Consistent with its throwback styling and lack of an electric leg, the SR400 is otherwise a minimally updated version of the original SR500 single last sold stateside in the early '80s (and sold more-or-less continuously in Japan and other Asian markets since then). A bar-mounted compression release—just like SRs from back in the day—helps the rider kick over the 399cc thumper with minimal effort. There are scant few other concessions to modernity, just a single disc front brake with a 268mm rotor (the rear brake is a drum) and reliable fuel injection instead of a grumpy Keihin carburetor. Simplicity is the name of the suspension game, too, with a non-adjustable telescopic fork bookended by no-name shocks with no-tech, ramp-type preload adjustment. Yamaha's set the price near the affordable end of the scale, $5,990. That keeps it from being the cheapest bike in the class, but we definitely like the idea of an inexpensive lightweight that delivers just the right combination of reliable mechanicals and old-school cool.