Yamaha DT400 Parts (1975–1979) – OEM & Aftermarket Motorcycle Parts

Looking for Yamaha DT400 parts? This collection includes OEM and aftermarket Yamaha DT400 motorcycle parts for enduro models where fitment applies. Whether you are maintaining a rider, sorting a big-bore two-stroke project, or restoring a classic Yamaha dual-purpose machine, this page helps you find dependable Yamaha DT400 replacement parts faster.

The Yamaha DT400 brought larger-displacement two-stroke power to the enduro category while keeping the broad usability that made the DT line so popular. With its torquey engine, simple chassis, and street-legal versatility, the DT400 remains a favorite among vintage Yamaha trail-bike enthusiasts.

Buyer intent around this family often includes Yamaha DT400 parts, DT400 enduro parts, top-end parts, carburetor parts, oil-injection service parts, brake parts, fork seals, clutch parts, and ignition components. Accurate year-and-model fitment matters because these bikes are now firmly in restoration territory.

At Old Bike Barn, we specialize in OEM and aftermarket Yamaha DT400 parts for riders who want dependable fitment and trusted quality. Whether you are performing routine service, correcting age-related wear, or bringing a classic enduro back into shape, this collection is built to make parts shopping easier.

This page includes: engine gasket sets and seal kits, top-end and intake service parts, carburetor components, fork seals and suspension components, throttle, clutch, and brake parts, cables, levers, controls, brake service items, and electrical components such as ignition parts, switches, and wiring essentials.

All parts are curated specifically for Yamaha DT400 models where fitment applies, helping riders shop confidently for maintenance, repair, and restoration parts. Whether you are rebuilding the top end, fixing fuel delivery, or replacing worn trail controls, we focus on proper fitment, reliable operation, and long-term durability.

Hard-to-find OEM and aftermarket parts, accurate year-specific fitment, inventory curated by riders who wrench, and friendly support from knowledgeable motorcycle specialists — that’s why riders trust Old Bike Barn for Yamaha DT400 parts. We help keep classic Yamaha enduros on the trail.