- Designed for its specific application, taking into account several critical parameters including; cam profiles, harmonics, natural frequency of the springs, valvetrain mass, required pressure, wire stress, fatigue life, and engine rpm
- Progressively wound springs using Kobe super-clean, chromium silicon(CrSi) based wire that is heat treated and shot peened
- Complete set for one engine
- Made in the USA
- Spring Lift 0.650"
Kit Includes:
- 4x CrSi Valve Springs
- 4x Titanium Retainers
- 4x H.T. Steel Basewashers
- 4x H.T Steel Keepers (pairs)
- 4x Vinton Seals
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2004-2010 | Buell | Firebolt XB12R | |
| 2003-2007 | Buell | Firebolt XB9R | |
| 2003 | Buell | Lightning CityX XB9SX | |
| 2005-2010 | Buell | Lightning CityX XB9SX | |
| 2007-2010 | Buell | Lightning Long XB12Ss | |
| 2004 | Buell | Lightning Low XB9SL | |
| 2007-2008 | Buell | Lightning Super TT XB12STT | |
| 2004-2008 | Buell | Lightning XB12S | |
| 2005-2010 | Buell | Lightning XB12Scg | |
| 2003-2004 | Buell | Lightning XB9S | |
| 2009-2010 | Buell | Ulysses Police XB12XP | |
| 2008-2010 | Buell | Ulysses Touring XB12XT | |
| 2006-2010 | Buell | Ulysses XB12X | |
| 2008-2011 | Harley-Davidson | Cross Bones FLSTSB | |
| 2008-2017 | Harley-Davidson | Dyna Fat Bob FXDF | |
| 2005-2006 | Harley-Davidson | Dyna Low Rider EFI FXDLI | |
| 2005 | Harley-Davidson | Dyna Low Rider FXDL | |
| 2007-2009 | Harley-Davidson | Dyna Low Rider FXDL | |
| 2014-2017 | Harley-Davidson | Dyna Low Rider FXDL | |
| 2016-2017 | Harley-Davidson | Dyna Low Rider FXDLS | |
| 2006 | Harley-Davidson | Dyna Street Bob EFI FXDBI | |
| 2007-2017 | Harley-Davidson | Dyna Street Bob FXDB | |
| 2006 | Harley-Davidson | Dyna Super Glide 35th Anniversary FXD | |
| 2005-2006 | Harley-Davidson | Dyna Super Glide Custom EFI FXDCI | |
| 2005 | Harley-Davidson | Dyna Super Glide Custom FXDC | |
| 2007-2014 | Harley-Davidson | Dyna Super Glide Custom FXDC | |
| 2005-2006 | Harley-Davidson | Dyna Super Glide EFI FXDI | |
| 2005 | Harley-Davidson | Dyna Super Glide FXD | |
| 2007-2010 | Harley-Davidson | Dyna Super Glide FXD | |
| 2005 | Harley-Davidson | Dyna Super Glide Sport EFI FXDXI | |
| 2005 | Harley-Davidson | Dyna Super Glide Sport FXDX | |
| 2005-2006 | Harley-Davidson | Dyna Wide Glide EFI FXDWGI | |
| 2005 | Harley-Davidson | Dyna Wide Glide FXDWG | |
| 2007-2008 | Harley-Davidson | Dyna Wide Glide FXDWG | |
| 2010-2017 | Harley-Davidson | Dyna Wide Glide FXDWG | |
| 2005-2006 | Harley-Davidson | Electra Glide Classic EFI FLHTCI | |
| 2005 | Harley-Davidson | Electra Glide Classic FLHTC | |
| 2007-2013 | Harley-Davidson | Electra Glide Classic FLHTC | |
| 2005-2006 | Harley-Davidson | Electra Glide EFI FLHTI | |
| 2005-2009 | Harley-Davidson | Electra Glide FLHT | |
| 2015-2016 | Harley-Davidson | Electra Glide Low Ultra Classic FLHTCUL | |
| 2015 | Harley-Davidson | Electra Glide Low Ultra Limited FLHTKL | |
| 2005-2006 | Harley-Davidson | Electra Glide Ultra Classic EFI FLHTCUI | |
| 2007-2017 | Harley-Davidson | Electra Glide Ultra Classic FLHTCU | |
| 2010-2015 | Harley-Davidson | Electra Glide Ultra Limited FLHTK | |
| 2005-2006 | Harley-Davidson | Fat Boy EFI FLSTFI | |
| 2005-2011 | Harley-Davidson | Fat Boy FLSTF | |
| 2010-2011 | Harley-Davidson | Fat Boy Lo FLSTFB | |
| 2010-2021 | Harley-Davidson | Forty Eight XL1200X | |
| 2018-2019 | Harley-Davidson | Forty Eight XL1200XS Special | |
| 2005-2006 | Harley-Davidson | Heritage Softail Classic EFI FLSTCI | |
| 2005-2011 | Harley-Davidson | Heritage Softail Classic FLSTC | |
| 2006 | Harley-Davidson | Heritage Softail EFI FLSTI | |
| 2006 | Harley-Davidson | Heritage Softail FLST | |
| 2018-2021 | Harley-Davidson | Iron 1200 XL1200NS | |
| 2009-2021 | Harley-Davidson | Iron 883 XL883N | |
| 2005-2006 | Harley-Davidson | Night Train EFI FXSTBI | |
| 2005-2009 | Harley-Davidson | Night Train FXSTB | |
| 2010-2013 | Harley-Davidson | Road Glide Custom FLTRX | |
| 2005-2006 | Harley-Davidson | Road Glide EFI FLTRI | |
| 2007-2009 | Harley-Davidson | Road Glide FLTR | |
| 2015-2017 | Harley-Davidson | Road Glide FLTRX | |
| 2015-2017 | Harley-Davidson | Road Glide Special FLTRXS | |
| 2011-2013 | Harley-Davidson | Road Glide Ultra FLTRU | |
| 2016-2017 | Harley-Davidson | Road Glide Ultra FLTRU | |
| 2005-2006 | Harley-Davidson | Road King Classic EFI FLHRCI | |
| 2007-2013 | Harley-Davidson | Road King Classic FLHRC | |
| 2005-2006 | Harley-Davidson | Road King Custom EFI FLHRSI | |
| 2005-2007 | Harley-Davidson | Road King Custom FLHRS | |
| 2005-2006 | Harley-Davidson | Road King EFI FLHRI | |
| 2005-2017 | Harley-Davidson | Road King FLHR | |
| 2017 | Harley-Davidson | Road King Special FLHRXS | |
| 2016-2020 | Harley-Davidson | Roadster XL1200CX | |
| 2012-2016 | Harley-Davidson | Seventy Two XL1200V | |
| 2007-2010 | Harley-Davidson | Softail Custom FXSTC | |
| 2005-2006 | Harley-Davidson | Softail Deluxe EFI FLSTNI | |
| 2005-2011 | Harley-Davidson | Softail Deluxe FLSTN | |
| 2005-2006 | Harley-Davidson | Softail Deuce EFI FXSTDI | |
| 2005-2007 | Harley-Davidson | Softail Deuce FXSTD | |
| 2005-2006 | Harley-Davidson | Softail Springer Classic EFI FLSTSCI | |
| 2005-2007 | Harley-Davidson | Softail Springer Classic FLSTSC | |
| 2005-2006 | Harley-Davidson | Softail Springer EFI FXSTSI | |
| 2005-2006 | Harley-Davidson | Softail Springer FXSTS | |
| 2005-2006 | Harley-Davidson | Softail Standard EFI FXSTI | |
| 2005-2007 | Harley-Davidson | Softail Standard FXST | |
| 2007 | Harley-Davidson | Sportster 1200 50th Anniversary XL50 | |
| 2014-2017 | Harley-Davidson | Sportster 1200 Super Low XL1200T | |
| 2009-2010 | Harley-Davidson | Sportster 1200 XR1200 | |
| 2011-2012 | Harley-Davidson | Sportster 1200 XR1200X | |
| 2011-2019 | Harley-Davidson | Sportster 883 Super Low XL883L | |
| 2016-2017 | Harley-Davidson | Ultra Limited FLHTK | |
| 2016-2017 | Harley-Davidson | Ultra Limited Low FLHTKL | |