Cold forged and fully CNC-machined from a number of high strength aluminum alloys, The Box One Stem Lock offers peace of mind and a level of added protection against losing your front wheel and fork legs in the event of a broken steerer tube. The stem lock runs through the centre of your steer tube providing compression for your headset and steering system. These are praticulary good for Carbon forks that use a carbon steerer tube and cannot accept a top cap or star nut. The Box One Stem Locks are backwards compatible with existing Box forks and may work with forks from other manufacturers.
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