FOX IFP/QSR Rear Shock – Harley M8 Softail (2018 and Later)

Description

FOX IFP-QSR Rear Shock for Harley Softail MY20+

Experience ultimate comfort and control with the FOX IFP-QSR rear shock. Featuring an Internal Floating Piston (IFP) to separate nitrogen gas from the shock oil, this gas-charged mono-tube shock maintains consistent damping no matter how long you ride. The QSR 3-position quick-switch rebound gives three distinct settings—comfort for bumpy backroads, an “any road” balance of control and comfort, and a “glued to the asphalt” feel for smooth twisty roads—so you can quickly dial the ride to match conditions.

Designed and tuned specifically for Softail MY20+ models, the FOX IFP-QSR delivers improved ride quality, precise control, and long-term serviceability. Pair it with the FOX GRIP Street Performance Fork Cartridge Kit for Harley Softail to achieve the best possible balance of comfort and handling.

• Model-specific optimized ride tune
• QSR: 3-position quick switch rebound adjustment
• Spring preload setting guide marks
• Gas-charged mono-tube with Internal Floating Piston (IFP)
• 2-inch diameter 6061-T6 aluminum, Type III hard-anodized body
• Fully rebuildable and re-valvable
• Advanced high-flow, deflective disc velocity-sensitive damping
• 5/8-inch diameter, low-friction, super-finished hard chrome shaft
• Matte black spring and black-anodized preload ring
• Street Performance series — Standard spring rated for rider weight up to 240 lb

• Consistent damping control over long rides thanks to the IFP design
• Quick, on-the-fly rebound selection for different road surfaces and riding styles
• High-flow damping and low-friction shaft improve response and traction
• Fully rebuildable/re-valvable for tuning and long-term ownership

Upgrade your Softail MY20+ with the FOX IFP-QSR rear shock for superior comfort, control, and adjustability. Add to cart to transform your ride.

Fitment

• Harley-Davidson FLFB Fat Boy 107 (2018-2020)
• Harley-Davidson FLFBS Fat Boy 114 (2018-2024)
• Harley-Davidson FLSB Sport Glide 107 (2018-2021)
• Harley-Davidson FLSL Softail Slim 107 (2018-2021)
• Harley-Davidson FXBBS Street Bob 114 (2021-2024)
• Harley-Davidson FXBB Street Bob 107 (2018-2021)
• Harley-Davidson FXBR Breakout 107 (2018-2020)
• Harley-Davidson FXBR Breakout 117 (2023-2025)
• Harley-Davidson FXBRS Breakout 114 (2018-2022)
• Harley-Davidson FXDRS FXDR 114 (2019-2020)
• Harley-Davidson FXFB Fat Bob 107 (2018-2020)
• Harley-Davidson FXFBS Fat Bob 114 (2018-2023)
• Harley-Davidson FXLR Low Rider 107 (2018-2020)
• Harley-Davidson FXLRS Low Rider S 114 (2020-2021)
• Harley-Davidson FXLRST Low Rider ST 117 (2022-2025)
• Harley-Davidson FXST Softail Standard 107 (2020-2024)
• Harley-Davidson FLFB Fat Boy 117 (2025)
• Harley-Davidson FXBB Street Bob 117 (2025)
• Harley-Davidson FXLRS Low Rider S 117 (2025)

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