1975 Yamaha DT 400B

This is from the site Bring a Trailer (https://bringatrailer.com/) ...

This 1975 Yamaha DT 400B was refurbished by the selling dealer’s shop over the past four years with new paint and plating, a rebuild of its 397cc 2-stroke single, new bearings for its 5-speed transmission, a rear end overhaul, machined stainless fasteners, and other subtle modifications. It has since been displayed at several shows including the Quail Motorcycle Gathering in Carmel, California to illustrate the capabilities of the seller’s shop. This DT400 is offered with build records and a California title. The frame and other components were reportedly stripped and epoxy coated before being refinished in PPG single-stage satin urethane. Surfacing primer and a sealer were used on the body panels, which were then repainted in Yamaha Yellow and silver using House of Kolor top and clear coats. The chrome was refreshed by Sherm’s Plating in Sacramento, and fasteners were replaced with stainless steel items machined to replicate the originals. The fuel tank and side covers wear custom-painted graphics in the style of the factory-applied decals. The seat was reupholstered over the existing foam, and rubber trim and seals were replaced. Instrumentation consists of a 100 mph speedometer and a 10k rpm tachometer with internal warning lights. Both gauges have been rebuilt with new faces, wiring, and cables. The odometer was reportedly zeroed and 57 miles have been added since. The mirrors and control cables were replaced, and wiring was routed through the handlebars. Power comes from an over-square 397cc 2-stroke single with a radial finned head and 32mm Mikuni carburetor. The engine was rebuilt from the crank up with components replaced, machined, or upgraded where appropriate. A recent break-in service included re-torquing of the fasteners and adjustment of the cables, chain, headset, and brakes. The swingarm was machined to accept bronze bushings with thrust washers, and the wheels were rebuilt with new spokes and Shinko Trail Wing tires. New brake shoes were fitted and arced to the drums, and the stock Thermal-Phase rear shocks were overhauled. Receipts from the rebuild process will be provided, and photos taken during the work are shown in the gallery below.

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