The Primo Freemix Freecoaster wheel is built using a 36H Primo VS double-wall rim laced 3X with black 14G spokes and nipples to a Primo Freemix freecoaster hub. The Freemix hub features a CNC machined 6061 aluminum hub shell, proven KHE internals for durability, 1-pc chromoly driver with angular contact bearing (ACB) for additional side load support, 14mm hollow heat-treated chromoly axle, and an additional thrust bearing behind the clutch that uses needle bearings to reduce drag when backpedaling. To protect the hub flanges from grind damage, the Freemix Pro includes both drive side and non-drive side plastic hub guards that slip over the cone nuts for easy installation.
The Female version features 14mm chromoly center axle with hollow 3/8"x24tpi axle bolts.