KellTrac X-SERIES Viking Crusader Coilover Kit (KTI-FCO15DA-X) - 2015–2026 Mustang S550 & S650

The KellTrac X-SERIES Viking Crusader Coilover Kit is engineered for extreme drag racing applications where power levels exceed 1,500 horsepower and wheelie control is non-negotiable. Built from years of real-world drag racing experience, this system represents the most aggressive, most capable front suspension solution KellTrac has ever developed.

Designed specifically for hardcore drag and no-prep racing, the X-SERIES coilovers feature an industry-unique dual spring configuration paired with KellTrac’s proprietary drag race–specific compression and rebound valving. Developed in partnership with one of the world’s leading adjustable shock manufacturers, this system eliminates guesswork and delivers predictable, repeatable launch control even in the most violent high-horsepower scenarios.

Fully assembled and ready for installation, the X-SERIES kit is a true stock-replacement-style coilover designed around OEM fitment while delivering unmatched control over weight transfer. If your Mustang is built to win and wheelie management is critical, this is the system designed to handle it.

Features

• X-SERIES Viking Crusader-based coilover system for extreme drag racing
• Fully assembled and ready for installation
• Designed as a stock-style replacement coilover for drag race use
• Dual spring design for superior shock and weight transfer control
• KellTrac-spec adjustable valving based on power level and surface conditions
• Removes front sway bar for maximum drag race performance
• OEM-based fitment with high-quality aluminum construction
• Anodized finish for corrosion resistance and durability
• Industry-unique spring and valving combination for ultimate wheelie control

Benefits

• Promotes maximum traction when properly adjusted
• Controls weight transfer better than conventional coilover systems
• Allows more power to be applied through smoother shock control
• Easily adjustable for changing track and surface conditions
• Helps prevent excessive wheelies in high-horsepower applications
• Can be tuned to promote wheelies for no-prep use (consultation recommended)
• Simple bolt-in installation — align and go

Important Notes

• For off-road use only
• Designed for drag racing and limited street use
• Rated for extreme high-horsepower applications (1500HP+)
• No implied warranty due to the custom, race-specific nature of this product

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 Return

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