Monocoque carbon fiber crown and legs for BMX Race use only Forged and CNC machined aluminum dropouts, choose 10mm or 20mm dropouts 348g XS for Mini/Jr, 444g XE for Expert, 448g XL for ExpertPro, 588g X for Expert-Pro SX, 655g X2 for Pro SX (all weighed with uncut 180mm steerer) 3rd party web sales must be an Authorized Dealer