- Replaces OEM number 1A0-15415-00-00, Fits on the original larger inner cover
- Reproduction Part, no longer available from Yamaha
- Cast Aluminum
- Applications: Yamaha RD400 1976- 1980 (all years worldwide) Yamaha RD250D, DX (Later Euro versions of the 250, **NOT FOR USA 250/350**)
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Yamaha RD400 / RD250D Ignition Cover -
2 Stroke Oil Injector Nozzle - RD250/350/400 (carb oil injector nozzle). Economy Cycle reproduction item, no longer available from Yamaha. Sold each. -
***Note: We cannot ship Lomas exhausts to Europe. To purchase Lomas pipes for Europe, please visit JL-exhausts.com***
JL (Jim Lomas) Expansion Chambers - Yamaha R5/RD350/76-77 RD400. Simply put, JL chambers are the best pipes available for your air cooled RD or R5. Available in mild steel or stainless steel with stainless or carbon fiber silencers. Excellent performance across the rev range and high quality craftsmanship, you won't be disappointed!
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Kickstand Relocation Kit by HVC - for bikes with modified exhuast/expansion chambers. Our kit accomplishes two things. It allows the stock side stand to be used with aftermarket exhaust and it takes out that terrible lean angle of the bike when it is resting on the side stand. This kit will work with any after market exhaust using your existing side stand on the following motorcycles:- Yamaha DS7/R5
- Yamaha RD250/RD350
- Yamaha RD400
- Yamaha RD400F
- Our steel bracket that has black oxide coating to prevent rusting
- A longer spring that is designed and manufactured just for this kit
- Hardware and a drill bit
Note: This item is not eligible for discount
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Labyrinth Seal RD250/350/400/R5/DS7 (all years) OEM quality reproduction seal. Original part (278-11515-00-00) no longer available from Yamaha. Measures 62mm o.d. x 30mm i.d. x 18mm width. Sold each. -
ThreeBond Liquid Gasket TB1184 - Great for sealing engine cases!
- A synthetic rubber, visco-elastic sealer that is semi-drying
- Applications include sealing transmission case covers, motorcycle cases, timing chain cases, side covers, 2-piece cylinders, clutch housing bolts and oil filter mounting surfaces
- Excellent resistance to water, oil, gasoline and chemicals; temperature range -40°C to 150°C
- Available in 3.4-ounce net wt. tubes
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Lomas Exhaust Gasket for Silencer, sold each. -
Lomas Exhaust O-rin, sold each -
Magnetic Oil Drain Plug for RD's/R5/DS7/RZ350. Also fits most Yamaha motorcycle from the 60's through the mid 80's. Magnetic oil drain plug collects metal particles and debris protecting your engine from damage. Includes washer. M14 x 1.5 (pitch) x 14mm long (threaded portion of bolt and magnetic tip). -
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. -
Neutral Switch Wire Grommet. Reproduction part, no longer available from Yamaha. Sold each. -
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 -
Oil Drain Plug Gasket - RD250/350/400/R5/DS7. Aftermarket part, thick fiber gasket similar to OEM but at a reasonable price. Sold each, or packs of 5 or 10. Replaces Yamaha OEM part no. 4F4-14766-00-00 -
Oil Injection Line Clip, 90468-02033-00 OEM Originals $6.99 each or Reproduction Clips - $1.95 each -
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. -
Yamaha RD350/400/250/R5/DS7 Â 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. -
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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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. -
Oil Pump Housing Main Gaket - Yamaha RD350 RD400 RD250 R5 DS6/7 RZ350, sold each. -
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 Includes the following seals: Main, Priming wheel, Shaft, Piston (includes 3 sizes) Indludes the following gaskets: Main Pump Body, Pump to Case, and Bleed screw Includes new proper JIS (Japanese Industrial Standard) screws for pump body and bleed screw Includes Economy Cycle Oil Pump Rebuild Guide Not Included: Plug for pumps without a priming wheel (later 400's & RZ350) These rarely need replacing, the rest of the kit will work with these type pumps Satisfaction guaranteed or your money back One year warranty against manufacturing defects -
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. -
Oil Pump Shaft Thrust Washer (steel) - Yamaha RD350 RD400 RD250 RZ350, sold each. 90201-08624-00 -
Yamaha Oil Pump Shims OEM Sold each. - Available in .03mm .05mm .10mm Generic oil pump shims available in stainless .10mm -
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. -
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 -
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 -
PJ1 - High temp black exhaust paint. A heat and flame resistant flat black paint that resists chipping and rusting. Withstands temps up to 1500 degree F. 13oz net weight. Note: Additional shipping charges apply to paint, calculated at check out. Cannot ship Internationally. -
roX Piston Modification for Yamaha RD's. We perform the piston skirt modification and ship piston ready to install. Piston modification fees are non-refundable. Price per piston. -
ProX Top End Bearing - RZ350/LC350 (all) 16x21x22 -
Racing Magnetic Oil Drain Plug for RD's/R5/DS7/RZ350. Also fits most Yamaha motorcycle from the 60's through the mid 80's. Magnetic oil drain plug collects metal particles and debris protecting your engine from damage. Includes washer.- Predrilled holes for easy safety wiring
- Kit comes complete with pre drilled cap and locking clip already safety wired to a mounting tab
- Strong embedded magnet
- CNC from high quality aluminum
- Anodized in Black or Blue
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Genuine Yamaha Clutch Steel Plates for RD 250/350/R5/DS6/DS7 Clutch Steel Plates. Can be used with Vesrah clutch friction discs or stock Yamaha clutch friction discs. Sold Each -
RD350 Yamaha OEM Bolt Kit. New Original Yamaha Bolts. All bolts required for left & right crankcase covers. Note: one bolt pictured, kit includes 19 bolts for right and left crankcase covers. -
RD400 Black Allen Engine Bolt Kit. 21 High quality black Allen (socket head) Bolts. All bolts required for left & right Crankcase covers. Also available in stainless Kit includes instructions for correct bolt length and location -
Genuine Yamaha Clutch Steel Plates for RD400 (all)Â Cutch Steel Plates. Can be used with Vesrah clutch friction discs or stock Yamaha clutch friction discs. Sold Each -
21 High Quality Stainless Steel Allen (socket head) Bolts All bolts required for Left & Right Crankcase covers. Also available in Black Kit includes instructions for correct bolt length and location -
RD/RZ/R5/DS6/7 Clutch Holder Tool. -
Sale!
Exhaust Gasket, 360-14714-00-00 (Between header and muffler. Reproduction part, sold each. 2 required per bike. Fits all years RD250/350 -
Genuine Yamaha Friction Plate for RD250/350/400/R5/DS6/DS7. Sold each. *The current part number for this pate is 5Y1-16331-01-00. This part number supercedes/replaces the following prior part numbers: *360-16321-00-00 RD350/250 *168-16321-10-00 R5/DS7/DS6 *360-16321-00-00 RD400 -
RD250/350/400/R5/DS6/DS7 Heavy Duty/FZR Friction Plate Original Yamaha, Sold Each. This part will work in place of the following: *360-16321-00-00 RD350/250 *168-16321-10-00 R5/DS7/DS6 *360-16321-00-00 RD400 *5Y1-16331-01-00 Superceded number for the above -
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. -
RD250/350/R5/DS7 Black Allen Engine Bolt Kit. 19 High quality black Allen (socket head) Bolts. All bolts required for left & right Crankcase covers. Also available in stainless Kit includes instructions for correct bolt length and location. (note picture is RD400 kit, RD350 Kit is same with 19 bolts).
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RD250/350/R5/DS7 Stainless Allen Engine Bolt Kit. 19 High quality stainless Allen (socket head) Bolts. All bolts required for left & right Crankcase covers. Also available in black. Kit includes instructions for correct bolt length and location. (note picture is RD400 kit, RD350 Kit is similar with 19 bolts)
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RD250/350/R5/RD400 Cylinder Stud - OEM Yamaha part. Sold each. -
RD250/RD350/R5/RD400 Crankcase Studs - OEM Yamaha part. Sold each. Note: 90116-08232-00 are the longer studs (2 per engine), 90116-08064-00 are the shorter studs (6 per engine)
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RD400 Clear Clutch Cover Kit - Anodized in Silver or Black by Siberdyne Motorcycle Parts. (Economy Cycle is the USA distributor for Siberdyne products). Note: This fits all years and version of the RD400 (worldwide), also fits the later European RD250. This kit is NOT for the USA RD250/350/R5. See additional info below. Note: this part does not include the engine cover itself. -
RD400 Exhaust Joint - 2R9 Type (Non-USA, larger diameter) - SOLD EACH. Reproduction part replaces 2R9-14615-00
