External English (BSA) threaded bottom bracket for 68-73mm 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