After a long process, Chase decide to make on of the biggest changes they have done so far on any RSP frame, adding on the Aero System Seat Tube, in addition, they improved the look with a refined top tube, and a updated Chain Stays on the Mini & Expert Frames.

Aero Seat Post sizes:
Mini, Junior and Expert Frames use a 25.4 ELEVN Aero Post and QR Seat Clamp
Expert XL and above all use a 27.2 ELEVN Aero Post and QR Seat Clamp

NOTE: Please be sure to add the ELEVN AERO seat post and seat clamp to your order. This frame is not compatible with any other seat post/clamp options.