Profile Racing Spline Drive BMX Aluminum Spider - 4-bolt / 104mm - Blue - USA Made 31.8mm (1-1/4") Color: White w/ Black Sidewall

Color: White w/ Black Sidewall

The BlackOps MX2050 rear hub has an alloy hub shell with a  3/8" male axle

For use with 1/2" drive socket wrench

Drive Side Compatibility: Right Hand Drive

ERD: 392mm

Profile Racing Spline Drive BMX Aluminum Spider - 4-bolt / 104mm - Blue - USA Made 31.8mm (1-1/4") Color: White w/ Black SidewallThe Profile Spline Drive Spider is machined from billet aluminum plate and supplied with a CrMo steel adapter insert already pressed in. It works with 4 bolt, 104mm chainrings and has a 19mm bore. This will fit 3 piece cranks that have 48 spline, 19mm spindles. Color: Blue Manufacturer's Note: This Profile Racing component was colored by anodizing. Anodizing is how we dye the metal. We make every effort to color match all anodized items, color shades