Rancho RS994316 RS9000XL Rear Shock Stock Height 2015-2020 F-150 4WD No Raptor

Vehicle Fitment

• 2015-2020 Ford F-150 (XL, XLT, STX, Lariat, King Ranch, Platinum, Limited, FX4 - All Cab Styles) - 4WD Only, Rear, Stock Height
• Engines: 2.7L EcoBoost V6, 3.3L V6 (2018-2020), 3.5L EcoBoost V6, 5.0L V8

Fitment Notes

• Rear position only. Sold individually - order two for a complete rear shock replacement.
• 4WD models only. Does NOT fit 2WD/RWD or AWD F-150 configurations.
• Does NOT fit F-150 Raptor - the Raptor uses a separate, incompatible rear shock application.
• Stock ride height application only. When used with a Rancho lift system: 2015-2016 models require RS66500B; 2017-2018 models are compatible with RS66505B, RS66506B, RS66500B, or RS66501B.
• Replaces legacy Rancho part number RS999316 - direct 4th-generation upgrade with integrated bottom mounts and dual component 2K paint finish.
• Not for use with aftermarket shock spacers or relocation brackets.

Features

• 9-position adjustable damping knob delivers precise rear ride control from soft daily-driver comfort to firm towing and off-road performance - adjustable by hand without tools.
• 4th-generation RS9000XL design features integrated bottom mounts for enhanced structural strength over previous-generation welded mounts.
• Dual component 2K paint finish provides superior chip resistance and long-term corrosion protection over the legacy liquid metallic coating.
• Large 2.75-inch tri-tube body with all-weather fluid operates cooler and delivers consistent damping under sustained towing, payload, and trail loads.
• 18mm nitro-carburized piston rod resists scuffing and corrosion for long-term durability across the F-150's range of on- and off-road use.
• Nitrogen gas pressurization at 120 PSI minimizes air-to-oil mixing to prevent damping fade during extended towing or repeated off-road cycles.
• Direct bolt-on replacement - all necessary washers, bushings, and nuts included; factory shock mounting bolts are reused.

Specifications

• Position: Rear (Left or Right)
• Lift Range: Stock Height
• Damping Adjustment: 9-Position Manual Knob
• Shock Body: 2.75 in. Tri-Tube, All-Weather Fluid
• Piston Rod: 18mm Nitro-Carburized
• Piston: Graphite-Filled Fluon-Banded, 1.25 in. Sintered Iron
• Gas Charge: Nitrogen (120 PSI)
• Finish: Dual Component 2K Paint (Liquid Metallic Silver)
• Bottom Mount: Integrated (4th-Generation)
• Drivetrain: 4WD Only
• Operating Temperature Range: -40°F to 248°F
• Sold: Individually
• Warranty: Rancho Limited Lifetime Warranty
• Replaces: RS999316 (Legacy Part Number)

Included Components

• 1x Rancho RS994316 RS9000XL Rear Shock Absorber
• 1x Polyurethane Bushing Set
• 1x Protective Polyvinyl Shock Boot
• 1x Hardware Pack (washers, bushings, and nuts)

Product Description

The Rancho RS994316 is the 4th-generation RS9000XL rear shock absorber for 2015-2020 Ford F-150 4WD trucks at stock ride height, directly replacing the legacy RS999316. The 4th-gen design brings integrated bottom mounts for improved structural rigidity and a dual component 2K paint finish that delivers superior chip and corrosion resistance over the previous generation. The 9-position manually adjustable damping knob lets F-150 owners fine-tune rear ride quality from soft and comfortable for highway cruising to firm and controlled for towing heavy loads or tackling off-road terrain - all without tools.

The large 2.75-inch tri-tube body, 120 PSI nitrogen gas charge, and 18mm nitro-carburized piston rod are application-matched to the 2015-2020 F-150 4WD rear suspension, delivering consistent damping performance under payload, towing, and repeated trail use without fade. This shock fits the rear axle position and is sold individually - two are required for a complete rear replacement. Compatible with 4WD configurations only; does not fit 2WD, AWD, or Raptor models.