110cc and 125cc Dirt Bikes
The sizes most riders land on after a 70cc. Big enough for a teenager to ride all day, small enough to pick up alone, from TrailMaster, Apollo, Tao Motor and RPS.
101-125cc Dirt Bikes on MotoBuys: 31 models in stock, priced from $649. Actual displacements in this range include 110cc, 107cc, 125cc. Engine size is the quickest way to narrow a shortlist: it drives the power, the seat height and the rider age a machine suits. Each product page lists the exact displacement, transmission and assembly level.