3D bars are redesigned with performance rider in mind. Keeping lite alloy line for little riders with 80 lb rider weight limit. LITE 3D 6061 T10 alu bars are lighter than most of carbon bars. Adding new PLUS ALU line with 110 lb rider weight limit for those who are bigger, stronger, yet not ready for crmo bars. PLUS line includes 5.75, 6.5 and new 7.5" size using thicker 3mm 6061 T10 tubing. CRMO bars made for strongest and fastest guys out there. 5.75, 7.5 and 8"