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. Performance The Supersonic/Ergo+ platform is designed to give riders the freedom to find their best possible position with a huge range of independence adjustments. Fit Data Armrest Offset: -85mm to -17.5mm in 15mm steps Armrest 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) There are 80 distinct position options achievable just by moving the armrests. Combine that with risers and this bar offers 1440 possible configurations. As a clip on bar it is also possible to adjust the extension width and tilt easily.