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Mikuni VM Round Slide Series 32mm Carburetor. Right Idle Screw.
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Mikuni VM Round Slide Series 32mm Carburetor. Left Idle Screw.
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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.
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Mirror - Yamaha RD400 RD250/350LC Replacement Mirror Left hand. Perfect match in fit & finish, just like the original sans the Yamaha Logo. Also available Right hand & sold in pairs
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Mirror - Yamaha RD400 RD250/350LC Replacement Mirror Right hand. Perfect match in fit & finish, just like the original sans the Yamaha Logo. Also available Left hand & sold in pairs
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Mirror Adapters (for use with our Yamaha RD350 reproduction Master Cylinders). Available in black or chrome. This is a mirror stem adapter, 10mm right hand to 10mm left hand. Sold each. Choose color and add to cart.
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Mirrors - Yamaha RD400 RD250/350LC Replacement Mirrors - Pair. Perfect match in fit & finish, just like the original sans the Yamaha Logo. Also available separately RH, LH
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Engine Oil Seal Kit for Yamaha R5/DS7. High quality seal kit, includes all seals for bottom end. By Mocom, high quality aftermarket seals. This kit includes includes 7 seals. (click on the picture for seal identification)
- Countershaft Sprocket Seal
- Crankshaft RH
- Crankshaft LH
- Kickstarter Shaft
- Shift Shaft (crankcase)
- Clutch Push Rod
- Oil Pump Note: Shifter fork shaft plugs (2 required) are not included in this kit but are available separately here on the site in the seals category.
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Engine Oil Seal Kit for Yamaha RD400/350/250. High quality seal kit, includes all seals for bottom end. By Mocom, high quality aftermarket seals. This kit includes includes 8 seals. (click on the picture for seal identification)
- Countershaft Sprocket Seal
- Crankshaft RH
- Crankshaft LH
- Kickstarter Shaft
- Shift Shaft (crankcase)
- Shift Shaft (outer cover)
- Clutch Push Rod
- Oil Pump Note: Shifter fork shaft plugs and the special O-ring crank seal are not included in this kit but are available separately here on the site in the seals category.
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Long-filament fiberglass made especially for 2 stroke muffler packing, suitable for aftermarket expansion chambers, Measures 10.5" x 16", more than enough to repack virtually any 2-stroke silencer. Resists breakdown up to 1200 degrees F. Made in the U.S.A.
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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.
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Sale!Moose Racing Pro MX 520 roller chain in GOLD - Close out. This chain was cut too short but rectified with an additonal master link. So you will have two master links with this chain. Does not affect performance. This is an excellent medium grade chain, pre-stretched, anti-kink design, includes 2 clip style master links. This chain is used on the RD250/350/400/R5 520 Conversion. Made in Spain. This chain is 96L inks, suitable for all years of the RD400, it can be cut to 92L for use with the RD250/350/R5 with the 520 conversion. We can cut this to 92L for you, simply add chain to cart and go to link below and select 92L for chain link modification. Length for reference: R5/RD350/RD250 - 92 Links Chain Length Modification
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Designed to check for air leaks in 2-stroke engines. Includes air pressure gauge, pump-up bulb and most fittings and adapters for single and twin cylinder 2-stroke motorcycle engines. Packed in a convenient carry box, complete with instructions Made in the U.S.A. This tool is available for rent from Economy Cycle $75/$300 deposit. Please call if interested 224-430-7971
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Timing kit for inspection and adjustment of ignition timing; gauge face size 1 1/2". Comes with adapter for air-cooled 2 strokes. Although this is an excellent gauge, we do not recommend it for the RD250/350/400/R5/DS7 as there isn't enough clearance to use the gauge with the engine installed in the frame. For the RD250/350/400/R5/DS7 or any bike with minimal clearance between the frame and spark plug, we recommend the Economy Cycle Dial Gauge made specifically for RD and Yamaha twins, which can be found here Economy Cycle Dial Gauge
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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.
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Jumper cables made specifically for motorcycle and powersports use.
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Motorcycle LED Mulit-function Brake/Running/License Tail light. 34 LED tail lights, 2 LED license plate lights.
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Motorcycle Related Stickers - Variety 100 pack. Huge variety pack of various motorcylcle related brands, Yamaha, AGV, Bell, AMA, Aria, Simpson, K&N & dozens of others. Easy to paste and remove. Made from PVC.
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Wire Covering/Loom/Sheathing in Black PVC - Available in 4mm, 6mm, 9mm, 11mm, 14mm, 19mm. High-Gloss Black PVC Sleeving for handlebar controls or wire harness loom. Soft and flexible. Resistant to sunlight, weather, chemicals, oil, heat, and mold, will last for years and perfect for correct restorations of vintage motorcycles. Sold by the foot. Quantity = number of feet desired. Note: approximately 2-3 18 gauge wires will fit in the 4mm sheathing.
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Wire Covering/Loom/Sheathing in Silver/Gray PVC - Available in 3mm, 6mm, 8mm or 12mm. Silver/Gray PVC Sleeving for handlebar controls or wire harness loom. Soft and flexible. Resistant to sunlight, weather, chemicals, oil, heat, and mold, will last for years and perfect for correct restorations of vintage motorcycles. Sold by the foot. Quantity = number of feet desired. You can fit 2 18 gauge wires in the 3mm Sleeving
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MPPL - Penetrating Lube, Fogger, Starter Fluid. All-purpose penetrating lube also displaces water and provides rust and corrosion protection. Forms a protective film on metal and will not harm plastic or painted surfaces. Excellent fogging oil or starting fluid for 2-cycle or 4-cycle engines. Great for detecting intake air-leaks. 20 oz. cans, 15.5 oz. net weight.
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Genuine Mikuni Float Needle Valve Seat Washer for RD250/350/400/R5/DS7 & all VM(24-30mm) Carbs. Sold each.
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Neutral Switch Wire Grommet. Reproduction part, no longer available from Yamaha. Sold each.
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Need a solution for your original RD Headlight? We have one with a replaceable H4 Halogen Bulb. Click on details below and scroll down to descprition.
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NGK Iridium Spark Plug. The ultimate in the evolution of spark plug technology and performance from the industry leader. The iridium electrode is 25% smaller than a platinum electrode, and it’s just 1/4 the size of a conventional nickel electrode. Ultra-small-diameter center electrode reduces voltage requirement and extends ignition system life. New metal shell plating has enhanced anticorrosion qualities. BR8EIX Stock for RD400, BR8HIX stock for RD350. Choose spark plug, quantity and click add to cart.
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NGK Iridium Spark Plug RZ350. (BR8EIX Stock). The ultimate in the evolution of spark plug technology and performance from the industry leader. The iridium electrode is 25% smaller than a platinum electrode, and it’s just 1/4 the size of a conventional nickel electrode. Ultra-small-diameter center electrode reduces voltage requirement and extends ignition system life. New metal shell plating has enhanced anti-corrosion qualities. Choose heat range, quantity, and click add to cart.
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***NOTE*** Most non-resistor type spark plugs (B8HS, B8ES) have been discontinued by NGK, you can substitute resistor type spark plugs (BR8HS, BR8ES) without issue). The NGK Standard Spark Plug is manufactured to enhance the performance of the vehicle. It is constructed from durable material that is corrosion and abrasion resistant. The Spark plug insulators are made of 99 percent pure alumina silicate, allowing for longer insulator noses for reduced fouling. This Spark plug features a triple gasket sealing process that eliminates fuel leakage. It also includes a solid copper core that provides superior heat dissipation and conductivity. This Spark plug has resistor that is produced with a glass and carbon mixture, which is fired to ensure superior performance and durability. It has corrugated ribs that prevent flash over and cold rolled threads to inhibit damage to the cylinder head. Choose spark plug and click add to cart.
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These O-rings are for RD350/400 heads that have been modified to accept O-rings (by Economy Cycle, SCR (Scott Clough Racing, or new DG heads. Sold each. Sample picture, color may vary. Sold each. Multiple sizes: #40 for modified stock heads #40 for Superior heads #39 for DG Heads
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Octane Boost by Maxima. Concentrated octane booster increases pump gas octane rating. Eliminates pre-detonation. Mix either with straight gas or with alcohol and nitrous mixtures. For 2- or 4-stroke engines. Cleans fuel delivery systems. Legal for all racing applications. Won't harm or discolor plastic gas tanks. Cleans fuel delivery systems. Each ounce of octane booster per gallon of gas raises octane rating by four points. 16 oz. bottle.
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Oil Injection Line Clip, 90468-02033-00 OEM Originals $6.99 each or Reproduction Clips - $1.95 each
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Oil lines grommet. Reproduction part no longer available from Yamaha. This part fits into the top of the engine cover and the oil feed/supply lines pass through it. Sold each.
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Yamaha RD350/400/250/R5/DS7 Oil Pump Grommet Blank. This is a solid plug with no openings for oil lines and is intended to be used on bikes that premix and do not use the oil pump or oil lines.
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Yamaha RZ350 Oil Pump Grommet Blank. This is a solid plug with no openings for oil lines and is intended to be used on bikes that premix and do not use the oil pump or oil lines.
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Yamaha RD350/400/250/R5/DS7 Oil Pump Block Off Plate Kit. Kit includes:
- CNC aluminum block off plate
- Yamaha oil pump gasket
- Replacement engine case grommet block (solid, no openings for oil lines)
- Stainless steel allen bolts and lock washers
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Yamaha RZ350 Oil Pump Block Off Plate Kit. Kit includes:
- CNC aluminum block off plate
- Yamaha oil pump gasket
- Replacement engine case grommet block (solid, no openings for oil lines)
- Stainless steel allen bolts and lock washers
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Oil Pump Check Valve Nozzle - RD250/350/400/R5/DS. This is the nozzle on the pump (not the carb) that delivers 2 stroke oil to the oil line going to the carburetor. This part is fitted with a small spring and ball bearing to complete the check vavle. Each bike/pump has 2 of these.
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Oil Pump Housing Main Gaket - Yamaha RD350 RD400 RD250 R5 DS6/7 RZ350, sold each.
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Oil Pump Rebuild Kit RD250/350/400 R5/LC350/YDS6/7 & Most Yamaha Oil Pumps from the 60's,70's & 80's Comprehensive kit - includes seals, gaskets, and screws. Covers most vintage Yamaha Motorcycle Oil Pumps from the 60's,70's and 80's
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Oil Pump Rebuild Service includes the following:
- Pump completely disassembled & checked for wear
- Pump body and parts ultrasonically cleaned
- Pump body media / vapor blasted if needed
- Replacement of all seals/gaskets and check valve springs
- Reassemble pump and calibrate (shim) to spec
- Approximate turn around time - 2-3 weeks
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Oil Pump Shaft Plug (oil pump block off) - Yamaha RD350 RD400 RD250 R5 DS7 & others with auto lube pump delete/Pre-mix bikes. Use this seal plug instead of a block off kit (plate & gasket). This seal is installed on the inside of the engine cover. Easy to install. Replaces oil pump shaft seal, requires removal of oil pump drive shaft.
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Oil Pump Shaft Thrust Washer (steel) - Yamaha RD350 RD400 RD250 RZ350, sold each. 90201-08624-00
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Yamaha Oil Pump Shims OEM Sold each. - Available in .03mm .05mm .10mm Generic oil pump shims available in stainless .10mm
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Oil Pump Worm Gear Pin and spring set. These are the small springs and pins under the ring gear that often get lost and make the pump inoperable. These pins/springs work with all Yamaha oil pumps with the white priming wheel (and RD400's with or without priming wheel). When used as a set, this pin/spring combination is 1mm shorter than stock which makes them much easier to install and doesn't affect the operation of the pump. Sold as a set of 1 pin and 1 spring.
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Oil Tank Damper - Yamaha RD350 RD400 RD250 R5 DS6/7, sold each. Replaces part Yamaha part no. 437-21779-00-00 Note: One end of this part is capped
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Oil Tank Tube - Yamaha RD350 RD400 RD250 (all years). Reproduction part no longer available from Yamaha, replaces OEM # 360-21753-00. Sold each. *Note: To use this oil tank tube on the R5/DS7 you will need to purchase the matching cap and filler found here Oil Tank Cap and Filler
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Oil Tank View Glass - Yamaha R5 & DS7. Reproduction part no longer available from Yamaha. Replaces stock part no. 214-21761-00
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Oil Tank View Glass - Yamaha RD350 RD250 RD200 RD125. Reproduction part no longer available from Yamaha. Replaces stock part no. 360-21761-00.
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Out of stockVintage Japanese Style Tool Kit - metric took kit for vintage bikes, not specific to the RD but includes most common tools and sizes you'll need. Includes:
- Pliers
- Combo Screwdriver (straight blade / phillips)
- Spark Plug Wrench
- Wrenches, 8/10mm, 10/12mm, 14/17mm
- Pouch - fits nicely in the RD tool tray
