KellTrac Ultra Spec Viking Crusader Shocks, Pair (KTI-KT358U) - 2015–2026 Ford Mustang
The KellTrac Ultra Spec Viking Crusader Shocks are the most proven double adjustable rear shock solution available for S550 and S650 Mustangs. Designed for enthusiasts who demand serious performance without jumping straight to extreme race-only hardware, the Ultra Spec setup delivers exceptional control, consistency, and adjustability for street, strip, prep, and no-prep applications.
Built on the trusted Viking Crusader platform, these shocks feature KellTrac’s proprietary compression and rebound valving developed through years of real-world testing. This valving allows the shock to perform across a wider range of power levels and track conditions than standard offerings—making it a favorite among racers chasing consistent sixty-foot times and repeatable results.
The Ultra Spec shocks are ideal for cars ranging from mild street/strip builds to aggressive drag setups using aftermarket mounts. With moderate NVH and OEM-style fitment, they strike the perfect balance between comfort, tunability, and race-winning performance.
Features
- KellTrac Ultra Spec Viking Crusader shocks with proprietary double adjustable valving
- Designed for S550 and S650 IRS Mustangs
- Independent compression and rebound adjustment
- Optimized for street, strip, prep, and no-prep racing
- Race-proven tuning used on 1.19-second and quicker sixty-foot cars
- Stock-style shock design for easy installation
- Moderate NVH suitable for performance-focused street use
- Limited remote setup and tuning support included
KellTrac Crusader Series Guide
- Crusader: Race-focused with some street use; low NVH
- Crusader Ultra Spec: Most proven double adjustable option; moderate NVH
- Stock-Style Design: Direct replacement using factory-style mounts
- Inverted Design: Improved clearance and easier adjustments; includes upper mounts and bump stops
- Inverted Triple Adjustable: Maximum performance option for competitive racing
Fitment
- 2015 Ford Mustang
- 2016 Ford Mustang
- 2017 Ford Mustang
- 2018 Ford Mustang
- 2019 Ford Mustang
- 2020 Ford Mustang
- 2021 Ford Mustang
- 2022 Ford Mustang
- 2023 Ford Mustang
- 2024 Ford Mustang
- 2025 Ford Mustang
- 2026 Ford Mustang
Note: Most Kelltrac orders ship within 2–4 weeks. While uncommon, some orders may require up to 6–8 weeks to ship.
NOTE: Kelltrac Parts are considered Race Parts and are not eligible for ReturnCA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
