Profile Design Riser KitProviding you with amazing comfort and control, this brilliant riser kit enables you to find your perfect handlebar height. This means you can take up a dominant riding position on every run and travel with power and poise towards the podium. Coming equipped with an incredibly tough forged and machined alloy body construction, this is an ideal component for handling all the challenges that come with a long day out on the road.Features: Body Material: Forged and machined Alloy Bolt Material: Marine grade Steel Compatibility: Profile Design Sonic Ergo (35a, 45/25a and 50a), Supersonic Ergo (35a, 45/25a and 50a) and T+ Carbon Series, T+ Aluminium Series aerobarsBuy Profile Design Components from Chain Reaction Cycles, the World's Largest Online Bike Store.