Stock wheels are typically pretty soft, and the ones on our testbike were dinged in short order after some aggressive testing. For this build, we chose ultra-strong, enduro-race-ready D.I.D ST-X rims ($200 front, $230 rear; black only) with Bulldog spokes and spline-drive nipples ($100 per wheel) all from Dubya USA (dubyausa.com, $60 labor per wheel). To control costs, we laced the new parts to the stock hubs. Pirelli Scorpion Rally front tire ($117) works great with an MT-43 Trials rear ($121). Both have been long- wearing and are a good compromise for dual use. If you ride in a lot of mud, a true knobby at the rear is a better choice. A combination of SBS racing brake pads (RSI 694 front, $42; SI 790 rear, $34) working on good-quality stock discs provided a major performance upgrade for very low cost.