This carb is a must with any major motor work in order to get the engine enough fuel. It is more of a midrange carb and gives the motor great throttle response. It shouldn't be used on a stock motor because it won't do anything on a stock motor. This carb will also require a special throttle cable and will eliminate the TORS system. It does require different jetting curves than the stock carb because the the size but it is highly recommended. This carb is also the stock Honda TRX 250R carburetor. Cost- around $200 |