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Yamaha was riding the wave of popular 400cc engines and now reaping the benefits of the XS series as well. It is therefore not a surprise that their engineers wanted to combine the two to create an ideal bike. Evolving directly from the earlier XS360 model, Yamaha XS400D was introduced to US market in 1977 and to Europe in early 1978. It was advertised as a commuter model, targeting students and low-income motorcyclists.
It had four stroke aircooled twin engine which powered the single overhead camshaft by chain. The engine and 6 disc clutch, was fitted together into the horizontally split crankcase so typical for XS series. Early XS400 had points ignition system and electric starter backed up with manual kickstart. The engine with pair of 34mm Mikuni carbs was fitted into a tubular steel frame with dual cradle. First XS400s also had squared-off 11l fuel tank, non-adjustable telescopic forks at front and swingarm with 5way adjustable shocks at rear. The 1978 XS400 became immediate bestseller in Germany and continental Europe.
As with many models, Yamaha was trying various features to see what suited their customers at different markets like self-cancelling indicators, kickstart only on economy XS400s, also editions such as Special, Special II. & Heritage. But generally speaking, there were the following changes throughout the time:
1979 XS400F received a teardrop 16l tank and slightly stepped seat, swing arm was extended by 40mm, cast alloy wheels and drum brakes fitted at rear
1980 XS400SG / SE got even more “cruiser like” appearance with deeper step on the seat, pull back bars, 16” rim at rear wheel, improved exhaust system and other cosmetic changes
1982 XS400R Seca was ultimately a different design altogether. It was meant to be the highlight of the series with two overhead camshafts, new Yamaha induction control system (YICS), black narrower engine with alternator laid over the gearbox, hydraulic telescopic front forks, monoshock swing arms at rear and brand new tank design with even larger capacity.
Today Yamaha XS400 is appreciated by fans and hobbyist for its simple technology and endless modification possibilities. Whether you want to keep the classic style of your bike or turn it into a Yamaha XS400 café racer, Yamaha XS400 scrambler or Yamaha XS400 bobber, the option is yours.
Since Yamaha XS400 was so popular in it’s days, there still lots of these models on market. Their parts were and some of them still are easily accessible. Some of those that Yamaha stopped producing we have decided to reproduce.
There are also Yamaha XS400 owners clubs and specialised forums all over the World, especially in Europe, USA and Australia so if you are struggling with your XS400 restoration or personalisation project, you have ample of people to turn to for advice, just check out of these links: XS400.com (EN) and XS400.net (DE)
This section contains aftermarket reproduction parts for:
1977 Yamaha XS400 D
1978 Yamaha XS400 E / 400-2E
1979 Yamaha XS400 F /2F
1980 Yamaha XS400 G /SG
1981 Yamaha XS400 H /SH
1982 Yamaha XS400 J/R/RJ/SJ
1983 Yamaha XS400K / RK