Purpose built extension optimized specifically for below the basebar mounting. The ergonomic S bend featuring a higher rise reduces fatigue while maintaining an aerodynamic position. L1 Bracket. Designed to get low, the L1 bracket sits at 35mm of stack placing the rider in a more aggressive riding position. F-19a Aluminum Armrest. 4 position fore/aft adjustment along with 15 of rotational adjustment to dial in the fit. Velcro-backed EVA Foam pads affix directly to armrest without additional straps.