The tendency of the stock inner primary bearing race on late model big twins to shift on the transmission mainshaft under high torque loads, also known as “walking” of the race, can cause destruction of the transmission mainshaft seal, and ultimately the mainshaft seal, output gear and output gear bearing. The S&S inner primary bearing race features an extra step on the inside diameter that acts as a stop on the transmission mainshaft. When the race is pressed on to the shaft, the step will not allow the race to move inward toward the mainshaft seal. The improved S&S bearing race is a must for any high performance application.

This Part Fits:

Year Make Model Submodel 2008-2021 Harley-Davidson FLHR Road King Base 2008-2013 Harley-Davidson FLHRC Road King Classic Base 2008-2009,2019-2021 Harley-Davidson FLHT Electra Glide Standard Base 2008-2013 Harley-Davidson FLHTC Electra Glide Classic Base 2008-2019 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base 2009-2013 Harley-Davidson FLHTCUTG Tri Glide Ultra Classic Base 2015-2019 Harley-Davidson FLHTKL Ultra Limited Low Base 2014-2021 Harley-Davidson FLHTKSE CVO Limited Base 2008-2021 Harley-Davidson FLHX Street Glide Base 2014-2021 Harley-Davidson FLHXS Street Glide Special Base 2010,2015-2021 Harley-Davidson FLHXSE CVO Street Glide Base 2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base 2012-2017 Harley-Davidson FLS Softail Slim Base 2016-2017 Harley-Davidson FLSS Softail Slim S Base 2008-2017 Harley-Davidson FLSTC Heritage Softail Classic Base 2008-2017 Harley-Davidson FLSTF Fat Boy Base 2010-2017 Harley-Davidson FLSTFB Fat Boy Lo Base 2016-2017 Harley-Davidson FLSTFBS Fat Boy S Base 2008-2011 Harley-Davidson FLSTSB Cross Bones Base 2010 Harley-Davidson FLSTSE CVO Softail Convertible Base 2008-2010 Harley-Davidson FXD Dyna Super Glide Base 2008-2009,2014-2017 Harley-Davidson FXDL Dyna Low Rider Base 2008,2010-2017 Harley-Davidson FXDWG Dyna Wide Glide Base 2008-2009 Harley-Davidson FXSTB Night Train Base 2008-2010 Harley-Davidson FXSTC Softail Custom Base 2009 Harley-Davidson FXSTSSE3 CVO Softail Springer Base