48T Spline CrMo Bottom Brackets for Chromoly cranks.

68/73mm x 155mm Downhill Bottom Bracket with 48 Tooth Spline 4140 19mm CrMo spindle

19mm Titanium spindle 

Our AC MTB Downhill Bottom brackets are designed with 4 precision cartridge bearings. They have all spacers necessary to adjust for the proper chain line. 

MTB Square Taper Bottom brackets are available in 110mm, 113mm, and 122 mm in either CrMo or Titanium spindles. 

MTB ISIS  Bottom Brackets are made with 4 angular contact sealed cartridge bearings. They are available in 113 or 118 mm spindle lengths, and in either CrMo or titanium material. They are used for both freeride and downhill applications.