Yamaha YZF & WRF Performance Projects (Motorbooks Workshop)

The hottest segment of the off-road motorcycle market is high-performance four-strokes, and the most popular of those are Yamaha's motocross and off-road line of machines.

In this Motorbooks Workshop title, Off-road enthusiasts would be treated to 30 projects for their Yamaha high-performance four-stroke motorcycle.  It would include the YZ250F, YZ400/426/450, and the WRF variants.

Mods would focus on making the bikes work better day-to-day, with a few engine overbores and so on in the mix.