(James Lissimore/) The quarter-liter two-stroke cross-country model’s Yamaha Power Valve System (YPVS) uses a different thickness washer, increasing time for the power valve to completely open.

Roaming around on this gorgeous thing must be a delight. Back in the late 1980s, riders knew Yamaha's lightweight RD350 YPVS F2 as a force to be reckoned with. In 1983, the manufacturer introduced ...

As with the 900LC, the ‘700 YPVS’ has been created by taking a standard Yamaha XSR700, replacing the stock bodywork with a Velocity-Moto bodykit, then adding replica paint (which they can also ...