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RD400 / RD350 / RD250 / R5 Parts

RD400 / RD350 / RD250 / R5 Parts

The two-stroke bullies. In 1972 Yamaha released the 350cc R5. In the same year, Yamaha 250 and 350 twins left the four-stokes behind. A four-stroke motor would not win Daytona until 1985. The fact is Yamaha for the record won thirteen consecutive times. These small two-strokes could not be beat. These were production out of the box stock, powerful, high rpm motors that would take the harsh punishment that was built into a small, lightweight package. The earlier models were piston port induction up to the year 1973.

Yamaha then introduced the Reed Valve induction system creating even more controllable power. This design was certainly a people pleaser. RD’s became a top selling bike in the U.S. They were also known to become an excellent production-class road racer. The perfect choice for the privateer racer. The RD’s also had taken their place as the local street racer or custom Café bike to own.

In 1976 the RD350 was replaced by the increased piston displacement and stroke length of the RD400. This motorcycle also had it reigns on and off the track. Yamaha keeping its two-stroke “king of the hill” claim to fame until 1979 when the factory production street two-stroke journey came to its end.

One of the emerging trends over the last several years has been the ease in creating these two-stroke screamers into customized café and custom street machines or you can just do a complete restoration.  MikesXS has a very experienced team of professionals that can help answer any questions you might have on your custom project. was started in 2001 with the Yamaha rider in mind and has continuously been one of the largest and most comprehensive supplier of vintage Yamaha parts.  MikesXS carries everything you need to service your motorcycle, including: high output charging systems (PMA kit), hard tail frames, big bore kits, petcocks, oem type oil filters, carburetor (carb) kits, brake calipers, clutch repair kits, master cylinders, gasket sets, 7/8 inch handlebars, cam chain guides and many other items! All of the inventory listed on our site is in stock and usually ships within 24 hours.  We ship all over the world from the United States to Australia, New Zealand, Japan, UK, France, Germany and over 50 other countries

We are proud to have many of our parts manufactured for us by the very same factories that made the original OEM parts and we also support and carry parts from custom parts builders like Hugh's Handbuilt, Monster Craftsman,  TC Bros, Pamco, XS Charge, Analog Cycles, Moto Gadget and many other custom motorcycle fabrication parts.  

Fitment Includes:

1970 R5A

1971 R5B

1972 R5C

1973 RD250

1973 RD350

1974 RD250A

1974 RD350

1975 RD250B

1975 RD350

1975 RD400C

1976 RD250C

1976 RD400C

1977 RD250D

1977 RD400D

1978 RD250E

1978 RD400E

1979 RD250E

1980 RD250E

1980 RD250F

1981 RD250LC

1982 RD250LC

1983 RD250LC

1984 RD250LC

1985 RD250LC

 *please see product pages for specific fitment information

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  1. Master Cylinder - Single Disc - 13mm - XS650 - 1977-1984
    Part #
    Master Cylinder Assembly - 13mm. bore (for single Front disc brake) Yamaha OEM type. Complete with brake lever, brake light switch, banjo bolt and banjo bolt washers (Pr.). Recommended for 1977-84 XS650's Mirror mount has left hand Threads.For single disc brake.Also fits RD250, RD350, RD400, XS750 Standard 1977-79, XS8... 
  2. Brake Caliper - Right or Left Side - XS650 - 1972-1976
    Part #
    Early brake Caliper with pads assembly (72-76) Fits Right or Left side XS650OEM reference number: 306-25810-09-00Also fits: RD350 73 
  3. Fuse Box - XS650 - RD400 - XS750 - XS1100
    Part #
    XS650 Fuse Boxes located on top of the battery are a part of the original wiring harness and have not been available separate, we now offer a copy of this box as shown plus matching terminal block & terminals + the battery top cover it attaches to. Cut the old fuse box from your main harness, attach the connector b... 
  4. Ignition Coil - 4.0 Ohm - XS650
    Part #
    Ignition Coil - Exact replacement original type coil for all XS650's with contact point ignitions. Replaces original coils that are weak from heat and age and restores spark strength to the ignition system. Hitachi type CM11-50/50B/52A 4 Ohm primary - 2 required per bike. Plug wires not included.OEM Ref.# 254-82310-60-... 
  5. Rim - WM Type - 2.5x18 - Aluminum - 36 Spoke - XS650 - XS400
    Part #
    WM 2.5x18x36 hole Rim, polished aluminum.Very hard to find new. Classic 36 hole pattern will work with many vintage bikes. Works with XS650, XS400.This is a quality rim comparable to what you see on other sites for much more money.Great for chopper and bobber projects.DOT approved. 
  6. Rim - H Type - 2.15x18 - Black - 36 Spoke - XS650 - XS400
    Part #
    H 2.15x18 36 hole shouldered aluminum rim BlackHard to find. Works with XS650, XS400 36 spoke hubs. Classic 36 spoke pattern works with other vintage bikes but we cannot guarantee which. This is a quality rim comparable to what you see on other sites for much more money.Dot approved.Great for chopper, bobber and ra... 
  7. Washer - Cylinder Head Sealing - Brass - XS650
    Part #
    Brass Cylinder Head Washers - Can replace all cylinder head sealing washers or all Head Nut Washers used on any 650. 22mm. OD x 10.5mm. ID x 4mm. Thick This is a replacement for OEM # 90210-10004-00, it is not the same part. Mikes XS part # 01-0650 is the equivalent OEM part. 
  8. Damper Rubber Metal side cover XS650 1978-80
    Part #
    Damper Rubbers (Pk./2 for 1 sidecover) Fits: To 1" wide upper hanger for Metal side cover as used on XS650vSe/Sf/2F/G 1978-80. See web site model ID photo's of sidecovers if you are unsure of your sidecover type.Also fit DS7, R5, RD250, RD350 
  9. Spark Plug Cap - 14mm - 90 Degree Elbow - LB05FP - NGK
    Part #
    NGK Stock Number 8030, LB05FP Black NGK 5k Ohm Resistor Plug Cap. 90 degree elbow - for 14mm thread spark plugs with terminal stud. Rubber waterproof boot to seal out the elements. Same as LB05F except with a slightly longer rubber boot. Fits HONDA 1968-1973 350 CB350      ... 
  10. Fork Seal Set 1977-84 XS650 35mm fork tubes
    Part #
    Fork Seal Set - 35 x 48 x 10.5/11 - Fits: 1977-84 XS 650's (35mm Fork Tubes). Made In Japan by OEM supplier.Also fits: RD350 LC YPVS 83-84, RD350 LCF 85, RD350 LC H 86-90, TZ350 76-78, RD400 F 79, XS400 J/K 82-83, XS400 DOHC 82-87, XS400 R Seca J/K 82-83, XS500 76-78, XS750D 77.Double springNote: Measure fork tubes be... 
  11. Swingarm Grease Seal Set
    Part #
    Swingarm Grease Seal Set - Holds grease into bushings & shaft area of swing arm. Helps seal out water & dirt. If your bike has originals they should be re-placed! Made in Japan by original supplier. Fits: All 650's 1970-1984 
  12. Brake Shoe Set - Rear - XS650 - TX650 - XS1 - XS2 - RD350 - RD400
    Part #
    Rear Brake Shoes ( 2pc.set ) Fits: Rear wheel drum brake's on all 1970-84 XS/TX 650's Also compatible with:RD250 73-77, RD250 LC 80-82, RZ250 80-82, RD350 A/B 1973-75, RD350 LC 80-82, RZ350 80-82, RD400 1976-78, TX650 71-74, TX650 A 74-76, XS1, XS1b, XS2EBC equivalent 514 Vesrah equivalent VB-225 
  13. Exhaust Head Stud
    Part #
    Exhaust Stud for Cylinder Head - 10mm. x M1.25 x 43mm. Long with plated finish.Fits All 650's 1972-84 Sold Individually 
  14. Switch - Brake Light - Rear - XS650 - RD400
    Part #
    Rear Brake Light Switch - Fits: All XS650's 1970-84.RD250, RD350, RD400, R5, DS7 1970-79 
  15. Gear Change Lever - XS650
    Part #
    Gear Change Lever with rubber. Chrome plated steel - Fits: 1970-84 650'sAlso fits: XS850 1980-81 and RD's 
  16. Gear Change Lever - Rubber - XS650 - 1970-1984
    Part #
    Gear Shift Rubber - Fits: 1970-84 650's OEM Ref.# 132-18113-01Also fits: RD's 
  17. Shock Absorber Set - 12 3/4 inch (325mm) Eye To Eye - Monza
    Part #
    Shock Absorber Set - (Monza Traditional) standard size for 1974-84 XS650 TX650's - Dual Progressive wound Chrome Springs & Long Black top shroud with black shock body.12 3/4" (324mm.) eye to eye., Includes preload wrench & set of eye rubbers.Can be used as replacement on: Yamaha RD400 1976-79, XS400 1977-81,... 
  18. Master Cylinder Assembly - Front - Dual Disc - 16mm - Universal - Magura
    Part #
    Magura Brake (RH) Master Cylinder Assembly 16mm. Replaces original types on All Yamaha XS650 and TX650's 1972-84. For front dual disc brakes 1977-84 Standard and Special, and single disc 1972-76.Compact lightweight design (10.3oz.), complete with brake switch, matching 10 x 1.0 Banjo Bolt and banjo bolt washers (2pc.)... 
  19. Master Cylinder -13mm - Universal - Magura
    Part #
    Magura 13mm Brake (RH) Master Cylinder. Genuine Magura, made in Germany.Replaces original types on single disc brakes Yamaha XS650 1977-84, Standard and Special.Compact lightweight design, complete with brake switch, matching 10 x 1.0 Banjo Bolt and banjo bolt washers (2pc.) Ideal for street tracker or custom build use... 
  20. Master Cylinder - Front - XS650 - RD250 - RD350 - RD400
    Part #
    Front Brake (RH side) Master Cylinder Replacement Lightweight (9.5oz.) Front Master Cylinder Assembly.Ideal for 77-84 Street Trackers or stock bikes with Single Disc brake.12.7.0mm. piston bore. Brake Light Switch and Banjo Bolt included.Reservoir has fluid level sight glass. Compact size.NOTE: This unit has an 8mm. mi... 
  21. Switch - Ignition - w/Keys - XS1 - XS2 - R5 - DS7 - TX650
    Part #
    Ignition Switch with Keys - OEM Ref. # 256-82508-30/31,366-82508-30Fits: Yamaha XS1/XS1b/XS2 (1970-72), 1970-72 R5, 1970-72 DS7, 1973 TX650 
  22. Fork Seal Set 1970-76 XS1 XS2 XS650 TX650 34mm fork tubes
    Part #
    Fork Seal Set - 34 x 46 x 10.5 - Fits: 1970-76 TX/XS 650's (34mm fork Tubes). Made In Japan by OEM Supplier.Also fits:DT250 74-78, DT250 MX 77-78, RD250 73-75, RD350 73-75, DT400 75-78, DT400 MX 77-79, RD400 76-78, TX500 73-74, XS500 75-78, TX650 A 74, XS750 1977Note: Measure fork tubes before ordering. 
  23. Needle Bearing Conversion Kit - Swing Arm - XS650 - RD350 - RD400 - XS400
    Part #
    Swing arm Needle Bearing Conversion Kit - Kit includes - Needle Bearings & Hardened shaft. Made in Japan.The needle bearings replace the original steel, plastic or bronze bushings. You do not need those in addition to this kit. Fits: XS/TX650's 1974-84, RD250 73-75, RD350 A/B 73-75, RD350 LC 80-82, RD350 LCYP... 
  24. Swing arm bolt Grease Fitting
    Part #
    Swing arm bolt Grease Fitting - Replace original grease fittings with ones that fit to common American size grease guns. Fittings fit to ends of swing arm shaft (bolt). 2 required per bike. Fits: All 650's 1970-84Also fits Center Stand Bolt XS650 item #37-0001 
  25. Wheel Bearing Kit - Front - XS650 RD350 RD400 SR500 TX650 XS750 XS850 XS1100
    Part #
    Front Wheel Bearing Kit Includes: (2) 6303-2RS Nachi ball bearing (with synthetic shields), (1) Front wheel Oil Seal - (SD-28-47-7), (1) Front Wheel Oil Seal - Speedo drive side - (SDO-45-56-6)Made in Japan - Highest Quality - make sure any you are comparing are made in Japan and same quality.Fits:RD350 A/B 1973-75, RD... 
  26. Rim - WM Type - 2.50x36 - Black - 36 Spoke
    Part #
    WM 2.50x18x36 hole Black rim, aluminum.Very hard to find new. Classic 36 hole pattern will work with many vintage bikes. Works with XS650, XS400. This is a quality rim comparable to what you see on other sites for much more money.Great for chopper, bobber and rat bike projects.DOT approved. 
  27. Float Needle Valve Assembly - RD250 - RD350 - RD400 - XS1B
    Part #
    Float Needle Valve Assembly . Equivalent to OEM: 16030-017 16030-019 16030-025 23L-14107-25-002.5 Float Needle Valve Assembly found on Mikuni VM24- VM26 and VM28 carbs Fits Kawasaki Z1 KZ900 KZ1000 (77-80) KZ650 (77-81) Fits Yamaha TA-125, RD250 1973-75, RD350 1973-75 (OEM ), RD400 76-79, XS1B 1971... 
  28. Gas Cap w/ Keys - XS650 - 1976-1979
    Part #
    Gas Cap with keys - Fits: 1976-79 XS650 "Standard" models and our 64-7700 and 64-7702 Fuel Tanks. Note: Caps from "Standards" and "Specials" do not interchange.Fits most: RD400 (76-80), XS750 (77-79), XS850 (80-81), TX650A (74), XS650B (75), XS360C (76-77), XS500 (76-77), Also fits: RS100-DX, RS125, RD200, RX100, RX125 
  29. Rim - H Type - 2.15x18 - Aluminum - 36 Spoke - XS650 - XS400
    Part #
    H 2.15x18 36 hole shouldered polished aluminum rim. Very hard to find. Classic 36 hole pattern will work with many vintage bikes. Works with XS650, XS400. This is a quality rim comparable to what you see on other sites for much more money. Great for chopper, bobber projects. OEM reference number 94421-18146-00 for ref... 
  30. Cable Lubricator
    Part #
    Cable Luber - Yamaha pressure type (Sold each)Water & dirt are blown down cable by lubricant when pressure spray can nozzle is applied. Spray lube sold by most bike shops.Cable lubrication tool. 
  31. Float Needle Valve Assembly - XS2 - TX650 - XS650 - RD350 - XS1100
    Part #
    Carb Float Valve (Needle & Seat) - threaded type. Fits: XS2 (1972), TX650/A (1973-74), XS650B-F (1975-79) with stock Mikuni BS38 CV CarburetorsAlso fits:RD250 (DS6) and RD350 (R5) 70-72 OEM 168-14190-20-00, XS500 C/D 76-77, TX750A 73-74, XS1100 78-79 
  32. Valve - Tire - Tubeless - Mag Wheels
    Part #
    Tubeless Tire Valve for Yamaha Mag Wheels.Correct size for XS models with factory Mag Wheels. Includes valve core. 
  33. Cap - Valve Stem - Pkg 2
    Part #
    Metal Valve stem caps (Pk/2) with core removal notch. 
  34. Seal - Oil - Wheel - Right Hand Side - XS650 - RD400 - SR500 - XS750 - XS1100
    Part #
    Front wheel Oil Seal - (SD-28-47-7-1) Fits: Front on All 650's 1973-84, RD350 A/B 73-75, RD400 76-78, SR500 78-84, XVS535 87-01, XVS535S 96-97, TX650A 74, XVS650 98-06, XS750 78-80, XS850 80-81, TDM850 91-99, XS1100 78-81 
  35. Kickstart Rubber
    Part #
    Kickstart Rubber - Fits: Small 13 mm. shaft (later type kick start levers) as shown.Fits XS650 and RD's 
  36. Tachometer - RPM - Black Face - Chrome Mini - 60mm Diameter
    Part #
    Tachometer - Chrome Mini - 2.25" Diameter (60mm) - LED with Black face, 0-12,000 RPM for Yamaha 650's. Internal illumination.Mechanical (cable drive) type. 1:5 ratio.Other bikes with 1:5 ratio: XS360, XS400, RD350, RD400, SR500 
  37. Monza Sport Shock Absorber Set 12.75" (324mm) black w/chrome spring
    Part #
    Shock Absorber Set - (Monza Sport) for 1974-84 XS/TX650's -Dual progressive wound Chrome Springs & Chrome top shroud with Black shock body.12.75" (324mm.) eye to eye., Includes preload wrench & set of eye rubbers. 
  38. Clutch Lever (Silver) Yamaha XS2 TX650 XS650 RD350 RD400 XS400 XS500 TX750 XS750
    Part #
    Clutch Lever (Silver) - Fits: XS2 (72), TX650/A (73-74), and XS650 B/C/D (75-77) OEM Ref.# 583/1J3-83912-10, 214-83912-00Also fits: RD125 75-77, RD200 74-76, RD250 73-77, RD350 73-75, TZ350 76-78, XS360 76-77, RD400 C/D/E 76-78, XS400 77-78, TX500 73-74, XS500 75-78, TX750 73-74, TZ750 74 & 77, XS750 77-78. 
  39. Clutch Cable Adjuster Dust Cover
    Part #
    Clutch Cable Adjuster Dust Cover - Rubber boot/cover keeps dirt from contaminating cable adjuster threads.Replaces original OEM cover.Fits: 1978-84 XS650's and hundreds of other Yamaha's. 
  40. Turn Signal - Rear - Short Stalk - XS650 - XS400 - XS750 - XS850 - SR500
    Part #
    Rear Short stalk Signal Lamp. For those wanting signal lamps tucked in closer to the frame. 8 mm. stud mount. Clear amber lens.Yamaha XS650 and other vintage motorcycles. Will work on XS400, XS750, XS850, some SR500.DOT approved 
  41. Turn Signal - Rear - Medium Stalk - XS650 - XS400 - XS750 - XS850
    Part #
    Rear Medium stalk Signal Lamp. Length from end of stem to inside of lens is 67mm, length from the "step" in the stem is 46mm, total length is 147mm. 8 mm. stud mount. As used for European Markets. Lens has milky translucent center. DOT approved. E mark.Yamaha XS650. Will work on XS400, XS750, XS850, some SR500. 
  42. Switch - Ignition - XS650 - 1976-1977
    Part #
    Ignition Switch with keys - Fits: XS650 1976-77 May adapt to other years.OEM Ref. #584-82508 (No fork lock on this type)Note: Yamaha has made various versions of this switch and all are sold under the same OEM part number. Ours does Not have a connector plug but wire leads with terminals. You may have to fit this switc... 
  43. Screws - Contact Breaker Plate - XS650 - RD250 - RD350 - RD400
    Part #
    Contact breaker plate Screws (2pc.) and flat Washers (2pc.) - Set for main backing plate adjustment.Fits: XS650, RD250, RD350, RD400 
  44. Adapter Set - Mirror - Left Hand - 10mm
    Part #
    Mirror Adaptor Set - 10mm. Adaptor for Left hand threads, allows use of all conventional mirrors on Yamaha's (All Yamaha's have a Left Hand thread mirror stem on one side). 
  45. Mirror - Rectangular XS650 "Special" Type - Set
    Part #
    Rectangular Mirror Set - Stock for 1978-84 XS650 "Special". Chrome Set L&R - OEM Ref.# 2G2/4M4-26290-00 Note: Yamaha Right hand mirrors (Brake side) have a Left hand thread. Left side mirrors (Clutch side) have a right hand thread.Also fits: XJ650, XJ750, XV750, XS1100Approximately 5" stem, 5 1/4"x3 1/4" mirror 
  46. Mirror - Round Original XS650 Type - Set
    Part #
    XS650 Mirror Set - Original type mirrors as used on pre 1978 XS650's. 10mm. thread in type with round Black body & 7" chrome stems.OEM Ref.# 1J7-26290-01-00R & 11-00LNote: Yamaha Right hand mirrors (Brake side) have a Left hand thread. Left side mirrors (Clutch side) have a right hand thread. 
  47. Washers - Copper - Cooler Mounting Bolts - Pkg 10
    Part #
    Copper Washers - Pk./10 for Heiden Filter Cooler mounting Bolts. Washers also fit clutch cover socket screws ( Oem Ref. # 90430-06014-00   MikesXS part #18-0903 ). Fits RD's with hydraulics. 
  48. Handlebar - Black Superbike 7/8"
    Part #
    Handlebar - Black Superbike 7/8"XS650, XS400, all bikes that use 7/8" handlebarsDimensions:Width - 30 1/2", Rise - 2 1/2", Pullback - 5 5/8" x 7/8"Dia. 
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