RockShox Maxle Stealth Thru-Axle FRONT 100 mm x 15 mm TREK W544135 READ SPECS
(Part W544135). for theRockShox Maxle Stealth Thru-Axle. version fits standard non-boost RockShox MTB forks like olderSID. fit Boost forks (which require 110mm spacing) or specialized RockShox RS-1 inverted forks.