Halo Sub-4 BMX Racing Front WheelHalos Sub 4 Race wheels have a background of World and National Championship wins. Available from under 1500g for a pair, the Sub 4 wheels accelerate like nothing else, yet can still take impacts when trying out new lines. The front wheel is fully anodised. Sub 4 Race wheels are built around halos hugely successful MX Series hubs. MX Series hubs all feature huge flange spacing for lateral stiffness and sealed bearings for longevity all conditions.