The Box One Hub Lock Ring is a CNC-machined 6061-T6 aluminum replacement for the stock steel cassette lockring on Shimano-compatible freehub bodies. It holds your cog on the driver and weighs just 7 grams, offered here in red, blue or black anodizing. Features Extruded and CNC-machined aluminum, lighter than a steel lockring Direct replacement for the steel lockring on Shimano-compatible cassette hubs and drivers Anodized finish for color-matching your build Made for racers and riders who want a lighter, color-matched cassette setup Specs Material: 6061-T6 aluminum, CNC-machined Outside diameter: 43.6mm Weight: 7g (0.25 oz) Compatibility: Shimano-compatible cassette hubs and drivers Colors: Red, blue, black Fitment Fits BMX cassette hubs and drivers with Shimano-compatible threading. Aluminum is softer than steel, so use a proper lockring tool and do not overtighten.
