S&S Cycle 08-17 BT Improved Inner Primary Bearing Race

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