FSA Mega Exo ceramic bottom bracket review

Smooth but expensive and vulnerable BB

Our rating 
3.0 out of 5 star rating 3.0
GBP £159.99 RRP | USD $232.57
FSA Mega Exo Ceramic Bottom Bracket

Our review

Great when new, but these are silly-expensive, vulnerable to installation damage and don’t last
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FSA were one of the first companies to introduce ceramic bearings to cycling and their Mega Exo is certainly silky smooth when new.


However, the design is vulnerable to installation crush damage, particularly with FSA cranks. With no obvious stop point on the taper you need to be very careful and check repeatedly as you tighten to ensure it still spins smoothly. 


Even carefully installed ones don’t last as long as they should, with one sample dead and another dying after seven months.

Product Specifications


Name Mega Exo Ceramic MTB
Brand FSA

Weight (g) 150
Features Alloy center sleeve with double o-ring seals, External oversized ceramic cartridge bearings, Forged and CNC-machined external bearing cups, Finish: Anodized cups and sleeve
Material Alloy
Compatibility Fits: K-Force Light MTB
Thread size 1.370"x24tpi
Fits Shell Width 68/73mm