External English (BSA) threaded bottom bracket for 73mm shells. We use only Enduro bearings and silicone seals for the most durable and smoothest bottom brackets available. Fully serviceable.

Includes:

• (2) - Enduro Silicone dust seals
• (1) - 2.5mm aluminum BB cup spacers for use with 68mm wide BB shell
• (1) - 1.8mm aluminum BB cup spacers for use with 68mm wide BB shell
• (1) - 0.7mm aluminum BB cup spacers for use with 68mm wide BB shell
• (2) - 0.5mm crank spindle spacers
• (2) - 1.0mm crank spindle spacers

Direct replacement for Shimano HollowTech II bottom brackets!

• Bearings: Enduro ABEC-3
• Color: Black
• Bottom Bracket/Frame Interface: ISO/English or BSA Threaded (1.37 in x 24 TPI)
• Bottom Bracket Shell Width (mm): 68-73mm
• Bottom Bracket Shell I.D.: 33.6-33.9 mm
• Crank Spindle Type: HollowTech II (Shimano, FSA, Etc.)
• Crank Spindle Diameter: 24mm
• Weight: 105g
• Packaged for retail display
• View more detail on WheelsMFG.com