KellTrac Spec Viking Crusader Shocks, Pair - 2015–2026 Ford Mustang
The KellTrac Spec Viking Crusader Shocks are engineered for Mustang owners who demand race-proven performance with real-world street usability. Designed specifically for S550 and S650 IRS applications, these shocks feature KellTrac’s proprietary compression and rebound valving developed through years of on-track testing across street, strip, prep, and no-prep environments.
Built on the trusted Viking Crusader platform, this setup is ideal for weekend warriors and serious racers alike—delivering consistent launches, improved traction, and predictable chassis control without excessive noise or harshness. KellTrac’s suspension tuning has helped more 2005+ Mustangs achieve 1.19-second or quicker sixty-foot times than any other company, and these shocks are a direct result of that experience.
Available in multiple configurations to match your build goals, the KellTrac Spec Crusader shocks allow you to fine-tune performance while maintaining durability and drivability. Every set includes limited remote setup support to ensure your shocks are optimized for your specific application.
Features
- KellTrac-spec compression and rebound valving for S550 and S650 IRS Mustangs
- Based on the Viking Crusader shock platform
- Designed for street, strip, prep, and no-prep racing applications
- Double adjustable design for precise tuning
- Race-proven setup used on 1.19-second and quicker sixty-foot cars
- Available in stock-style or inverted configurations
- Limited remote setup and tuning support included
Crusader Configuration Guide
- Crusader: Ideal for cars that are primarily raced 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; lowest NVH
- Inverted Design: Improved clearance and easier adjustments; includes upper mounts and bump stops
- Inverted Triple Adjustable: Maximum performance-focused 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
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

