FOX IFP-QSR Shocks for HD Softail Models - M8 Softail 13" STD REB Adjust — Harley-Davidson (2018-2024)

FOX IFP-QSR shocks engineered specifically for Harley-Davidson M8 Softail models, featuring a gas-charged monotube with internal floating piston and QS3 three-position quick-switch rebound adjustment. Direct-fit replacement that delivers model-optimized ride quality without requiring external reservoir tuning.

Features

• QS3 three-position quick-switch rebound adjust
• Gas-charged monotube with internal floating piston (IFP)
• 2.0" 6061-T6 aluminum body, Type III hard anodized
• Advanced high-flow deflective piston velocity-sensitive damping
• 5/8" low-friction hard chrome shaft
• Fully rebuildable and re-valvable
• Exclusive preload setting guide marks
• Matte Black spring with Black anodized preload ring

Specifications

• Brand: FOX
• Manufacturer Part #: 897-27-208
• UPC: 711745590809
• Length: 28 in
• Width: 8 in
• Height: 4 in
• Weight: 7.8 lbs

Fitment

Fits Harley-Davidson M8 Softail models with 13-inch standard stroke. Not tuned for Heritage Classic models.

Frequently Asked Questions

Will these fit my Heritage Classic Softail?

No — FOX does not tune these shocks for Heritage Classic geometry. Order the Heritage-specific part number instead.

What does QS3 rebound adjustment do?

Three-position click switch lets you dial rebound damping on the fly — no tools needed. Adjust for load, road conditions, or riding style without removing the shocks.

Can I rebuild these shocks later?

Yes — these shocks are fully rebuildable and re-valvable. FOX and authorized shops can service them when needed.

Do these require any special installation tools?

Standard shock installation tools apply. Follow the preload guide marks included with the shocks to dial in sag for your weight.

What's the difference between IFP and traditional shocks?

IFP (internal floating piston) keeps air and oil separated inside the shock body, preventing oil foaming and delivering more consistent damping over time.