ISIS is a splined interface bottom bracket/crank design used by Truvativ, FSA, Raceface and other brands.

FEATURES:

• Aluminum cups require TruVativ or compatible installation tool
• Heat-treated thick-wall chromoly spindle handles the abuse of downhill riding
• Precision full-complement sealed cartridge bearings
• M12 crank bolts included (unless noted)

SPECS:

• Spindle Interface Type:ISIS
• BB Shell Width (mm):68 , 73
• Bottom Bracket Shell I.D.:1.37
• Spindle Length:128
• BB/Frame Interface:English
• Weight:406