Upgrade the suspension performance of your 2018 Harley-Davidson M8 Softail with FOX IFP-QSR rear shocks. Designed for model-specific fitment, these gas-charged monotube shocks use an internal floating piston and optimized ride tuning to provide controlled, consistent damping. The IFP-QSR version includes a three-position adjustable rebound system, allowing riders to fine-tune suspension response for changing road conditions and riding preferences.
Each shock features a 1.5-inch 6061-T6 aluminum body with a Type III hard-anodized finish, advanced high-flow deflective-disc velocity-sensitive damping, and a hand-adjustable spring preload. A low-friction, super-finished hard-chrome shaft supports smooth suspension movement, while the Carbon Black spring is available in standard, heavy-duty, or super-heavy-duty rates. The standard spring rate is intended for riders up to 240 pounds; heavier-duty options are available for riders over 240 pounds, up to 370 pounds, and Tri-Glide applications.
FOX Part Number: 897-27-309. Manufacturer: FOX. Vendor Part Number: 897-27-309. This serviceable and rebuildable shock set is available in a standard 13-inch length and is designed for the listed 2018 Harley-Davidson Softail applications, including the FXBB Softail Street Bob, FXFB Softail Fat Bob, FXLR Softail Low Rider, FLSB Softail Sport Glide, FLHC and FLHCS Softail Heritage Classic, FLSL Softail Slim, FXFBS Softail Fat Bob 114, FXBR Softail Breakout, and FXBRS Softail Breakout 114. Verify model, length, and spring-rate requirements before installation.
Features:
- IFP-QSR design with three-position adjustable rebound
- Model-specific optimized ride tune for 2018 Harley-Davidson M8 Softail motorcycles
- Gas-charged monotube construction with internal floating piston
- 1.5-inch 6061-T6 aluminum body with Type III hard-anodized finish
- Fully serviceable and rebuildable design
- Advanced high-flow deflective-disc, velocity-sensitive damping
- Hand-adjustable spring preload
- Low-friction, super-finished hard-chrome shaft
- Carbon Black spring with standard, heavy-duty, and super-heavy-duty rate options
- Standard spring rate for riders up to 240 pounds
- Heavy-duty spring rate for riders over 240 pounds
- Super-heavy-duty spring rate for riders up to 370 pounds and Tri-Glide models
- Standard 13-inch shock length
- Fits select 2018 Harley-Davidson FXBB, FXFB, FXLR, FLSB, FLHC, FLHCS, FLSL, FXFBS, FXBR, and FXBRS Softail models
- Brand: FOX
- Manufacturer and vendor part number: 897-27-309
Fitment:
2018 Harley Davidson FLDE Softail Deluxe
2018 Harley Davidson FLFB Softail Fat Boy
2018 Harley Davidson FLFBS Softail Fat Boy 114
2018 Harley Davidson FLHC Softail Heritage Classic
2018 Harley Davidson FLHCS Softail Heritage Classic 114
2018 Harley Davidson FLSB Softail Sport Glide
2018 Harley Davidson FLSL Softail Slim
2018 Harley Davidson FXBB Softail Street Bob
2018 Harley Davidson FXBR Softail Breakout
2018 Harley Davidson FXBRS Softail Breakout 114
2018 Harley Davidson FXFB Softail Fat Bob
2018 Harley Davidson FXFBS Softail Fat Bob 114
2018 Harley Davidson FXLR Softail Low Rider
2019 Harley Davidson FLDE Softail Deluxe
2019 Harley Davidson FLFB Softail Fat Boy
2019 Harley Davidson FLFBS Softail Fat Boy 114
2019 Harley Davidson FLHC Softail Heritage Classic
2019 Harley Davidson FLHCS Softail Heritage Classic 114
2019 Harley Davidson FLSB Softail Sport Glide
2019 Harley Davidson FLSL Softail Slim
2019 Harley Davidson FXBB Softail Street Bob
2019 Harley Davidson FXBR Softail Breakout
2019 Harley Davidson FXBRS Softail Breakout 114
2019 Harley Davidson FXDR Softail Power Cruiser
2019 Harley Davidson FXDRS Softail FXDR 114
2019 Harley Davidson FXFB Softail Fat Bob
2019 Harley Davidson FXFBS Softail Fat Bob 114
2019 Harley Davidson FXLR Softail Low Rider
2020 Harley Davidson FLDE Softail Deluxe
2020 Harley Davidson FLFB Softail Fat Boy
2020 Harley Davidson FLFBS Softail Fat Boy 114
2020 Harley Davidson FLHC Softail Heritage Classic
2020 Harley Davidson FLHCS Softail Heritage Classic 114
2020 Harley Davidson FLSB Softail Sport Glide
2020 Harley Davidson FLSL Softail Slim
2020 Harley Davidson FXBB Softail Street Bob
2020 Harley Davidson FXBRS Softail Breakout 114
2020 Harley Davidson FXDRS Softail FXDR 114
2020 Harley Davidson FXFBS Softail Fat Bob 114
2020 Harley Davidson FXLR Softail Low Rider
2020 Harley Davidson FXLRS Softail Low Rider S
2021 Harley Davidson FLFBS Softail Fat Boy 114
2021 Harley Davidson FLHC Softail Heritage Classic
2021 Harley Davidson FLHCS Softail Heritage Classic 114
2021 Harley Davidson FLSB Softail Sport Glide
2021 Harley Davidson FLSL Softail Slim
2021 Harley Davidson FXBB Softail Street Bob
2021 Harley Davidson FXFBS Softail Fat Bob 114
2021 Harley Davidson FXLR Softail Low Rider
2021 Harley Davidson FXLRS Softail Low Rider S
2022 Harley Davidson FLFBS Softail Fat Boy 114
2022 Harley Davidson FLHCS Softail Heritage Classic 114
2022 Harley Davidson FXBB Softail Street Bob
2022 Harley Davidson FXBBS Softail Street Bob 114
2022 Harley Davidson FXFBS Softail Fat Bob 114
2022 Harley Davidson FXLRS Softail Low Rider S
2022 Harley Davidson FXLRST Softail Low Rider ST
2022 Harley Davidson FXST Softail
2023 Harley Davidson FLFBS Softail Fat Boy 114
2023 Harley Davidson FLHCS Softail Heritage Classic 114
2023 Harley Davidson FXBBS Softail Street Bob 114
2023 Harley Davidson FXBR Softail Breakout
2023 Harley Davidson FXFBS Softail Fat Bob 114
2023 Harley Davidson FXLRS Softail Low Rider S
2023 Harley Davidson FXLRST Softail Low Rider ST
2023 Harley Davidson FXST Softail
2024 Harley Davidson FLFBS Softail Fat Boy 114
2024 Harley Davidson FLHCS Softail Heritage Classic 114
2024 Harley Davidson FXBBS Softail Street Bob 114
2024 Harley Davidson FXBR Softail Breakout
2024 Harley Davidson FXLRS Softail Low Rider S
2024 Harley Davidson FXLRST Softail Low Rider ST
2024 Harley Davidson FXST Softail