Kelltrac Adjustable Lowering Kit 4/8" Drop – Street Series (Hybrid-Bushing) for 2015–2026 F-150
The Kelltrac 4/8" Street Series Adjustable Lowering Kit with Hybrid-Bushing technology is engineered for F-150 owners seeking improved stance, enhanced handling, and everyday ride comfort—all while delivering performance gains across street and race environments. Designed through more than a year of intensive testing, this kit optimizes front shock travel, provides wide-range adjustability, and integrates Kelltrac’s durable hybrid poly-bearing mounts for excellent control and reduced NVH.
Built for daily drivers, street racers, no-prep competitors, and weekend drag racers, this Street Series kit uses Viking Warrior shocks and custom Landrum springs to deliver exceptional balance. It offers improved stability, better traction, precise suspension response, and a significantly upgraded overall driving feel from the moment it's installed.
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Hybrid-Bushing (Poly-Bearing + Poly Bushings) design for comfort and performance
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Adjustable 4"/8" drop for custom stance and optimized geometry
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Increased front suspension travel for better control and weight transfer
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Viking Warrior valving tailored specifically to F-150 leaf-spring dynamics
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Perfect for daily driving, street performance, and occasional drag racing
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Complete installation kit with all required components included
Included Components
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Front height-adjustable, double-adjustable Viking coilovers
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Kelltrac front coilover conversion mounts with adjustable shock position
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Adjustable front camber kit
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Rear stock-location Kelltrac DOUBLE-adjustable Viking shocks
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Bilstein high-density foam bump stops
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Monroe shock dust boots
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Rear leaf-spring flip kit
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Rear pinion-angle correction kit
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Transmission shim kit
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Ultra low-profile rear bumpstops
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New rear leaf-spring hardware
Key Features
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Designed exclusively for STREET & DRAG STRIP applications
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Viking Warrior shock valving tuned by Kelltrac
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CNC-machined lightweight hardware
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Fully adjustable compression & rebound damping
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Spherical-bearing front mounts for maximum responsiveness
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High-durometer polyurethane rear bushings for superior comfort
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Precision-fit components crafted to maximize performance
Performance Benefits
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Improved traction on all surfaces, from street to no-prep
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Increased shock travel for better suspension performance
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Noticeably enhanced handling, stability, and overall road feel
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Fully tunable ride height to match your build goals
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Easy installation—typically 4 hours
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Superior suspension control with improved ride comfort
Notes
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Not designed for towing
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Frame notching may be required in some setups
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Max front camber adjustment averages –2.0°
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Adjustable upper control arms may be needed for reduced negative camber
Vehicle Fitment
- 2015 Ford F-150
- 2016 Ford F-150
- 2017 Ford F-150
- 2018 Ford F-150
- 2019 Ford F-150
- 2020 Ford F-150
- 2021 Ford F-150
- 2022 Ford F-150
- 2023 Ford F-150
- 2024 Ford F-150
- 2025 Ford F-150
- 2026 Ford F-150
Kelltrac Terms Of Service
Kelly considers his Kelltrac line to be a specialty line for a unique customer base and has his own terms of service in addition to Beefcake Racing's. You must accept these terms on all Kelltrac orders. Please read shipping times, cancellation, and returns. If time is of the essence, we do have other options that can ship right away / quicker. Just reach out to one of our sales associates at Beefcake Racing.
Cancellations & Returns
KellTrac Innovations does not accept product returns. Once your order ships, you own it and we will not accept it back - NO EXCEPTIONS. We do not accept order cancellations after the product has shipped. If you understand and accept this please check the box and continue checking out. If you do not accept this, please stop and discontinue the order process. Thanks!
Due to the custom nature of our business and product offerings, we charge a 20% order cancellation fee, period, non-negotiable, no matter who you are. Orders can only be cancelled before the product ships. We do not accept order cancellations after the product has shipped. If you understand and accept this please check the box and continue checking out. If you do not accept this, please stop and discontinue the order process. Thanks!
Leadtime
Please be aware that most orders ship within 2-4 weeks. In some (rare) cases, orders can take up to 6-8 weeks to ship. Holidays can severely impact these lead times. *DO NOT CONTACT US ABOUT YOUR ORDER UNLESS IT IS OLDER THAN 20 BUSINESS DAYS!* If you understand and accept this please check the box and continue checking out. If you do not accept this, please stop and discontinue the order process. Thanks!
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
