FSA Mega Exo Bottom Bracket
Best durable upgrade for mountain bikers seeking reliable, smooth drivetrain performance.
This external bottom bracket offers a durable and smooth solution for mountain bikes equipped with MegaExo cranksets. Featuring sealed bearings and robust alloy construction, it ensures reliable performance on the trail. The adjustable center sleeve adds Di2 compatibility, making it a versatile choice for various setups.
$36.99
at
Hitchhiker Bike Shop
More MegaExo options
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FSA Premium MegaExo Bottom Bracket
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FSA Megaexo Omega Bottom Bracket
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FSA MegaExo Steel Mountain Bottom Bracket
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FSA Bottom Bracket
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Who it's for
- Mountain bikers riding in wet or muddy conditions
- Cyclists needing a direct replacement for stock FSA cranks
- Budget-conscious riders seeking reliable performance without premium pricing
Who should skip it
- High-mileage riders wanting longer intervals between bearing replacements
- Cyclists planning future upgrades to non-FSA cranksets
- Mechanics who prefer simple, creak-free installation processes
Performance breakdown
Durability
CNC-machined alloy cups provide a rock-solid foundation for aggressive trail riding.
Weather Resistance
High-quality seals effectively lock out grit and moisture on muddy trails.
Installation Ease
Standard BSA threading makes for a straightforward, familiar setup process.
Power Transfer
Rigid construction ensures your pedal strokes translate directly into forward motion.
Compatibility
Limited to 24mm spindles, but integrates perfectly with modern electronic shifting.
Bearing Smoothness
Reliable rotation that balances consistent performance with long-term trail utility.
Key Specs
Spindle Interface
MegaExo
Spindle Diameter
24mm
Shell Width
73mm
Bottom Bracket Standard
BSA Threaded
Material
Aluminum alloy cups, Composite center sleeve
Sealing Type
Sealed
Intended Use
Mountain Biking
Adjustable Chainline
Yes
Water Resistant
Yes
Ceramic Bearings
No
Know before you buy
Still have a question?
Ask Metto anything about the FSA Mega Exo Bottom Bracket before you decide.
