Graves Motorsports Yamaha WR250R + WR250X Hi-Flo Exhaust Insert. Increase horsepower, torque and throttle response with the simple and cost effective WR exhaust modification. This works on both the WR250R and WR250X models for supermoto and off road applications.
Author: Chuck Graves
Prior to developing the ADSD full works system for the WRR and WRX 250 I wanted at least a little more punch out of the 250 with a low cost to performance value while retaining a low decibel rating. Reviewing the stock systems EXUP and silencer design it was clear that we could make a small (stealth) change to the stock silencer by improving the exit of the stock silencer.
Mission accomplished!
