Promax EX-1 Alloy external Sealed Bottom Bracket 68/73mm Black MFPN=25-EC-SR600 8 Drop Bend Style Compact

8 Drop Bend Style Compact Cable Routing Internal Material Carbon Width Measurement Center Width 42 Defined Color Black

Ambidextrous design allows the same part to be used as either a right or left lever

6 Bolt Position Inner/Outer

M12 crank bolts included (unless noted)

Promax EX-1 Alloy external Sealed Bottom Bracket 68/73mm Black MFPN=25-EC-SR600 8 Drop Bend Style CompactPromax EX 1 Alloy external Sealed Bottom Bracket 68 73mm Black. EX 1 External bottom brackets feature cold forged and CNC machined alloy cups dual labyrinth bearing covers and precision sealed bearings. They are the perfect match to Promax CF 2 and HF 2 cranks and ultimate upgrade to the budget BBs sold with most crank sets. Fits all 24 millimeter bottom bracket spindles and frames with 68 or 73 x BC1. 37 bottom bracket shells TECH SPECS Bottom