Fitment:Fit For 2007-2016 Big Twin (Including 06 Dyna)Features: Automatically adjust the tension of the primary chain Provide constant and even tension, which improves gear shifting Reduce shifting noise; makes for a smoother ride Extend primary chain lifePackage Included:As The Pictures Show PartsFitment List:2011 – 2013 Blackline – FXS2013 – 2017 Breakout (EFI) FXSB2008 – 2011 Cross Bones (EFI) – FLSTSB2007 – 2017 Deluxe (EFI) – FLSTN2007 Deuce (EFI) – FXSTD2008 – 2017 Dyna Fat Bob (EFI) – FXDF2007 – 2009 Dyna Low Rider (EFI) – FXDL2014 Dyna Low Rider (EFI) – FXDL2015 – 2017 Dyna Low Rider (EFI) -FXDL2016 – 2017 Dyna Low Rider Sport – FXDLS2007 – 2017 Dyna (EFI) – FXDB2007 – 2010 Dyna Super Glide (EFI) – FXD2007 – 2014 Dyna Super Glide Custom (EFI) – FXDC2012 – 2016 Dyna Switchback – FLD2007 – 2008 Dyna Wide Glide (EFI) – FXDWG2010 – 2017 Dyna Wide Glide (EFI) – FXDWG2007 – 2013 Electra Glide Classic (EFI) – FLHTC2007 – 2009 Electra Glide Standard (EFI) – FLHT2007 – 2016 Electra Glide Ultra Classic (EFI) – FLHTCU2015 – 2016 Electra Glide Ultra Classic Low-FLHTCUL2010 – 2016 Electra Glide Ultra Limited – FLHTK2007 – 2017 FLSTF2010 – 2016 FLSTFB2016 – 2017 FLSTFBS2012 – 2017 FLS Slim2015 – 2016 Freewheeler-FLRT2007 – 2017 Heritage Classic (EFI) – FLSTC2007 – 2009 Road Glide (EFI) – FLTR2010 – 2013 Road Glide Custom – FLTRX2015 – 2016 Road Glide Custom – FLTRX2015 – 2016 Road Glide Special-FLTRXS2011 – 2013 Road Glide Ultra – FLTRU2016 Road Glide Ultra – FLTRU2007 – 2016 Road King (EFI) – FLHR2007 – 2013 Road King Classic (EFI) – FLHRC2007 Road King Custom (EFI) – FLHRS2008 – 2009 Rocker (EFI) – FXCW2008 – 2011 Rocker C (EFI) – FXCWC2007 – 2010 Softail Custom (EFI) – FXSTC2007 – 2009 Softail Night Train (EFI) – FXSTB2016 – 2017 Softail Slim S – FLSS2007 Softail Springer Classic (EFI) – FLSTSC2007 Softail Standard (EFI) – FXST2007 – 2016 Street Glide (EFI) – FLHX2014 – 2016 Street Glide Special – FLHXS2010 – 2011 Street Glide Trike – FLHXXX2009 – 2016 Tri Glide Ultra Classic – FLHTCUTG2015 – 2016 Ultra Limited Low-FLHTKL