KellTrac Double Adjustable Rear Coilover Kit – Stock Location (Street Strip)
1979–2004 Ford Mustang | Fox / SN95 / New Edge
Street Strip Performance with Maximum Adjustment
The KellTrac Double Adjustable Rear Coilover Kit – Street Strip Series is designed for Mustang enthusiasts who demand aggressive performance capability while still maintaining street manners. Built for 1979–2004 Fox, SN95, and New Edge Mustangs, this stock-location rear coilover system delivers improved stance, increased shock travel, and a wider adjustment range to handle everything from daily driving to drag racing, autocross, road racing, and no-prep competition.
After more than a year of testing and refinement, KellTrac engineered this setup to provide more rear wheel rate options, better traction, and enhanced suspension control — all while saving an average of 15 lbs compared to traditional rear suspension configurations. From the moment it’s installed, this kit improves both the performance and appearance of your Mustang.
Viking Berserker Shock Technology & Premium Components
This Street Strip system features legendary double adjustable Viking Performance Berserker coilover shocks, custom-valved specifically for KellTrac applications. With independent compression and rebound adjustment, these shocks allow precise tuning for varying track surfaces, tire combinations, and driving styles. The Berserker shocks offer increased performance capability over street-focused options, making them ideal for mixed-use and competition-oriented builds.
Custom 2.50-inch Landrum Performance coilover springs are spec’d per application to ensure proper wheel rates and predictable suspension behavior. CNC-machined billet upper mounts, durable coated lower offset shock mounts, and extreme-strength mounting hardware provide a rigid yet lightweight solution suitable for competition use. High-durometer polyurethane bumpstops are pre-installed to maintain controlled suspension travel and shock longevity.
Designed for Street, Strip, Track & Autocross
This system was designed and tested exclusively for street, strip, track, and autocross applications, offering unmatched versatility in a stock-location rear suspension package. Adjustable ride height and double adjustable valving allow drivers to fine-tune stance, traction, and handling characteristics for virtually any surface condition or driving scenario.
What’s Included
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KellTrac billet upper coilover shock mounts
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Zinc-coated extreme-strength shock mount hardware
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Chassis reinforcement backing washers
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Double adjustable Viking Berserker coilover shocks
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Custom 2.50" Landrum Performance coilover springs
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High-durometer polyurethane bumpstops (pre-installed)
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Durable coated lower offset shock mounts
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Extreme-strength lower shock mount hardware
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Coilover adjustment spanner wrenches
Key Features
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Designed and tested for street, strip, track, and autocross use
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Viking Berserker shocks with custom KellTrac valving
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Independent compression and rebound adjustment
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Adjustable ride height
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Increased shock travel for improved suspension control
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CNC-machined lightweight yet rigid components
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Precision fitment for maximum performance
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Assembled in-house and ready to install
Performance Benefits
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Saves an average of 15 lbs
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Improved handling, traction, and driver feedback
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Ability to dial in ride height and suspension response
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Wide range of spring rate options
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Promotes traction on all surfaces
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Balanced ride quality with serious performance capability
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Approximately 1-hour installation time
Vehicle Fitment
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1979 Ford Mustang
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1980 Ford Mustang
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1981 Ford Mustang
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1982 Ford Mustang
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1983 Ford Mustang
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1984 Ford Mustang
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1985 Ford Mustang
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1986 Ford Mustang
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1987 Ford Mustang
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1988 Ford Mustang
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1989 Ford Mustang
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1990 Ford Mustang
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1991 Ford Mustang
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1992 Ford Mustang
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1993 Ford Mustang
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1994 Ford Mustang
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1995 Ford Mustang
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1996 Ford Mustang
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1997 Ford Mustang
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1998 Ford Mustang
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1999 Ford Mustang
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2000 Ford Mustang
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2001 Ford Mustang
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2002 Ford Mustang
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2003 Ford Mustang
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2004 Ford Mustang
Important Notes
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May increase NVH levels — not recommended for customers sensitive to noise or vibration
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Not designed for towing or off-roading
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Check all brake line and component clearance to springs; minor tab bending may be required
For help selecting spring rates or setting this kit up for your specific Mustang and intended use, contact Beefcake Racing before ordering for expert support.
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
