Bilstein 25-344820 — official product photo

Bilstein 2017-2026 Ford F-250 / F-350 Super Duty 4WD B8 8100 (ZoneControl R DSA) Rear Shock (25-344820)

Sale price  $899.99 Regular price  $980.00
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Bilstein 25-344820 — official product photo

Bilstein

Bilstein 2017-2026 Ford F-250 / F-350 Super Duty 4WD B8 8100 (ZoneControl R DSA) Rear Shock (25-344820)

Sale price  $899.99 Regular price  $980.00

Not sure it fits?

Text us your year and model. We confirm fitment before it ships.

The B8 8100 (ZoneControl R DSA) reservoir shock absorber is an adjustable large bore 60mm (2.65" OD) direct fit solution for lifted trucks and SUVs. Click adjuster knobs allow easy and precise Dual Speed Adjustment of both low and high speed compression to tailor your ride to any surface. ZoneControl R is a revolutionary double piston technology delivering position sensitive rebound damping which eliminates harsh suspension top-out events and the need for an external limit strap. Each B8 8100 (DSA) offers a unique remote or piggyback reservoir solution for an easy, hassle free installation. These shock absorbers feature a monotube design for consistent fade free performance and utilize velocity sensitive digressive valve settings which are tuned for each specific application. The large 60mm piston design offers more comfort and control in all driving conditions. The Bilstein B8 8100 (ZoneControl R DSA) offers unmatched levels of adjustable ride comfort and control.

Applications (per Bilstein)

  • 2017-2026 Ford F-250 / F-350 Super Duty 4WD Rear (official trims: King Ranch, Lariat, Limited, Platinum, XL, XLT). Official notes: Fits Vehicles With 0-1" Rear Lift.

Official quantity per vehicle is 2. Sold each; order the quantity required for the axle.

Official specifications

  • Collapsed Length (in): 18.03
  • Extended Length (in): 30.15
  • Lower Mount Type: Eye 14.1mm
  • Upper Mount Type: Eye 16mm
  • Internal Design: Monotube
  • Finish: EVO Grey
  • Reservoir: Yes
  • Body Design: Smooth Body (Non-Coilover)
  • Body Diameter (od): 2.65 in.
  • Piston Diameter: 60mm
  • Adjustable Damping: Double Adjustable Compression with Click Adjuster Knobs
  • Spring Seat Included: No
  • Quantity per Vehicle: 2

Limited Lifetime Warranty (per Bilstein).

Sold and installed at Vertex Motorsports in Appleton, WI. Call (920) 716-4005.

Installed by Vertex

Want it installed? We do that in-house.

Order it for your own build, or have our team in Appleton install it. Parts and installation can be quoted together.

Not sure it fits? Send us your year and model and we confirm before it ships.

Fitment confirmed Send your year and model. We check it before it ships.
Installed in-house Parts and installation quoted together in Appleton, WI.
Talk to a real car guy Call or text 920-716-4005, Monday to Friday, 10am to 6pm CT.

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