Eagle Transmission features a SRAM MTB WIDE crank with 55mm chain line while using the Boost 148mm Over-Locknut Dimension hub standard. This is made possible by the frame adjustments implemented with UDH to allow for more clearance around suspension bearings, tires, and chain stays. Eagle transmission cassettes move outboard by 2.5mm to optimize for this wider, 55mm chain line.
For bikes with SuperBoost 157mm hubs, a 55mm chain line crank can be used.
For bikes with a 142mm hub spacing, a 52mm chain line crank must be used.
If you need help finding the correct BB and Spindle spacers for your bike, see this link to the SRAM DUB BB Chart.
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