Yamaha XS400
motorcycle
The Yamaha XS400 was produced by Yamaha from 1976 to 1983. The XS250 & XS360 are nearly identical variations of the same XS400 platform. Special, Special II, and Heritage badges denoted "factory custom" trim lines.
The XS400 had a four-stroke, air-cooled, overhead-cam straight-twin engine with a 180° crank angle, which reduces linear vibration at the cost of some axial vibration. The 392 cc (23.9 cu in) engine produced 36 bhp (27 kW) @ 8100 rpm.
A dual overhead-cam variant (XS400k) was also produced in 1982 and 1983 with a rear mono-shock and updated styling.
The XS400 came equipped with a 6-speed transmission, wet plate, 6 friction disk clutch, chain drive, tachometer, self-canceling turn signals, both electric and kick starters, adjustable rear shock absorbers, center stand, and an automatic fuel petcock. Early and economy models came with spoked wheels and drum brakes, while later and upgraded models received cast alloy wheels and hydraulic disc brakes. Later models also upgraded the early mechanical points ignition system to a modern solid state electronic system.
The number in the model name indicates the engine displacement.
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This entry incorporates text from “Yamaha XS400” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.