Yamaha RD350 / RD400 Parts | 1973–1985 OEM and Aftermarket Parts
Looking for high-quality Yamaha RD350 and RD400 parts? This collection includes OEM and aftermarket replacement parts for all Yamaha RD350 and RD400 models, covering production years from 1973 through 1985. Whether you’re restoring a legendary two-stroke twin or maintaining a hard-ridden classic, this collection brings together the essential parts needed to keep these iconic machines alive.
Introduced in 1973, the Yamaha RD350 helped define the modern two-stroke performance motorcycle. Lightweight, quick-revving, and brutally fast for its displacement, the RD350 delivered explosive acceleration thanks to its air-cooled parallel-twin two-stroke engine. Its combination of low weight and strong power-to-weight ratio made it a dominant force on both the street and the track.
In 1976, Yamaha evolved the platform into the RD400, increasing displacement and refining torque delivery while retaining the raw, high-performance character that made the RD series famous. The RD400 offered improved rideability, stronger mid-range power, and continued two-stroke simplicity, making it one of the last great high-performance street-legal two-strokes sold in the U.S.
Together, the RD350 and RD400 represent the peak of Yamaha’s street-going two-stroke engineering — motorcycles that remain highly sought after by collectors, racers, and vintage enthusiasts today.
Quality RD350 & RD400 Parts for Restoration & Maintenance
At Old Bike Barn, we specialize in hard-to-find Yamaha RD350 and RD400 replacement parts to support accurate restorations and dependable long-term ownership. Whether you’re rebuilding a top end, servicing carburetors, or refreshing suspension and braking systems, this collection provides the parts you need to keep these two-stroke legends running strong.
This collection includes: engine gasket sets and seal kits, carburetor rebuild kits and fuel system components, ignition and electrical parts, fork seals and suspension components, throttle, clutch, and brake cables, OEM-style levers, grips, and control hardware, brake pads, shoes, and hardware, and other essential wear items commonly required on 1973–1979 RD350 and RD400 models.
Parts are curated with attention to shared architecture between the RD350 and RD400, while accounting for year-specific and displacement-specific differences where necessary. As original factory parts continue to disappear, we focus on keeping critical service components available for these increasingly rare two-stroke machines.
Why Choose Old Bike Barn?
Hard-to-find OEM and aftermarket parts, accurate year-range coverage, inventory curated by riders who wrench, and friendly support from vintage motorcycle specialists — that’s why builders trust Old Bike Barn for Yamaha RD350 and RD400 motorcycle parts. We help keep the two-stroke era alive.
