Ascent Revolution Bottom Brackets - BSA EVOCSALE use supplied wrench to tighten

use supplied wrench to tighten and screw in the tool

A unique detachable strap system offers quick

balancing aerodynamic performance

a low-friction layer solution designed to reduce rotational forces transferred to the brain

Ascent Revolution Bottom Brackets - BSA EVOCSALE use supplied wrench to tightenETA:: 1 2 Weeks The Revolution BSA BB provides the ultimate in threaded bottom bracket performance. A precision machined custom two piece full Aluminum 6061 T6 shell fits snugly together while being threaded in, enforcing the alignment between the two halves for impeccable smoothness. We use top grade NTN 6805 LLB precision steel bearings for durability, reliability, and smoothness. Each bearing can be removed and replaced using standard bearing