Used by team Yamaha Pro racers; This steering stabilizer is extremely adjustable and rugged. This Precision Stabilizer was designed for the Yamaha RAPTOR 125/250 and on and comes with all hardware needed for an easy installation and mounts up to your RAPTOR 250 in approximately 15 minutes; no drilling, welding, or grinding needed. The new Precision ELITE Model has a built in reservoir, wider and more linear adjustment range, and larger wear surfaces for even greater product longevity. Plus up to 65% better impact damping than previous models. The stock steering stem diameter for the RAPTOR 125/250 is 1.25 dia. All known after market stems will fit.