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Crankcase Breather - Yamaha RD250/350/400/R5/RZ350. Reproduction part replaces Yamaha part no. 583-15371-00-00
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Exhaust flange Set for DG Expansion Chambers by DG, Sold in pairs with springs for the Yamaha RD350 (all years) and RD400 (1976-1978). Note: picture is RD400 flanges, RD350 flanges basically the same with slightly smaller diameter. Choose model and click add to cart.
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DG Expansion Chambers Performance Exhausut for RD350 All Years and RD400 1976-1978. 13+/- hp increase, 10 pound weight reduction and bolt on easily. Steel construciton. Requires re-jetting of carburetors and new exhaust gaskets. Jets and exhaust gaskets are available here on the website.
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Dipstick O-ring Yamaha RD250/RD350/RD400 (all years). Buna O-ring, safe for motor oil and crankcase temperature.
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EBC Carbon Fiber Lined Impregnated Friction Disc Set for Yamaha Yamaha RD250/350/400, R5, DS6/7, RZ350
- EBC Friction CKF Clutch Kit - CKF2279
- Clutch kit plates are carbon-fiber impregnated
- These tough clutch plates extend engine life, improve drive, increase the heat threshold of the clutch and improve rider feel
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EBC Carbon Fiber Lined Clutch Kit for Yamaha RD400 & RZ350 & Banshee. Includes steel plates, Carbon fiber lined friction plates and heavy dudt springs.
- EBC DRCF Series Clutch Kit - DRCF43
- Heavy-duty clutch kit designed for hard use and race applications
- Feature carbon-fiber lined clutch friction plates, a full set of steel plates and heavy-duty clutch springs
- Ideal for use in 2-stroke performance applications
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EBC Clutch Friction Disc Set for Yamaha Yamaha RD250/350/400, R5, DS6/7, RZ. Includes 7 friction discs.Cork-based clutch material impregnated with aluminum particles to increase wear life and heat resistance. Highly compressed construction avoids swell and clutch drag, Ideal for general-purpose street performance.
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Sale!EBC Clutch Kit for RD400 & RZ350. Includes steel plates, friction plates and springs. Featuring anti-swell friction plates, long lasting pin planished steel plates for better lube distribution and heavy duty clutch springs. Note packaging recently changed but same great clutch kit.
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EBC Heavy Duty Clutch Spring Kit for Yamaha RD250/RD350/R5/DS7. Set of 6 springs.
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EBC Heavy Duty Clutch Spring Kit for Yamaha RD400/RZ350/BANSHEE. Set of 6 springs.
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ECON PERFORMANCE Heavy Duty Clutch Kit for the RD350/400/R5. Kit includes high performance FZR friction plates with wider friction face, Yamaha OEM steel plates, and heavy duty high performance clutch springs. This kit significantly upgrades the stock clutch and is suitable for long lasting street performance or high output racing engines. Unlike the Barnett, the lever pull with this kit isn't too stiff and is similar to stock, yet still provides maximum holding power. Easy installation, includes instructions. Note: You'll probably want to pick up a new clutch cover gasket to go with the kit, also sold here on the site in the gasket section. Note: RD400 Kit pictured. Note: The stock rubber cushion rings are not required with this clutch. Choose model then Click add to cart.
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Economy Oil Pump Block Off Plate Kit. Kit includes:Yamaha RD350/400/250/R5/DS7
- Aluminum block off plate
- Yamaha oil pump gasket
- Stainless steel allen bolts and lock washers
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Exhaust springs by Moose Racing. Suitable for aftermarket exhaust / expansion chambers. Stainless Steel, sold in pairs. Available in multiple lenths (measurement is from hook to hook) 90MM fits most Yamaha RD/RZ applications. Choose length and click add to cart
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Exhaust Springs for RD/RZ Lomas & DG Pipes - Stainless, Sold in pairs.
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Expansion Chamber Silencers - Black Carbon Fiber or Stainless Steel, sold each. These work with Lomas expansion chambers, see dimensions below for other applictions Stainless dimensions: 250mm Long Weight = 592 grams Mounting = 3 each M6 on 38mm bolt circle Carbon Dimensions: 250mm Long Weight = 497 grams Mounting = 3 each M6 on 38mm bolt circle
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Fuel/Vent/Oil Line 1/8" id x 5' - Clear or Black. Polyurethene line can be used for fuel, oil or vent line. Sold in 1/8" (id)diameter x 5 feet, in clear or black. Does not harden or crack. Choose color and click add to cart.
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Yamaha RD400 / RD250D Ignition Cover
- 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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2 Stroke Oil Injector Nozzle - RD250/350/400 (carb oil injector nozzle). Economy Cycle reproduction item, no longer available from Yamaha. Sold each.
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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.
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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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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 15mm long (threaded portion of bolt and magnetic tip).
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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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Neutral Switch Wire Grommet. Reproduction part, no longer available from Yamaha. Sold each.
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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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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 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.
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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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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.
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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.
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ProX Top End Bearing - RZ350/LC350 (all) 16x21x22
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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
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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.
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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
