Box Two Bottom Bracket Square-Taper Chromoly Size:113mm Additionally included are Lightweight Black

Additionally included are Lightweight Black Anodized Aluminum Nipples to reduce rotational weight further

The airflow ports are artfully sculpted to both reduce weight and drag

For riders seeking maximum protection from the elements

With precision sealed bearings and cold-forged

Available in 31

Box Two Bottom Bracket Square-Taper Chromoly Size:113mm Additionally included are Lightweight BlackBox Two Square Taper Chromoly Bottom Brackets are the best option for young BMX racers and other users of three piece cranks in search of an affordable, high performance square taper bottom bracket. Each bottom bracket is hand assembled with a Chromoly spindle, sealed bearings, forged and CNC machined alloy cups, and a composite center spacer seal.