Check the listing for details. Profile Design Supersonic Ergo+ 35 SLC Carbon Aerobar. Color: Black, Condition: New. Listed at 259.95 USD. BRAND NEW Profile Design Supersonic Ergo+ 35 SLC Carbon Aerobar. FREE shipping to continental US only. The Supersonic/Ergo+/SLC series aerobars offer industry leading ergonomics, adjustability and low weight – maximizing your comfort and speed.The Supersonic is the top model of the Flyt series brackets – utilizing an innovative internal wedge clamp to securely hold the extension. It offers easier adjustments and a greater fit range than anything that came before it.It is now paired with the new Ergo+ armrest that takes the popular Ergo shape and adds 40mm of length as well as a new textured cushion.PerformanceThe Supersonic/Ergo+ platform is designed to give riders the freedom to find their best possible position with a huge range of independence adjustments.Fit DataArmrest Offset: -85mm to -17.5mm in 15mm stepsArmrest Width: 124mm to 290mm in 18.5mm steps (With Extensions at 100mm)Armrest Stack: 58.5mm (no riser kit) to 138.5mm in 5mm increments (With aftermarket Riser Kit)