I bury the speedometer at full throttle every time I take mine out. 2010 Touring with Carpenter 240 hp package, 15 or 20,000 miles since I installed the Carpenter package, no issues yet.
At 120 or 130 mine used to start an odd, slow weave along it's longitudinal axis, I always thought it was the windshield, turned out it was the bags, with them off I hit 140 no problem. Carpenter 240 hp package, so it has a lot more in it.