WAY BACK IN THE late 80s and early 90s, the big four Japanese factories all produced a 400cc version of their 750cc superbikes. Kawasaki’s ZXR400 of that time was the mirror image of its ZXR750 big brother, with a twin-spar alloy frame, cool paint job, funky air intake tubes, sports exhaust, flat slide carbs, the lot. The same went for Suzuki’s GSXR400, Yamaha’s YZF400RR and Honda’s uber-cool RVF400, which came complete with a single-sided swingarm and V4 engine. Pretty trick, with lots of fruit.
These bikes were shrunken versions of their full-sized namesakes and were epically popular in some parts of the world, particularly in Japan where registration laws made the bigger superbikes excessively expensive to own, if not impossible. The 400cc versions were fast enough, light, handled beautifully, made great noises…