Specialized Stumpjumper 15 Alloy Shock Link Description: This Specialized Stumpjumper 15 Alloy Shock Link allows users to outfit select Specialized Stumpjumper 15 dual suspension mountain bikes with a 27.5" rear wheel. This shock link is intended to alter rear wheel sizes from 29" to 27.5" while preserving frame geometry and kinematics for a ride that offers the acceleration, handling, and durability of using a 27.5" rear wheel without compromising ride quality or function. Features: Alloy shock link for select Specialized Stumpjumper frames Enables use of 27.5" wheels on Stumpjumper 15 frames Provides 145mm of travel Compatible with all frame sizes Includes pre-pressed sealed bearing set