Box Components Extremum External Bottom Bracket (24mm) (Blue)

BX-BB13EXRAC-BL
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The BOX Extremum External Euro BB features a BMX specific bearing design that uses titanium coated SUS bearings, low friction seals and lightweight lubricant to produce a bottom bracket with as little drag coefficient as possible. The bearings are held in place by forged and CNC machined aluminum cups that ride on the outside of the BB shell for greater durability. Compatible with cranks such as Shimano, Rhythm, Bombshell and other cranks that use a 24mm spindle size.

Features: 

  • Non-contact, titanium-coated SUS bearings
  • CNC machined aluminum cups 
  • External bottom bracket designed specifically for BMX racing 

Specifications:

Shell Width: 68mm / 73mm
Spindle Type: 24mm
Thread: 1.37" x 24 TPI
Weight: 100 g / 3.25 oz 

This product was added to our catalog on October 22, 2019