If arm pump is a problem you regularly deal with, it might be time to look into getting a Fasst Flexx 1 1/8" Handlebar to increase comfort and get your grip strength back. Fasst Flexx bars reduce arm pump by isolating vibrations and impacts, keeping them away from your hands so you can retain much more of your grip strength without suffering from arm pump. Fasst Flexx bars do this by mounting each bar end on a hinged pivot point that is free to move and compensate for bumps and vibrations. The movement of these pivoting bars is then leveraged and dampened by a set of elastomer bumpers mounted underneath the pivot joints. These elastomer bumpers control both rebound and damping, so while you won't feel movement if you're just pulling back and forth on your bars, a large amount of numbing vibration and jolting impacts will be directed away from your arms and into the Fasst Flexx Handlebars. This fatigue-reducing design is built into an assembly that handles abuse easily thanks to the 7000 series aluminum alloy materials, adjustable elastomer bumpers in 4 different densities, and a wide variety of bends that work for nearly all riders. Plenty of riders swear by these bars, and if arm pump is an issue for you we think the Fasst Flexx Handlebars are a great way to help solve the problem.