Jonathan Bentman,
06 January 2012 11:32
A decade ago Yamaha led the four-stroke revolution in dirt bikes. By taking its high-revving, R1-style, five-valve technology and applying it, first in motocross with the YZ400F, then enduro with the WR400F and massively successful WR250F, the Japanese firm rode the vanguard into a new era. It won world championships, hearts and sales. But eventually European competition got the better ...
