The halo mxf bmx front hub is light enough to be used as a race hub yet strong enough to be used for freestyle thanks to its forged alloy body and its 15mm hollow alloy axle the mxf provides you with an optimal balance of weight and strength whilst minimising flex the mxf is a smooth sealed bearing alloy front hub with wide spaced flanges for high strength high triangulation wheel builds there are two stock bolt configurations for this front hub the 28h or 32h for race and the 36h f