FSA

Mega Exo 7100 Bottom Bracket Fat Bike English

What Our Gearhead® Experts Are Saying:

"I’ve used this fat bike version of the BB-7100 all winter in sub-zero temps and deep snow. It threads in solid, spins smoothly, and holds up great through salt, slush, and mud. Simple to install with no creaks, even with wide Q-factor cranks."

When cold-weather miles and rugged trail conditions are the norm, we trust the Full Speed Ahead BB-7100 MegaExo Bottom Bracket to keep our fat bike cranks turning smoothly. Designed for frames with BSA threading and wide bottom bracket shells, this version of the BB-7100 ensures a creak-free interface between frame and crank, whether we’re cruising frozen lakes or grinding out snowy singletrack.

Die-cast and CNC-machined alloy cups hold up to wet, corrosive winter conditions, while the sealed cartridge bearings reduce maintenance and protect against freeze-thaw grit. The adjustable composite center sleeve simplifies setup across a range of shell widths, making this bottom bracket a perfect fit for wide Q-factor MegaExo cranksets and fat bike builds.