SX-E5RHIGH STRENGTH ADAPTIVE FRAME Built with new generation BIK500 lightweight high strength steel and a 6061 aluminum alloy rear swing arm, the Warrior SX E5R frame achieves over 10% weight reduction compared with conventional steel designs. Engineered to grow with you the adjustable geometry allows the seat height and rear subframe to evolve with the rider, perfectly suited to children aged 59 years. Adjustable ride height allows for better ergonomics as