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TREK SERVICE INFORMATION August 2016
FSA MegaExo AL
These instructions and parts are for the aluminum FSA cranks only. The current “B” kit will
not work for FSA carbon cranks.
The Speed Concept uses a special bearing system that has no parts that thread into the
frame. Instead, the bearings are a slip-fit into the frame (Figure 11). This section explains
how to install the bearings and crankset.
The bearings might fit into the frame tightly. In this case, you might need to tap them with
a soft-faced mallet. However, Do not use a hammer to install the bearings into the frame. If
the bearing fit is too tight, make sure the bearings are clean and free of debris.
Tools And Materials Required
To complete the installation, you will also need the FSA instructions, available at:
http://www.road.fullspeedahead.com/downloadfly.aspx?download=downloads/
Install_MegaExoAlloy.pdf.
• Crankset and bearings (bearing shields come pressed onto the bearings)
• 5 mm Hex Wrench
• Rock “N” Roll Super Coat grease
• Bottom bracket parts
Figure 14.33. FSA bearing set
Bearing with shield pressed on
Part Description FSA
BB90 bearing kit “B”
293227
Bearing with shield pressed on
