The little two-stroke 125 now has a completely new frame whose geometry stems from the four-stroke models. This new unit is more comfortable, lighter and more reliable. The layout and appearance have been totally redesigned with 80% of the components being new. Great care was taken during component design to improve both ease of fitting and the machine s appearance. New components include tank and filler cap, seat, side panels, front mudguard, radiator guard, air filter box and frame protectors. The newly designed frame is made from oval and box section steel tubing that provides a stronger and lighter structure. The new frame also means that there are changes to the geometry, wheelbase, steering angle and weight distribution. The footpegs have been moved forward by 15 millimeters and the seat height has been decreased of 10 millimeters. The seat is more comfortable and its new shape provides a better riding position and makes it easier for the rider to change position. The filter box too has a completely new, more compact design. The rear suspension has a new Soft Damp system with a new leverage ratio and progression curve. This means less load on the frame and chain tension effect is optimized as is traction. The new tubular aluminum swing arm features an asymmetric geometry extruded box aluminum centre housing an off-set shock absorber. New black anodized Excel wheels add to the overall aggressive look. The 2009 WR125 now has a five-port cylinder from the CR motocross models and a new 38 millimeter TMX Mikuni carburetor. The exhaust system and silencer are completely new.