The FOX IFP-QSR Preload Adjustable Shocks are designed for precise suspension tuning on select Harley Davidson models, offering riders enhanced control and comfort. Featuring a gas-charged mono-tube design with an internal floating piston, these shocks provide consistent damping performance under various riding conditions. The 1.5-inch diameter, 6061-T6 aluminum body is hard anodized with Type III finish, ensuring durability and corrosion resistance for long-term use. The shocks include a hand-adjustable spring preload, allowing riders to fine-tune suspension stiffness easily for different loads or riding styles.
The IFP-QSR version offers a 3-position adjustable rebound, giving riders greater control over shock behavior, while the standard IFP model provides a fixed rebound setting. Advanced high-flow, deflective disk, velocity-sensitive damping ensures smooth ride quality by responding precisely to terrain changes. These shocks are fully serviceable and rebuildable, making maintenance straightforward and cost-effective. The 1/2-inch low-friction, super-finished hard chrome shaft reduces stiction and enhances durability, ensuring consistent performance over time.
Available with a carbon black spring, these shocks come in standard or heavy-duty spring rates to accommodate riders up to 370 pounds, including Tri-Glide models. The standard length is 13 inches, with a low-profile 12-inch option for specific fitments. Designed specifically for models such as Harley Davidson FLHTCUL Electra Glide Ultra Classic Low, FLHTKL Electra Glide Ultra Limited Low, FLTRXS Road Glide Special, and Road King, these shocks provide a customizable suspension upgrade for serious riders seeking improved handling and comfort on the road.

Features:

• IFP-QSR version features a 3-position adjustable rebound for customizable ride control

• Standard IFP model does not include rebound adjustment

• Model-specific optimized ride tune for tailored performance

• Gas-charged mono-tube construction with internal floating piston for consistent damping

• 1.5-inch diameter, 6061-T6 aluminum body with Type III hard anodized finish for durability

• Fully serviceable and rebuildable design for long-term maintenance

• High-flow, deflective disk, velocity-sensitive damping for smooth ride quality

• Hand-adjustable spring preload for personalized suspension setup

• 1/2-inch low friction, super-finished hard chrome shaft reduces stiction and wear

• Carbon Black spring available in standard or heavy-duty rates for different rider weights

• Flexible length options include standard 13 inches or low 12 inches to fit various models

• Designed to fit multiple Harley Davidson models including Electra Glide Ultra Classic Low, Ultra Limited Low, Road Glide, and Road King

Fitment
Harley Davidson FLH Electra Glide 1984
Harley Davidson FLH Electra Glide 1985
Harley Davidson FLH Electra Glide 2021
Harley Davidson FLHC Softail Heritage Classic 2018
Harley Davidson FLHC Softail Heritage Classic 2019
Harley Davidson FLHC Softail Heritage Classic 2020
Harley Davidson FLHC Softail Heritage Classic 2021
Harley Davidson FLHCS Softail Heritage Classic 114 2018
Harley Davidson FLHCS Softail Heritage Classic 114 2019
Harley Davidson FLHCS Softail Heritage Classic 114 2020
Harley Davidson FLHCS Softail Heritage Classic 114 2021
Harley Davidson FLHCS Softail Heritage Classic 114 2022
Harley Davidson FLHCS Softail Heritage Classic 114 2023
Harley Davidson FLHCS Softail Heritage Classic 114 2024
Harley Davidson FLHFB Electra Glide Highway King 2023
Harley Davidson FLHR Road King 1994
Harley Davidson FLHR Road King 1995
Harley Davidson FLHR Road King 1996
Harley Davidson FLHR Road King 1997
Harley Davidson FLHR Road King 1998
Harley Davidson FLHR Road King 1999
Harley Davidson FLHR Road King 2002
Harley Davidson FLHR Road King 2005
Harley Davidson FLHR Road King 2006
Harley Davidson FLHR Road King 2007
Harley Davidson FLHR Road King 2008
Harley Davidson FLHR Road King 2010
Harley Davidson FLHR Road King 2011
Harley Davidson FLHR Road King 2012
Harley Davidson FLHR Road King 2013
Harley Davidson FLHR Road King 2014
Harley Davidson FLHR Road King 2015
Harley Davidson FLHR Road King 2017
Harley Davidson FLHR Road King 2018
Harley Davidson FLHR Road King 2019
Harley Davidson FLHR Road King 2020
Harley Davidson FLHR Road King 2021
Harley Davidson FLHR Road King 2022
Harley Davidson FLHRC Road King Classic 1998
Harley Davidson FLHRC Road King Classic 2000
Harley Davidson FLHRC Road King Classic 2001
Harley Davidson FLHRC Road King Classic 2003
Harley Davidson FLHRC Road King Classic 2004
Harley Davidson FLHRC Road King Classic 2006
Harley Davidson FLHRC Road King Classic 2008
Harley Davidson FLHRC Road King Classic 2013
Harley Davidson FLHRC Road King Classic 2014
Harley Davidson FLHRC Road King Classic 2017
Harley Davidson FLHRS Road King Custom 2004
Harley Davidson FLHRS Road King Custom 2005
Harley Davidson FLHRS Road King Custom 2006
Harley Davidson FLHRSE CVO Road King 2003
Harley Davidson FLHRSE CVO Road King 2008
Harley Davidson FLHRXS Road King Special 2017
Harley Davidson FLHRXS Road King Special 2018
Harley Davidson FLHRXS Road King Special 2019
Harley Davidson FLHRXS Road King Special 2020
Harley Davidson FLHRXS Road King Special 2021
Harley Davidson FLHRXS Road King Special 2022
Harley Davidson FLHRXS Road King Special 2023
Harley Davidson FLHRXS Road King Special 2024
Harley Davidson FLHS Electra Glide Sport 1984
Harley Davidson FLHS Electra Glide Sport 1987
Harley Davidson FLHS Electra Glide Sport 1988
Harley Davidson FLHS Electra Glide Sport 1989
Harley Davidson FLHS Electra Glide Sport 1990
Harley Davidson FLHS Electra Glide Sport 1991
Harley Davidson FLHS Electra Glide Sport 1993
Harley Davidson FLHT Electra Glide 1986
Harley Davidson FLHT Electra Glide 1987
Harley Davidson FLHT Electra Glide 1995
Harley Davidson FLHT Electra Glide 1999
Harley Davidson FLHT Electra Glide 2001
Harley Davidson FLHT Electra Glide 2003
Harley Davidson FLHT Electra Glide 2005
Harley Davidson FLHT Electra Glide 2006
Harley Davidson FLHT Electra Glide 2007
Harley Davidson FLHT Electra Glide 2008
Harley Davidson FLHT Electra Glide 2019
Harley Davidson FLHT Electra Glide 2020
Harley Davidson FLHT Electra Glide 2021
Harley Davidson FLHT Electra Glide 2022
Harley Davidson FLHTC Electra Glide Classic 1984
Harley Davidson FLHTC Electra Glide Classic 1985
Harley Davidson FLHTC Electra Glide Classic 1988
Harley Davidson FLHTC Electra Glide Classic 1990
Harley Davidson FLHTC Electra Glide Classic 1991
Harley Davidson FLHTC Electra Glide Classic 1992
Harley Davidson FLHTC Electra Glide Classic 1993
Harley Davidson FLHTC Electra Glide Classic 1996
Harley Davidson FLHTC Electra Glide Classic 1997
Harley Davidson FLHTC Electra Glide Classic 1998
Harley Davidson FLHTC Electra Glide Classic 1999
Harley Davidson FLHTC Electra Glide Classic 2001
Harley Davidson FLHTC Electra Glide Classic 2002
Harley Davidson FLHTC Electra Glide Classic 2009
Harley Davidson FLHTC Electra Glide Classic 2011
Harley Davidson FLHTC Electra Glide Classic 2012
Harley Davidson FLHTCSE CVO Electra Glide 2004
Harley Davidson FLHTCSE CVO Electra Glide 2005
Harley Davidson FLHTCU Electra Glide Ultra Classic 1989
Harley Davidson FLHTCU Electra Glide Ultra Classic 1991
Harley Davidson FLHTCU Electra Glide Ultra Classic 1992
Harley Davidson FLHTCU Electra Glide Ultra Classic 1994
Harley Davidson FLHTCU Electra Glide Ultra Classic 1995
Harley Davidson FLHTCU Electra Glide Ultra Classic 1996
Harley Davidson FLHTCU Electra Glide Ultra Classic 1998
Harley Davidson FLHTCU Electra Glide Ultra Classic 1999
Harley Davidson FLHTCU Electra Glide Ultra Classic 2000
Harley Davidson FLHTCU Electra Glide Ultra Classic 2001
Harley Davidson FLHTCU Electra Glide Ultra Classic 2002
Harley Davidson FLHTCU Electra Glide Ultra Classic 2003
Harley Davidson FLHTCU Electra Glide Ultra Classic 2005
Harley Davidson FLHTCU Electra Glide Ultra Classic 2006
Harley Davidson FLHTCU Electra Glide Ultra Classic 2007
Harley Davidson FLHTCU Electra Glide Ultra Classic 2009
Harley Davidson FLHTCU Electra Glide Ultra Classic 2012
Harley Davidson FLHTCU Electra Glide Ultra Classic 2013
Harley Davidson FLHTCU Electra Glide Ultra Classic 2014
Harley Davidson FLHTCU Electra Glide Ultra Classic 2015
Harley Davidson FLHTCU Electra Glide Ultra Classic 2016
Harley Davidson FLHTCU Electra Glide Ultra Classic 2017
Harley Davidson FLHTCU Electra Glide Ultra Classic 2018
Harley Davidson FLHTCU Electra Glide Ultra Classic 2019
Harley Davidson FLHTCUL Electra Glide Ultra Classic Low 2015
Harley Davidson FLHTCUL Electra Glide Ultra Classic Low 2016
Harley Davidson FLHTCUSE CVO Electra Glide Ultra Classic 2006
Harley Davidson FLHTCUSE CVO Electra Glide Ultra Classic 2007
Harley Davidson FLHTCUSE CVO Electra Glide Ultra Classic 2008
Harley Davidson FLHTCUSE CVO Electra Glide Ultra Classic 2009
Harley Davidson FLHTCUSE CVO Electra Glide Ultra Classic 2010
Harley Davidson FLHTCUSE CVO Electra Glide Ultra Classic 2011
Harley Davidson FLHTCUSE CVO Electra Glide Ultra Classic 2012
Harley Davidson FLHTK Electra Glide Ultra Limited 2010
Harley Davidson FLHTK Electra Glide Ultra Limited 2011
Harley Davidson FLHTK Electra Glide Ultra Limited 2013
Harley Davidson FLHTK Electra Glide Ultra Limited 2014
Harley Davidson FLHTK Electra Glide Ultra Limited 2015
Harley Davidson FLHTK Electra Glide Ultra Limited 2018
Harley Davidson FLHTK Electra Glide Ultra Limited 2019
Harley Davidson FLHTK Electra Glide Ultra Limited 2020
Harley Davidson FLHTK Electra Glide Ultra Limited 2021
Harley Davidson FLHTK Electra Glide Ultra Limited 2022
Harley Davidson FLHTK Electra Glide Ultra Limited 2023
Harley Davidson FLHTK Electra Glide Ultra Limited 2024
Harley Davidson FLHTKL Electra Glide Ultra Limited Low 2015
Harley Davidson FLHTKL Electra Glide Ultra Limited Low 2016
Harley Davidson FLHTKL Electra Glide Ultra Limited Low 2017
Harley Davidson FLHTKL Electra Glide Ultra Limited Low 2018
Harley Davidson FLHTKL Electra Glide Ultra Limited Low 2019
Harley Davidson FLHTKSE CVO Limited 2015
Harley Davidson FLHTKSE CVO Limited 2016
Harley Davidson FLHTKSE CVO Limited 2018
Harley Davidson FLHTKSE CVO Limited 2019
Harley Davidson FLHTKSE CVO Limited 2020
Harley Davidson FLHTKSE CVO Limited 2021
Harley Davidson FLHX Electra Glide Special 1984
Harley Davidson FLHX Electra Glide Special 1985
Harley Davidson FLHX Street Glide 2006
Harley Davidson FLHX Street Glide 2007
Harley Davidson FLHX Street Glide 2008
Harley Davidson FLHX Street Glide 2009
Harley Davidson FLHX Street Glide 2010
Harley Davidson FLHX Street Glide 2011
Harley Davidson FLHX Street Glide 2012
Harley Davidson FLHX Street Glide 2013
Harley Davidson FLHX Street Glide 2014
Harley Davidson FLHX Street Glide 2015
Harley Davidson FLHX Street Glide 2016
Harley Davidson FLHX Street Glide 2018
Harley Davidson FLHX Street Glide 2019
Harley Davidson FLHX Street Glide 2020
Harley Davidson FLHX Street Glide 2021
Harley Davidson FLHX Street Glide 2022
Harley Davidson FLHX Street Glide 2023
Harley Davidson FLHX Street Glide 2024
Harley Davidson FLHXS Street Glide Special 2014
Harley Davidson FLHXS Street Glide Special 2015
Harley Davidson FLHXS Street Glide Special 2017
Harley Davidson FLHXS Street Glide Special 2018
Harley Davidson FLHXS Street Glide Special 2019
Harley Davidson FLHXS Street Glide Special 2020
Harley Davidson FLHXS Street Glide Special 2021
Harley Davidson FLHXS Street Glide Special 2022
Harley Davidson FLHXS Street Glide Special 2023
Harley Davidson FLHXSE CVO Street Glide 2010
Harley Davidson FLHXSE CVO Street Glide 2011
Harley Davidson FLHXSE CVO Street Glide 2012
Harley Davidson FLHXSE CVO Street Glide 2016
Harley Davidson FLHXSE CVO Street Glide 2017
Harley Davidson FLHXSE CVO Street Glide 2018
Harley Davidson FLHXSE CVO Street Glide 2019
Harley Davidson FLHXSE CVO Street Glide 2020
Harley Davidson FLHXSE CVO Street Glide 2021
Harley Davidson FLHXSE CVO Street Glide 2022
Harley Davidson FLHXSE CVO Street Glide 2023
Harley Davidson FLHXSE CVO Street Glide 2024
Harley Davidson FLHXST Street Glide ST 2022
Harley Davidson FLTC Tour Glide Classic 1984
Harley Davidson FLTC Tour Glide Classic 1985
Harley Davidson FLTC Tour Glide Classic 1986
Harley Davidson FLTC Tour Glide Classic 1988
Harley Davidson FLTC Tour Glide Classic 1990
Harley Davidson FLTC Tour Glide Classic 1991
Harley Davidson FLTC Tour Glide Classic 1992
Harley Davidson FLTCU Ultra Classic Tour Glide 1990
Harley Davidson FLTCU Ultra Classic Tour Glide 1992
Harley Davidson FLTCU Ultra Classic Tour Glide 1995
Harley Davidson FLTCU Ultra Classic Tour Glide 1996
Harley Davidson FLTR Road Glide 1998
Harley Davidson FLTR Road Glide 2000
Harley Davidson FLTR Road Glide 2002
Harley Davidson FLTR Road Glide 2005
Harley Davidson FLTR Road Glide 2007
Harley Davidson FLTR Road Glide 2008
Harley Davidson FLTR Road Glide 2009
Harley Davidson FLTR Road Glide 2016
Harley Davidson FLTR Road Glide 2018
Harley Davidson FLTR Road Glide 2019
Harley Davidson FLTR Road Glide 2020
Harley Davidson FLTRK Road Glide Limited 2020
Harley Davidson FLTRK Road Glide Limited 2021
Harley Davidson FLTRK Road Glide Limited 2022
Harley Davidson FLTRKSE CVO Road Glide Limited 2022
Harley Davidson FLTRSE CVO Road Glide 2001
Harley Davidson FLTRSE CVO Road Glide 2009
Harley Davidson FLTRU Road Glide Ultra 2011
Harley Davidson FLTRU Road Glide Ultra 2012
Harley Davidson FLTRU Road Glide Ultra 2016
Harley Davidson FLTRU Road Glide Ultra 2017
Harley Davidson FLTRU Road Glide Ultra 2018
Harley Davidson FLTRU Road Glide Ultra 2019
Harley Davidson FLTRUSE CVO Road Glide Ultra 2011
Harley Davidson FLTRUSE CVO Road Glide Ultra 2015
Harley Davidson FLTRUSE CVO Road Glide Ultra 2016
Harley Davidson FLTRX Road Glide Custom 2012
Harley Davidson FLTRX Road Glide Custom 2013
Harley Davidson FLTRX Road Glide Custom 2015
Harley Davidson FLTRX Road Glide Custom 2020
Harley Davidson FLTRX Road Glide Custom 2021
Harley Davidson FLTRX Road Glide Custom 2022
Harley Davidson FLTRXS Road Glide Special 2015
Harley Davidson FLTRXS Road Glide Special 2016
Harley Davidson FLTRXS Road Glide Special 2017
Harley Davidson FLTRXS Road Glide Special 2018
Harley Davidson FLTRXS Road Glide Special 2019
Harley Davidson FLTRXS Road Glide Special 2020
Harley Davidson FLTRXS Road Glide Special 2021
Harley Davidson FLTRXS Road Glide Special 2022
Harley Davidson FLTRXSE CVO Road Glide 2018
Harley Davidson FLTRXSE CVO Road Glide 2019
Harley Davidson FLTRXSE CVO Road Glide 2020
Harley Davidson FLTRXSE CVO Road Glide 2021
Harley Davidson FLTRXSE CVO Road Glide 2022
Harley Davidson FLTRXSE CVO Road Glide Custom 2013
Harley Davidson FLTRXST Road Glide ST 2022
Harley-Davidson FLHR Road King 2000
Harley-Davidson FLHR Road King 2001
Harley-Davidson FLHR Road King 2003
Harley-Davidson FLHR Road King 2004
Harley-Davidson FLHR Road King 2009
Harley-Davidson FLHR Road King 2016
Harley-Davidson FLHRC Road King Classic 1999
Harley-Davidson FLHRC Road King Classic 2002
Harley-Davidson FLHRC Road King Classic 2005
Harley-Davidson FLHRC Road King Classic 2007
Harley-Davidson FLHRC Road King Classic 2009
Harley-Davidson FLHRC Road King Classic 2010
Harley-Davidson FLHRC Road King Classic 2011
Harley-Davidson FLHRC Road King Classic 2012
Harley-Davidson FLHRS Road King Custom 2007
Harley-Davidson FLHRSE CVO Road King 2002
Harley-Davidson FLHRSE CVO Road King 2007
Harley-Davidson FLHRSE CVO Road King 2013
Harley-Davidson FLHRSE CVO Road King 2014
Harley-Davidson FLHS Electra Glide Sport 1992
Harley-Davidson FLHT Electra Glide 1996
Harley-Davidson FLHT Electra Glide 1997
Harley-Davidson FLHT Electra Glide 1998
Harley-Davidson FLHT Electra Glide 2000
Harley-Davidson FLHT Electra Glide 2002
Harley-Davidson FLHT Electra Glide 2004
Harley-Davidson FLHT Electra Glide 2009
Harley-Davidson FLHTC Electra Glide Classic 1986
Harley-Davidson FLHTC Electra Glide Classic 1987
Harley-Davidson FLHTC Electra Glide Classic 1989
Harley-Davidson FLHTC Electra Glide Classic 1994
Harley-Davidson FLHTC Electra Glide Classic 1995
Harley-Davidson FLHTC Electra Glide Classic 2000
Harley-Davidson FLHTC Electra Glide Classic 2003
Harley-Davidson FLHTC Electra Glide Classic 2004
Harley-Davidson FLHTC Electra Glide Classic 2005
Harley-Davidson FLHTC Electra Glide Classic 2006
Harley-Davidson FLHTC Electra Glide Classic 2007
Harley-Davidson FLHTC Electra Glide Classic 2008
Harley-Davidson FLHTC Electra Glide Classic 2010
Harley-Davidson FLHTC Electra Glide Classic 2013
Harley-Davidson FLHTCU Electra Glide Ultra Classic 1990
Harley-Davidson FLHTCU Electra Glide Ultra Classic 1993
Harley-Davidson FLHTCU Electra Glide Ultra Classic 1997
Harley-Davidson FLHTCU Electra Glide Ultra Classic 2004
Harley-Davidson FLHTCU Electra Glide Ultra Classic 2008
Harley-Davidson FLHTCU Electra Glide Ultra Classic 2010
Harley-Davidson FLHTCU Electra Glide Ultra Classic 2011
Harley-Davidson FLHTCUSE CVO Electra Glide Ultra Classic 2013
Harley-Davidson FLHTK Electra Glide Ultra Limited 2012
Harley-Davidson FLHTK Electra Glide Ultra Limited 2016
Harley-Davidson FLHTK Electra Glide Ultra Limited 2017
Harley-Davidson FLHTKSE CVO Limited 2014
Harley-Davidson FLHTKSE CVO Limited 2017
Harley-Davidson FLHX Street Glide 2017
Harley-Davidson FLHXS Street Glide Special 2016
Harley-Davidson FLHXSE CVO Street Glide 2015
Harley-Davidson FLTC Tour Glide Classic 1987
Harley-Davidson FLTC Tour Glide Classic 1989
Harley-Davidson FLTC Tour Glide Classic 1993
Harley-Davidson FLTCU Ultra Classic Tour Glide 1989
Harley-Davidson FLTCU Ultra Classic Tour Glide 1991
Harley-Davidson FLTCU Ultra Classic Tour Glide 1993
Harley-Davidson FLTCU Ultra Classic Tour Glide 1994
Harley-Davidson FLTR Road Glide 1999
Harley-Davidson FLTR Road Glide 2001
Harley-Davidson FLTR Road Glide 2003
Harley-Davidson FLTR Road Glide 2004
Harley-Davidson FLTR Road Glide 2006
Harley-Davidson FLTR Road Glide 2015
Harley-Davidson FLTR Road Glide 2017
Harley-Davidson FLTRU Road Glide Ultra 2013
Harley-Davidson FLTRX Road Glide Custom 2010
Harley-Davidson FLTRX Road Glide Custom 2011