Why We Make It Most of us came up on BMX, whether we raced or just jumped our bikes over random stuff in the woods with our friends . It gave us a foundation in bikes that was hugely valuable. So , we mak e BMX hubs , not only for all the riders still on track trying to go fast, but also to honor some of our core bike memories. Why You Want It The 36-hole front, with no rotor mount, is made for 20mm axles. These are redesigned, lightweight, race-focused BMX hubs . We m aintain stiffness and weight with a one-piece hardened alloy axle. These hubs feature optimized flange diameter and flange angles for 20" rims , and the same large diameter bearings as our MTB hubs for improved speed and durability. Engineered, manufactured and assembled in Portland, Oregon, USA King Lifetime Warranty Wide flange placement Fits 100x20mm BMX axles Legendary made-in-house LD bearings Easily serviceable with a 2.5mm hex and pick or pen knife Completely re-buildable with our Universal Hub Service Tool Responsibly lightweight Ceramic bearing upgrade available Available in 36-hole spoke count Available in all current King colors Hub Specifications Axle Width: 100mm Center to Flange(either side): 31.8mm Flange Diameter: 57.4mm Spoke Hole Diameter: 2.6mm