A telescoping security door bar with a rubber base and black finish braces doors for extra protection—offering sturdy support similar to the Box One Stem Lock 1.5 Tapered on a steerer tube.

Description

Box Components stem/steerer lock suitable for tapered 1.5" (1-1/2") steerer tubes. Cold forged and fully CNC-machined from a number of high strength aluminium alloys, Box One Stem Locks offer 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.

Features

Fits tapered 1.5 inch steerers. Made for tapered 1.5 inch (1-1/2 inch) steerer tubes, so check what your fork runs before ordering.
Backup if a steerer breaks. It adds protection against losing your front wheel and fork legs in the event of a broken steerer tube.
Cold forged, fully CNC machined. Box cold forge the parts then machine them, which is what you want holding the front of your bike together.
Two high strength alloys. The post is 7075-T6 and the base is 2014-T651, each chosen for the job it does.
61 to 72 grams. Depending on version it weighs 61 or 72 grams, so it is peace of mind for very little weight.