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Replacement RD250/350/400 Carburetors - Mikuni VM Round Slide Series 28mm Carburetors (pair). Original carburetors for the RD250/350/400 are no longer available from Yamaha. However, Mikuni does offer new VM28 round slide carburetors that are very similar in function and appearance to the original RD carbs. They do require re-jetting, a new throttle cable and optional oil injection. We include a 2 line cable for bikes that use premix or a 3 line cable if you choose the oil injection option. The oil injection option includes new oil nozzles. These carbs are only available with left hand idle screw and have individual choke levers (no choke crossover between carbs). We can jet the carbs for a stock RD250, RD350 or RD400 or for your specific application if you have pipes and other modifications that require jetting changes. Please submit a note with your order upon checkout for jetting changes required, if additional information is required we will contact you. Carb sets are built to order, please allow 5-10 days for shipping. You should let us know the year/model of your RD and any modifications, pipes, air filter, porting, etc. Note: The oil injection option is not required for the R5/DS7.ย -
Mikuni 24mm TM Flat Slide Carburetor. Square type slide carburetors have increased air flow metering at low engine speeds and the smooth bore design reduces turbulence in the carburetor throat for better response and power delivery throughout the rev range. TM Series bodies are designed to accept Power Jet Kits, which prevent leaning out in 2 strokes during extended full throttle running. Provisions to include Power Jet on 38mm, but power jet can be added to any size flat slide 30mm and above with some modification. Click on picture for larger pictures and jetting specs. -
Mikuni 28mm TM Flat Slide Carburetor. Square type slide carburetors have increased air flow metering at low engine speeds and the smooth bore design reduces turbulence in the carburetor throat for better response and power delivery throughout the rev range. TM Series bodies are designed to accept Power Jet Kits, which prevent leaning out in 2 strokes during extended full throttle running. Provisions to include Power Jet on 38mm, but power jet can be added to any size flat slide 30mm and above with some modification. Click on picture for larger pictures and jetting specs.
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Mikuni 34mm TM Flat Slide Carburetor. Square type slide carburetors have increased air flow metering at low engine speeds and the smooth bore design reduces turbulence in the carburetor throat for better response and power delivery throughout the rev range. TM Series bodies are designed to accept Power Jet Kits, which prevent leaning out in 2 strokes during extended full throttle running. Provisions to include Power Jet on 38mm, but power jet can be added to any size flat slide 30mm and above with some modification. Click on picture for larger pictures and jetting specs.
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Mikuni 36mm TM Flat Slide Carburetor. Square type slide carburetors have increased air flow metering at low engine speeds and the smooth bore design reduces turbulence in the carburetor throat for better response and power delivery throughout the rev range. TM Series bodies are designed to accept Power Jet Kits, which prevent leaning out in 2 strokes during extended full throttle running. Provisions to include Power Jet on 38mm, but power jet can be added to any size flat slide 30mm and above with some modification. Click on picture for larger pictures and jetting specs.
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Mikuni 38mm TM Flat Slide Carburetor. Square type slide carburetors have increased air flow metering at low engine speeds and the smooth bore design reduces turbulence in the carburetor throat for better response and power delivery throughout the rev range. TM Series bodies are designed to accept Power Jet Kits, which prevent leaning out in 2 strokes during extended full throttle running. Provisions to include Power Jet on 38mm, but power jet can be added to any size flat slide 30mm and above with some modification. Click on picture for larger pictures and jetting specs.
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Mikuni VM Round Slide Series 28mm Carburetor. These are the most popular high performance single carburetors in the sport of motorcycling. Mikuni's VM Series round slide single carburetors have proven themselves as the performance standard for use in any single cylinder motorcycle and ATV applications for motocross, enduro and trail riding, to flat track racing and road racing on both 2-stroke and 4-stroke engines. Performance features for the VM Series Carburetors include a large selection of bore sizes for increased fuel mixture flow to match engine modifications. And the VM Series offers a wide range of tuning components to allow precise fuel mixture metering in any application, at any throttle setting, under any riding conditions. Click on picture for larger picture and jetting specs. Note: This carb is the way it comes from Mikuni, not jetted for RD's, no oil injection, mikuni makes these for single cylinder dirt bikes and is the left hand version of the carbs. If you need bolt on carbs for your rd see here VM28 Carburetors for the RD's -
Mikuni VM Round Slide Series 30mm Carburetor. These are the most popular high performance single carburetors in the sport of motorcycling. Mikuni's VM Series round slide single carburetors have proven themselves as the performance standard for use in any single cylinder motorcycle and ATV applications for motocross, enduro and trail riding, to flat track racing and road racing on both 2-stroke and 4-stroke engines. Performance features for the VM Series Carburetors include a large selection of bore sizes for increased fuel mixture flow to match engine modifications. And the VM Series offers a wide range of tuning components to allow precise fuel mixture metering in any application, at any throttle setting, under any riding conditions. Click on picture for larger picture and jetting specs.
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Mikuni VM Round Slide Series 34mm Carburetor. These are the most popular high performance single carburetors in the sport of motorcycling. Mikuni's VM Series round slide single carburetors have proven themselves as the performance standard for use in any single cylinder motorcycle and ATV applications for motocross, enduro and trail riding, to flat track racing and road racing on both 2-stroke and 4-stroke engines. Performance features for the VM Series Carburetors include a large selection of bore sizes for increased fuel mixture flow to match engine modifications. And the VM Series offers a wide range of tuning components to allow precise fuel mixture metering in any application, at any throttle setting, under any riding conditions. Click on picture for larger picture and jetting specs.
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Mikuni VM Round Slide Series 36mm Carburetor. These are the most popular high performance single carburetors in the sport of motorcycling. Mikuni's VM Series round slide single carburetors have proven themselves as the performance standard for use in any single cylinder motorcycle and ATV applications for motocross, enduro and trail riding, to flat track racing and road racing on both 2-stroke and 4-stroke engines. Performance features for the VM Series Carburetors include a large selection of bore sizes for increased fuel mixture flow to match engine modifications. And the VM Series offers a wide range of tuning components to allow precise fuel mixture metering in any application, at any throttle setting, under any riding conditions. Click on picture for larger picture and jetting specs.
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Mikuni VM Round Slide Series 38mm Carburetor. These are the most popular high performance single carburetors in the sport of motorcycling. Mikuni's VM Series round slide single carburetors have proven themselves as the performance standard for use in any single cylinder motorcycle and ATV applications for motocross, enduro and trail riding, to flat track racing and road racing on both 2-stroke and 4-stroke engines. Performance features for the VM Series Carburetors include a large selection of bore sizes for increased fuel mixture flow to match engine modifications. And the VM Series offers a wide range of tuning components to allow precise fuel mixture metering in any application, at any throttle setting, under any riding conditions. Click on picture for larger picture and jetting specs.
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Mikuni VM Round Slide Series 32mm Carburetor. Right Idle Screw. -
Mikuni VM Round Slide Series 32mm Carburetor. Left Idle Screw. -
Mikuni Power Jet Kit. Prevents leaning out during extended full throttle runs. Enables you to convert your size 30mm-44mm VM/TM carburetor to a Power Jet Carburetor. Comes complete with all parts needed to complete the conversion. Instructions included.
