Kept properly adjusted, It's like a Tootsie Pop, the world may never know. Harley has used them since the 80's, and with excellent results, and over the years, thier belts have gotten narrower, near half the width the Savage currently uses(Done to fit a wider rear tire). The main variable (maybe?)between Harley, and Savage belt would be materials and quality. One huge difference, if it breaks, you don't have to dissasemble half the engine
, like big twin Harley owners do, just to replace the thing. If you ever take it off, 1.Put it back on running in the same direction. 2. Don't bend it backwards, or tighter than the front pulley would. Those things could, and have led to premature failure.