21-25 Ford F-150 Rancho RS999073 Suspension Shock Absorber RS9000XL

Rancho RS9000XL Suspension Shock Absorber – Part No. RS999073 (21‑25 Ford F‑150 Rear)

Designed for drivers seeking enhanced ride control and towing confidence, the Rancho RS9000XL RS999073 shock absorber offers nine-position adjustable damping for tailored performance on pavement, highways, or rugged terrain. As the first nine-position manually adjustable series in the off‑road market, it delivers elite tuning flexibility that adapts to changing load and road conditions. Composed of high-durability materials and engineered for long-lasting reliability, this shock is ideal for hardworking Ford F‑150 trucks used in towing, hauling, and off-road duty. The RS9000XL RS999073 combines precision engineering with rugged construction to elevate ride quality and vehicle stability.

Key Features

• Industry-first nine-position manual adjustment knob for customizable firmness and damping

• Nitrogen‑gas pressurized (120 PSI) to minimize foam and fade during extended use

• 18 mm nitro‑carburized piston rod resistant to scuffing and corrosion

• Heavy-duty 1.25″ sintered-iron piston with double‑welded loops at stress points

• Large tri‑tube body (≈ 2.75″) filled with all‑weather fluid for temperature stability from –40 to 248 °F

• Polyurethane rebound bumper and bushings with graphite-filled piston for smooth responsiveness

• Self-lubricating seal and premium liquid-metallic finish with polyvinyl boot for longevity

Benefits

• Improves ride control and comfort across diverse load conditions and terrain

• Reduces damping fade even under heavy towing or off-road use

• Enhances durability under harsh environmental and temperature extremes

• Smooths ride transitions and handles abrupt surface changes seamlessly

• Backed by Rancho’s limited lifetime warranty for lasting peace of mind

Product Specs

• Size: Compressed length approximately 18.27″; extended length approximately 29.65″; stroke ≈ 11.38″

• Reserve tube diameter: 2.38″

• Mounting: Loop bushing & sleeve upper and lower (½″ ID × 1½″ OAL) 

• Body color/finish: Premium liquid-metallic finish with red dust shield and polyvinyl protective boot 

• Material: Nitro‑carburized piston rod, sintered iron piston, polyurethane bushings, self-lubricating seal

Install Difficulty Level
Installation is straightforward and requires no special tools or drilling. Typical install time is approximately 1 hour per shock, making it accessible for DIY enthusiasts and professionals alike (simple to intermediate skill level).

Vehicle Fitment
Compatible with 2021–2025 Ford F‑150 models equipped with 4WD, without Continuous Controlled Damping (CCD) suspension, and with rear lift height 0 to 1.50 inches. This includes Platinum, King Ranch, Lariat, XL, XLT, Tremor, Police Responder, and Limited trims, excluding Raptor models. Compatible with engine options including 2.7 L V6 EcoBoost, 3.3 L V6, 3.5 L EcoBoost, 5.0 L V8, PowerBoost hybrid, and the 3.0 L PowerStroke diesel in 2021 models.

For questions or to report any inaccuracies in this description, please contact the MPT Performance experts at (407) 636‑7077 or by email.