SQUARE TAPER

 With precision sealed bearings and cold-forged, aluminum CNC machined cups, Box One Titanium Square Taper bottom brackets are the best option for young BMX racers and other users of three piece cranks in search of performance gains and weight savings Hollow, custom titanium-nitride coated titanium spindles and carbon fiber center seals, helping keep the weight down between 185 and 190 grams Other features include cups that are anodized black with anodized gold inner seals, and...

 With precision sealed bearings and cold-forged, aluminum CNC machined cups, Box One Titanium Square Taper bottom brackets are the best option for young BMX racers and other users of three piece cranks in search of performance gains and weight savings Hollow, custom titanium-nitride coated titanium spindles and carbon fiber center seals, helping keep the weight down between 185 and 190 grams Other features include cups that are anodized black with anodized gold inner seals, and...

 Box Two??? Square Taper Cromo 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 68mm ENG SQR JIS 108mm Chromoly

 CNC machined hollow chromoly spindle Sealed bearings Forged alloy cups 1.37` x 24 TPI English thread SHIMANO Equivalent BB-UN55 68mm  ENG SQR JIS 113mm Alloy 220-240g

 CNC machined hollow chromoly spindle Sealed bearings Forged alloy cups 1.37` x 24 TPI English thread SHIMANO Equivalent BB-UN55 73mm ENG SQR JIS 113mm Alloy 220-240g

 CNC machined hollow chromoly spindle Sealed bearings Forged alloy cups 1.37` x 24 TPI English thread SHIMANO Equivalent BB-UN55 73mm  ENG SQR JIS 116mm Alloy 220-240g

 CNC machined hollow chromoly spindle Sealed bearings Forged alloy cups 1.37` x 24 TPI English thread SHIMANO Equivalent BB-UN55 73mm  ENG SQR JIS 122.5mm Alloy 220-240g

 CNC machined hollow chromoly spindle Sealed bearings Forged alloy cups 1.37` x 24 TPI English thread SHIMANO Equivalent BB-UN55 68mm  ENG SQR ISO-CMPY 115mm Alloy 220-240g

 CNC machined hollow chromoly spindle Sealed bearings Forged alloy cups 1.37` x 24 TPI English thread SHIMANO Equivalent BB-UN55 68mm  ENG SQR ISO-CMPY 102mm Alloy 220-240g

 CNC machined hollow chromoly spindle Sealed bearings Forged alloy cups 1.37` x 24 TPI English thread SHIMANO Equivalent BB-UN55 68mm  ENG SQR ISO-CMPY 111mm Alloy 220-240g

 CNC machined hollow chromoly spindle Sealed bearings Forged alloy cups 1.37` x 24 TPI English thread SHIMANO Equivalent BB-UN55 68mm  ENG SQR JIS 103mm Alloy 220-240g

 CNC machined hollow chromoly spindle Sealed bearings Forged alloy cups 1.37` x 24 TPI English thread SHIMANO Equivalent BB-UN55 68mm  ENG SQR JIS 107.5mm Alloy 220-240g