So last year I built a cr80 with an xr100 motor, it's a blast but a little on the small side for long trails. So starts a new build, 1998 yz125, with an xr200 motor.
The motor is going to be a bit mix n match, xr200 bottom end with the crank stroked 8mm, atc200x cylinder for the big fins, crf230 piston because it has a 4mm smaller deck height, crf230 head because bigger valves and straighter ports, crf cam modified for XR ignition.
Frame will eventually get an 18" rear wheel, and sprung/valved for my weight.
The motor is going to be a bit mix n match, xr200 bottom end with the crank stroked 8mm, atc200x cylinder for the big fins, crf230 piston because it has a 4mm smaller deck height, crf230 head because bigger valves and straighter ports, crf cam modified for XR ignition.
Frame will eventually get an 18" rear wheel, and sprung/valved for my weight.