Stan­dard X-Treme long frame 12 – 18 deep width 16 Adjusta­bil­ity — Rear Tube Assem­bly­One way to accom­plish this con­cept of becom­ing one with your wheel­chair is through adjusta­bil­ity. The ”X-treme” has full adjusta­bil­ity through its rear tube assem­bly. Whether you are look­ing for the per­fect front and rear seat height, adjusta­bil­ity in your cen­ter of grav­ity or being able to fine tune your wheel­chair, this is one three wheeler that fits the bill.Custom Rear Wheelie Bar­Colours has once again answered your request. We are the first to come out with a fully adjustable and rota­tional rear wheelie bar. By using this acces­sory you will be able to rely on a fourth wheel for per­for­mance on the ten­nis court. No longer will you need to have your wheelie bar cus­tom bent for your spe­cific seat positioning.Adjustable Foot Plate­With ver­ti­cal and hor­i­zon­tal adjusta­bil­ity you will be able to set your leg and foot angle per­fectly to meet your com­fort and com­pet­i­tive needs.Product photo may not exactly match the prod­uct offered for sale. Please refer to the prod­uct description.