2.5 Rear 2 Tube Bypass Shock

Spec sheet

Collected from 2 supplier pages - confirm fit with the supplier before ordering.

Description The King Shocks 25001‑381 pair is a bolt‑on OEM performance upgrade for the rear of 2003–2023 Toyota 4Runner (with or without KDSS) and 2007–2014 FJ Cruiser. These are 2.5″ diameter 2‑tube bypass shocks with remote reservoirs, custom‑tuned for optimal ride quality and improved off‑road control, while increasing fluid capacity and heat dissipation. Specifications Body diameter: 2.50″ Extended length: 24.756″ Compressed length: 16.242″ Stroke: 8.514″ Gas pressure: 150 psi (N₂ gas charged) Remote reservoir with hard‑anodized 6063 aluminum reservoir Non‑adjustable bypass valving (compression & rebound tuned in factory) 100% bolt‑in OEM fitment for included vehicles Fully rebuildable, serviceable, and tunable What's Included Pair of 2.5″ King bypass shocks with remote reservoirs Pre‑mounted reservoir brackets and hoses Steel washers, bushings, and mounting hardware Installation instructions (INS‑T013 PDF) Each shock features cadmium‑plated body, Teflon bronze wear band, urethane seals, and rebuildable internals Features Precision‑bored cadmium‑plated 2.5″ body Heat‑treated 6061 aluminum alloy piston Stainless‑steel valve shims Teflon‑lined spherical bearings & misalignment spacers 7/8″ hard‑chromed, heat‑treated, micro‑polished shaft (100 ksi tensile) Hard‑anodized 6063 aluminum reservoirs Aircraft‑grade billet aluminum components Fully rebuildable and tunable design External reservoirs for increased fluid capacity and heat dissipation Made in the USA, dyno and real‑world tested Compatibility 2003–2023 Toyota 4Runner (4WD – includes KDSS) 2007–2014 FJ Cruiser They fit both stock-height and lifted rear suspensions (up to ~2.5″)

Suppliers (2)

• Dirt King Fabrication

  2.5 Rear 2 Tube Bypass Shock · Orderable · stock unverified

  Checked Nov 5, 2026
  $1,782.00
  View at supplier
• Downsouth Motorsports

  4RUNNER 03-09, 4RUNNER 10-24, FJ 06-14 REAR 2.5 DIA. 2 TUBE REMOTE RES. BYPASS SHOCK · Orderable · stock unverified

  Checked Nov 5, 2026
  $1,782.00
  View at supplier

Price history