2016-17 Stumpjumpers require 1mm spacers

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PRO Seat Post Clamp - 31.8mm - Black PLP|Model Year 2016-17 Stumpjumpers require 1mm spacersQuality bolt up seat post clamps from PRO. Available in different sizes to suit different diameter seat tubes. If you're unsure of what size to get, check your existing clamp to see if the size is printed, or check your owner's manual search online. Note that the size of the seat post isn't an accurate indicator as the size of the seat tube itself can vary between brands models, depending on what type of material is used in the frame.