusiasts praising this kit on various owner forums.

We have images available for identification of the two frame types for which we currently build kits. Typically, the TT350 is represented by the white frame (also shown in blue but referred to as WHITE), while the red frame (also depicted, usually in blue and black, and occasionally in silver) is identified as the RED XT350, with confirmed compatibility for the 250 models featuring this air-box.

There is also a purple frame and potentially others; however, to avoid confusion, we will refer to the two recognized frame designs as either RED or WHITE. The kit includes a Mikuni TM34-2 carburetor, a composite two into one manifold complete with gaskets and larger outer diameter washers for use with your OEM mounting hardware, a heavy-duty rubber engine mounting flange secured with stainless steel clamps, an anodized 50mm diameter air-box adapter attached to the carburetor for use with a (not included) foam POD or an optional OEM air box blank adapter with connection pipe and clamps, a 1/4 turn quick action throttle, and a nylon-lined cable featuring a 90-degree lower fitting that screws directly into the top of the carburetor for optimal clearance.

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