Profile 39t Spline Drive BMX Sprocket - 19mm - 48-spline - Blood Red - USA Made 2.25/2.50-18 making it more rigid and

making it more rigid and allowing the rim to be wider without adding material

Releases in lateral twist mode

Gold 36-hole high-flange sealed hubs

It also uses the most advanced drilling pattern of any bicycle rim on the market today

Profile 39t Spline Drive BMX Sprocket - 19mm - 48-spline - Blood Red - USA Made 2.25/2.50-18 making it more rigid andThe Profile Spline drive sprocket is CNC machined from 7075 Aluminum in the USA. This sprocket does not require a sprocket bolt; instead, it has a hardened CrMo steel insert that matches up to the 48 splines on the crank axle for pure, direct power transfer. This has 1 8 tooth width for use with most freestyle street & single speed chains. It will only work with 19mm, 48 spline 3 piece cranks. Size: 39t Color: Blood Red (this is a dark red color) This