


Upgrade your F-150's ride and handling with Superlift's Shadow Series shocks. Engineered for lifted setups, these rear shocks deliver smoother control, improved stability, and durable performance both on and off-road.
Top Features
Designed for 6” lifted 2021–2023 Ford F‑150
10-stage velocity-sensitive valving for controlled ride
Durable twin-tube design with steel body
Chrome-plated shaft for corrosion resistance
Bolt-on installation using factory mounts
Assembled in Louisiana
Backed by a 1-year warranty
Vehicle Fitment
Fits 2021–2023 Ford F‑150
Compatible with 4WD models
Fits multiple trims: XL, XLT, Lariat, King Ranch, Platinum, Limited, Tremor, Raptor
Works with engines: 2.7L, 3.3L, 3.5L (Gas/Hybrid), 5.0L V8, 3.0L Diesel
Physical products may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed, it is non-refundable.
Digital Products, such as MPT Tunes and HP Tuners Credits, are not covered by this.
Please see our Refund Policy or contact an MPT Expert for more information.
MPT is proud to offer free shipping on most orders over $149.
Free Shipping applies only to the contiguous United States. Shipping and handling charges will apply to all orders outside the contiguous US, with the buyer being responsible for any duty fees or taxes their home country may charge to import goods.
With Free Shipping, we will choose the best shipping method for the order. We use all major carriers, including USPS, FedEx, UPS, and DHL.
Items not stocked at our location may incur additional lead-time or charges.
Please our Shipping Policy for more information.


Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986) is a California law that applies to all companies selling products in California. Proposition 65 requires warnings if a product contains any listed chemical present above very low levels that are known to cause cancer, birth defects or other reproductive harm. Proposition 65’s warning standards are among the most stringent in the world. Proposition 65 is not a product safety law, but rather a “right-to-know” law. Businesses are required to provide warnings to comply with Proposition 65. These warnings are required to be in place for all products offered for sale in California.
There are over 800 chemicals on the Proposition 65 list, which is administered by California's Office of Environmental Health Hazard Assessment (OEHHA), a part of the California Environmental Protection Agency. The list includes naturally occurring and man-made chemicals. Proposition 65 warnings can be seen for a wide variety of everyday consumer products, including Automotive Performance products, and warnings can be seen posted throughout California in a variety of establishments such as hotels, restaurants, automobile dealerships/repair shops, and retail stores just to name a few.
To comply with the requirements of Proposition 65, this warning is present on all products sold by MPT.
More detailed information can be found by going to:
https://www.p65warnings.ca.gov/
A high‑performance rear shock solution designed specifically for lifted or stock 2021–2023 Ford F‑150 trucks, the Superlift 84123 rear Shock Box from the Shadow Series delivers a perfectly balanced ride that's both smooth and controlled. Built with precision and durability in mind, this shock box restores confidence behind the wheel—whether cruising the highway or handling rugged off‑road terrain. Its advanced valving and corrosion‑resistant construction make it the go‑to choice for Ford enthusiasts seeking lasting comfort and stability.
Designed for stock or lifted Ford F‑150 pickups
Durable chrome‑plated steel shaft for smooth, long-lasting performance
10‑stage velocity‑sensitive valving for optimal control over bumps and road variations
Reinforced steel body with corrosion-resistant coating
Ensures proper suspension travel at 6 in. lift height
Twin‑tube Shadow Series design engineered for both on‑road comfort and off‑road capability
Proudly assembled in Louisiana
Backed by a one‑year manufacturer warranty
Significantly improves handling, stability, and overall ride quality
Provides a smooth, responsive driving experience in varied conditions
Maintains proper suspension geometry even when lifted, reducing wear on other components
Built to resist corrosion, ensuring reliable performance over time
Straightforward bolt‑on installation saves time and effort
One‑year warranty offers peace of mind and protection against defects
Lift Height: 6 in.
Finish: Corrosion‑resistant grey coating on steel body
Shaft Material: Chrome‑plated steel
Body Style: Twin‑tube Shadow Series shock box
Weight (pack): Approximately 26 lbs
UPC: 804260106317
Sold as a rear shock pack (set of two) suitable for driver or passenger side
Installation is straightforward and achievable by most DIYers: expect to complete the job in 1–3 hours, as per installation time estimates from authorized dealers. All mounting hardware fits directly into existing factory locations, delivering a fast, hassle‑free setup.
Compatible with the following vehicles without drive‑train or engine restrictions:
Year Range: 2021–2023 Ford F‑150
Models: XL, XLT, SSV, Raptor, Police Responder, Platinum, Limited, Lariat, King Ranch, Tremor
Drive Configuration: 4‑Wheel Drive
Suitable for a variety of engine types, including 2.7 L V6 (gas), 3.3 L V6 FLEX, 3.5 L V6 (gas), 3.5 L V6 full hybrid (FHEV), 5.0 L V8 FLEX, and 3.0 L V6 diesel on certain trims
For any inquiries or corrections regarding this description, customers are encouraged to reach out to the MPT Performance experts at (407) 636‑7077 or by email.
MPT is proud to offer free shipping on most orders over $149.
Turnaround Times:
Special Considerations:
A Return Authorization Number is required for all returns. Please contact an MPT Expert to obtain an RA # before sending anything back to us for any reason.
MPT tuning charges and license fees are Non-Refundable. The sale is final when MPT has sent the tune file over email. This includes both new tune purchases and tune updates.
Products other than MPT tunes, digital products, and MPT decals may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed it is non-refundable. We reserve the right to deny the return, should the product be received and it display signs of installation or unmentioned damage.
For vehicle programmers/tuners, the vehicle must be returned to stock if a program was installed. If a tuning device is returned and has not been returned to stock, a refund will not be issued, and your tuner will not be sent back without a shipping and handling fee.
The customer is responsible for all shipping charges incurred during the return process.
Amount Refunded:
•Returns post marked before 30 days from the date the item was received will be refunded the purchase price, minus a 25% restocking fee and the cost of shipping.
•After 30 days, all sales are Final.
•Shipping charges along with any package insurance are non-refundable. If your purchase was shipped with our Free Shipping option, the cost of the shipping will be subtracted from the total refund amount.
HP Tuners Credits are assigned to the HP Tuners product with the submitted serial number and cannot be transferred. Once you load a tune to your vehicle with the RTD, these credits are Non-Refundable.
Digital products and files that have no ability to be taken back physically, such as an SCT Tuner Unlock, are Non-Refundable.
nGauge Tune License Fee is included in your initial purchase of MPT tunes for the nGauge. This fee is factored into the price of the tunes and becomes Non-Refundable when the stock file has been emailed to MPT.
MPT Decals are Non-Refundable, once they have been received by the customer.
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021-2024 | Ford | F-150 | King Ranch |
| 2021-2024 | Ford | F-150 | Lariat |
| 2021-2023 | Ford | F-150 | Limited |
| 2021-2024 | Ford | F-150 | Platinum |
| 2021-2024 | Ford | F-150 | Police Responder |
| 2021-2023 | Ford | F-150 | Raptor |
| 2021-2024 | Ford | F-150 | SSV |
| 2024 | Ford | F-150 | STX |
| 2021-2024 | Ford | F-150 | Tremor |
| 2021-2024 | Ford | F-150 | XL |
| 2021-2024 | Ford | F-150 | XLT |
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