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Mikuni Carburetor Tuning Manual. Includes complete parts list, functions, maintenance, troubleshooting and parts selection for Mikuni carburetors. -
Genuine Mikuni Jet Needles. Choose needle number and quantity, then click add to cart -
Genunin Mikuni Needle Jet Bleed Type, choose needle number and quanity, then click add to cart -
Genuine Mikuni Needle Jets Primary type, choose needle number and quantity, the click add to cart -
Genuine Mikuni Needle Valve Assembly for R5/DS6/DS7. Includes float needle, seat & washer. Metal tip float needle. -
Genuine Mikuni Needle Valve Assembly for RD250/350/400. Includes float needle, seat & washer. Metal tip float needle.
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Mikuni Vent Tube Anchor Plate - This part attaches to the float bowl screws and holds the vent line. 2 Required per carb. -
Genuine Mikuni Viton Tip Needle Valve Assembly for RD250/350/400/R5/DS7 & all VM(24-30mm) Carb. Includes Viton tip float needle, float valve seat, does not include washer, available separately. Sold each. -
Mikuni VM - Air Jet (tap and die) - Convert your pressed in VM air jet to removable type. This kit is also good for chasing/repairing pilot jet thread. -
Genuine Mikuni Pilot Jets for VM, TM & TMX carbs. Sold each. Choose jet size than quantity, then click add to cart -
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. -
Manifolds for 30-34mm Carbs(VM, TM, PWK, PJ) with Boost/Crossover holes. By Moose Racing, high quality material resistant to cracking or ripping, outperforms stock manifolds. Specifically formulated to resist harsh fuels (including methanol) and oils. Carb side opening i.d. accomodates 40mm carb spigot. Includes manifold gaskets & clamps. (recommended for use with larger 34mm carbs on RD350/400 or RZ350 applications). Perfect for use with boost bottle. -
For use when tuning a motorcycle with the gas tank removed. Includes 4Í of 1/4î fuel line and an in-line fuel petcock. Holds up to 2,000cc or 1/2 gallon of fluid. -
Genuine Mikuni Float Needle Valve Seat Washer for RD250/350/400/R5/DS7 & all VM(24-30mm) Carbs. Sold each. -
Oil Injection Line Clip, 90468-02033-00 OEM Originals $6.99 each or Reproduction Clips - $1.95 each -
Fuel Rated Plastic T-Splitter 1/4"- Use to route or repair fuel lines, oil lines and air lines
- Barbed ends provide a secure fit
- Made in the Germany
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Kit contains all the carb parts you need to perform the popular RD350 / RD400 carb mod. This modification is referred to as the Dave F carb mod and is used for bike with expansion chambers and performance air filter. Kit includes: 169PO Needle Jets x 2, 5DP7 Needles x 2, Main jets 180-220 x2, Pilot jets 27.5,30 x2, (1)5/64 Drill bit. Main jets/pilot jets included are the approximate range, your specific application may vary depending on engine modifications, intake, porting, etc. If you are unsure of correct jetting, seek tuning advice. You can download instructions for this modification at the below link. Instructions -
Quad Flow Torque Wings for RD's and RZ's (stock carbs) The Quad-Flow Torque Wing has horizontal and vertical air flow stabilizers which increase air flow, air speed and fuel atomization, thereby increasing performance. Install for maximum performance, then HANG ON! Note: This kit is for twin cylinder engines and includes 2 torque wings Increased power across the RPM range, awesome throttle response. Easy installation, no tuning required. Stainless steel construction, no moving parts. -
Quick Disconnect Fuel Coupling with dual shutoff in 1/4" or 5/16". When connected fuel will flow & when disconnected fuel will not flow from either side. Use Dual shut-off for fuel tanks equipped with a cross-over line. Capable of withstanding temperatures of -40 degrees F to 180 degrees F. These quick disconnect fittings utilize Nitrile (Buna N) o-rings and may not be compatible with some race fuels. Made in the U.S.A. Choose size and click add to cart. We recommend keeping as little slack as possible in the crossover line to keep the coupler up and away from the heat of the engine. -
Brand new fresh rubber carburetor boots for Yamaha RD350 and R5. Boots protect the carbs and cables from dust, dirt and moisture. These boots go on top of the carbs where the cable enters the slide. These are not the boots that connect the carbs to the air filter box. These are suitable for any round slide carb for street and dirt motorcycles. Sold in pairs. -
RD250/350/400 Carburetor -
RD250/350/400 Carburetor Clamp (carb to manifold). This is a high quality alternative to the expensive Yamaha part (17.50), secures carb to manifold. Sold each. Note: The finish on these is yellow/brass, very different from the original olive drab color clamps but they perform just fine at much less cost. The original Yamaha part number was 90460-43053-00, superceded to 90460-43179-00. -
RD250/350/400 Carburetor Clamp (carb to manifold). OEM Yamaha parts, secures carb to manifold. Sold each. The original Yamaha part number was 90460-43053-00, superceded to 90460-43179-00. -
Carburetor Boot Clamp. Sold each. Note: The finish on these is yellow/brass, very different from the original olive drab color clamps but they perform just fine at much less cost. Fitment as follows: R5 - Carb to carb boot (2 required per bike) RD250/350 - Carb to Y-boot (2 required per bike) RD400 - Carb to carb boot / Carb boot to air box (4 required per bike) (all years of RD400 including 1979F Daytona) -
Black Allen Manifold Bolt Kit. 8 High quality black Allen (socket head) bolts. Also available in stainless. Available in standard length or long for manifolds with reed block spacer. Standard length pictured. Click add to cart to choose size. -
Stainless Allen Manifold Bolt Kit. 8 High quality stainless Allen (socket head) bolts. Also available in black. Available in standard length or long for manifolds with reed block spacer. Standard length pictured. Click add to cart to choose size. -
RD350 Y-Boot Intake - Genuine Yamaha Part. Also Referred to as JOINT, AIR CLNR, part no 360-14453-00-00 -
RD350 Y-Boot Intake, Also Referred to as JOINT, AIR CLNR, Yamaha part no 360-14453-00-00, this is a reproduction part. -
RD350/250/R5/DS7 Carburetor Float, sold each (2 per carb). Genuine Mikuni Part -
RD400 (all years) Carburetor Float, sold each. Genuine Mikuni Part. -
Yamaha RD400 (all) Original Yamaha OEM Petcock. (note: Yamaha now supplies these petcocks with a plastic bowl, originally they were metal. You can use your old metal bowl with the new petcock). 4L0-24500-00-00 -
Yamaha RD400 LC350 Petcock All Years. Reproduction part. Similar to original Yamaha petcock and has on/off/reserve and 2 outputs. Replaces Yamaha part no. 4L0-24500-00-00 -
RD400/LC350 Replacement Fuel Petcock Kit (Fuel Valve/Tap) by Pingl. Includes high quality / high flow dual outlet Pingle petcock with on/off and reserve positions. Includes correct adapter plate for the RD400 (34mm bolt spacing), gasket and hardware for mounting on Yamaha RD400 and LC350 (all years). -
Sale!
Standard 1/4" Fuel Line - Bulk 25 Feet. Black Rubber. 6.4mm ID, 11mm OD. Not for use with fuel containing 10% Ethanol or more. -
TDR Hyper Tension Reeds - Yamaha RD250/350/400. By Tony Doukas Racing. The tuner and racer's choice in reed technology. Custom design by TDR to give maximum performance, flow and long life, excellent high rev performance. Highest quality fiber reeds available, each kit contains 2 sets of reeds, enough reeds to do 2 carbs/1bike. Note: One package of reeds is enough to do one bike, two cylinders. Available in 3 stages: Stage 1 (yz125 style) - Stock to mildly modified engines. These double petal reeds are .018" thick and offer excellent throttle response and added performance. These reeds are based on the Yamaha YZ125 reeds but resized to fit the RD reed cages, no cutting or mods required. Stage 2 - Stock or slightly modified engines (chambers/filters/no porting). These double petal reeds are .020" thick and offer excellent throttle response and added performance. Slightly stiffer than our stage 1 reeds. Stage 3 - For highly modified engines or racing applications. These Single petal reeds are .020" thick and offer excellent throttle response and added performance. Much stiffer than our stage 1 or 2 reeds. -
The UFO Ultimate Flow Optimizer is a simple, trouble free, aerodynamic piece for stock RZ350/Banshee carbs. The UFO makes a normal round slide carburetor out-perform the more expensive flat slide carburetor by eliminating turbulence and increasing air flow and velocity, creating a highly atomized fuel charge. Normal gains are 3/4 to 1 HP per 100 cc of engine displacement on 4 stroke engines and 1 1/2 to 2 HP per 100cc of engine displacement on 2 stroke engines. (Minimal re-jetting (pilot jet) and tuning are required). Note: This UFO kit is for twin cylinder engines and includes 2 UFO's. -
Ultra Sonic Carburetor Cleaning - Ultra Sonic cleaning is the most effective way to have your carbs cleaned. The carb bodies are immersed in a non-corrosive heated solution and treated with 40KHz sound pressure waves that clean 100% of all inner and outer surfaces and carb passages. This cleaning far exceeds normal carb cleaning with carb cleaner and wires which simply can't remove all the debris and residue as effectively an Ultra Sonic washer can becuase it cleans 100% of all surfaces. An ultrasonic cleaner works by the energy released from the collapse of millions of microscopic cavitations near the dirty surface. The bubbles made by cavitation collapse forming tiny jets directed at the surface removing varnish, debris, rust and other pollutants. Ultra sonic cleaning is also used for cleaning optic lenses, jewlery, watches, dental/surgical instruments, diving regulators and industrial parts, etc. Note: This price is for the cleaning itself and does not include labor for dis-assembly and rebuilding the carbs. Simply send us your carbs stripped down to the body or send us the carbs right off the bike and we will strip and rebuild them for you. If you choose to send in the entire carbs right off the bike, we will contact you after we receive the carbs with a complete estimate. Prices for dis-assembly and rebuild vary by carb type and the condition of the carbs. For example, a complete dis-assembly and ultrasonic cleaning of RD350/400 carbs x2 (non-Daytona) typically runs $75 per carb + parts. Price does not include return shipping. If you have any questions about this service or costs please feel free to contact us at 224-430-7971.
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Vintage Style Fuel Line Clamps - 3/8" Fuel line clamps for 1/4" fuel line. Clamps are zinc plated and self-compensating, nearly identical to the original Yamaha clamps used on the RD's and many other bikes of the period. Sold each, Quantity = number of clamps desired. Compare to Yamaha OEM at $7.99/each. Replaces Yamaha part no. 90467-08003-00 -
VM26-28 Carb Top Gaskets Sold Each. Suitable for RD250/350/400 & others with VM26 or VM28 carburetors. Genuine Yamaha Part. -
Yamaha Banshee Cross Over Tube for use with RZ manifolds. No bend in pipe, not for stock RZ350 carbs. OEM Yamaha part. -
Yamaha CS5 - Carb to Airbox Intake Boots - Pair 337-14453-00-00 reproduction (sold in pairs) -
Manifold / Reed Valve Gasket - for RD250/350/400. Reproduction gasket. Sold each. Note: Sample picture, actual gaskets may vary in color depending on supply. -
Manifold / Reed Valve Gasket - for RD250/350/400. Genuine Yamaha OEM. Sold each. Note: Sample picture, actual gaskets may vary in color depending on supply. Genuine Yamaha gasket.
Call Us Today! 1 (224) 430-7971|customerservice@economycycle.com
