• Adjustable Universal Steering Damper. Notched incremental 6 position adjustment. Great steering damper for 250cc - 500cc motorcycles. Requires individual mounting varies bike to bike, includes damper bracket with 8mm stud. 8mm stud can be used in the RD's reflector mount on the frame gusset just under the tank.
  • Sale!

    LED Headlight Bulb with Fan for RD’s – H4 type, Compact, fits in the RD headlight bucket

    Original price was: $52.50.Current price is: $48.50.
    LED Headlight Bulb with Fan for RD's. There's not much clearance in the RD headlight buckets due to all the wires and makes fitting most LED ligths with fans difficult. And without the fan you can't get very bright lights. This compact H4 LED bulb and fan assembly fits nicely in the bucket and at 3,800 lumens is very bright. Note: This bulb is a replaceable H4 type. The original RD headlight was a sealed beam H4 type and the bulb was not replaceable. This bulb is primarly inteneded for use with an aftermarket headlight lens/bulb assembly.
    • 3800 Lumens / 1 Amp draw
    • Ultra white color
    • Built in auto fan
    • Installs in minutes - Plug and Play, this compact bulb assembly fits in the RD headlight bucket
    • Lifetime warranty
  • Yamaha RD250 RD350 Airbox Lid - Reproduction Part Part no. 278-14412-01-00 CAP, CLEANER CASE 1, no longer available from Yamaha.
  • RD Chain Guard Damper Kit - Fits all RD's, R5, DS7 & More see complete fitment below Kit Includes: Rubber Damper, Special Washer, Collar, Screw/washer See product detail for complete fitment
  • Spark Plug Cap - 5K or 0K resistance for 14mm spark plug, with 90 degree Elbow (RD/RZ/R5), NGK Type - Reproduction, sold each. These caps are just right for the RDs and other 2 stroke vintage Japanese twins. Includes waterproof covers. For terminal stud type plugs or plugs with removeable terminal nuts (BR8ES, BR8HS). It is not recommended to use both resistor caps and resistor plugs, use either resistor plugs with non-resistor caps, or non resistor plugs with resistor caps.  
  • Throttle Grip Washer (goes between throttle and switch housing). Can be used with all RD's R5's DS6/7 & most bikes with standard 7/8" Grips. Part no. 90201-261L1, washer plate These are often missing causing the throttle to return slowly or not all.
  • 128MB USB Drive - Parts Diagrams, Service Manuals and Wiring Diagrams. Choose model and click add to cart Included on this flash/USB drive by model are the following .PDF files: RD350:
    • RD350 Parts Diagrams by Yamaha
    • RD350 Service Manual by Yamaha - older Yamaha manual - out of print
    • RD350 Wiring Diagram - Aftermarket diagram
    • 1976-1977 RD400 Parts Diagrams - by Yamaha
    • 1978 RD400 Parts Diagrams - by Yamaha
    • 1979 RD400 Daytona Parts Diagrams - by Yamaha
    • RD400 Service Manual - Aftermarket Euro Haynes Manual - out of print
    • RD400_(US)_wiring_diagram - Aftermarket
    These files are commonly available on the internet and Economy Cycle has not vetted or checked for accuracy, provided for informational purposes only, use at your own risk.
  • Sale!
    Vintage Yamaha T-Shirt - from the 1975 "someday you'll own a Yamaha" advertising campaign. Premium pre-shrunk soft cotton t-shirt. Official licensed Product. Charcoal color, available in L, XL, and 2XL. Choose size and click add to cart
  • Yamaha RD Shift Shaft Upgrade Kit - Includes: (This is the Original UK made kit, not the Chinese copy) - New CNC 6082 Billet Housing / PB1 Bronze Bushing - O-ring Seal Nitrile - Shift Shaft Seal - Acetal Shaft Sleeve - Easy to install, no mods required Though they have great transmissions, Yamaha 2 stroke twins aren't known as the best shifting bikes, and as they age shifting becomes even worse. The engine case opening for the shift shaft wears away causing the seal to fail, resulting in a constant oil leak, sloppy shifting, difficulty finding neutral, and missed shifts. Replacing the seal is just a temporary fix until it quickly fails again. This kit helps eliminate those issues. Economy Cycle tested for fitment/performance, highly recommended. You'll notice a difference in shfiting right away as the shaft/lever have much stronger support from the new bushing. The kit helps reduce miss shifts and revving to the moon, as well as making it a bit easier to find neutral. So sure, the kit eliminates the annoying oil leak with double sealing (by the O-ring and shaft seal), but to us as RD performance enthusiasts, this is a performance improvement allowing for precise and quick shifting. Great for street or race applications. Easy to install.
  • We designed these new kits with RD enthusiasts in mind and includes the following specs / features
    • Works with the engine in the frame (most dial gauges are too large and won't fit in the RD due to the frame rails sitting just above the heads)
    • Metric Gauge - no need to convert from SAE and one less chance to make a mistake when converting
    • Increments:
      • 10mm stroke 1/100mm graduation
      • Big hand sweeps 1 mm
      • Smal hand in .10 mm increments
    • 10, 12, & 14mm adapters makes this kit suitable for most 2 strokes
    • 2 Extensions
  • 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. DSC03078 DSC03080  
  • Reproduction Neutral Switch & Seal Assembly RD/RZ/R5/DS6/7 all years, includes neutral switch, seal & 3 screws, part numbers below. We've had lots of requests for a less expensive alterntative. The plastic isn't as pretty white as the originals but this kit is half the price of OEM and the netural switch isn't a visible part.