KellTrac Rear Spring Spacer Kit (KTI-RSS15) - 2015-2026 Ford Mustang S550/S650
Fine-tune the rear ride height of your 2015-2026 Ford Mustang with the KellTrac Rear Spring Spacer Kit. Designed for S550 and S650 Mustang applications, these spacers install on top of the rear coil springs between the factory rubber isolator and chassis, allowing you to raise the rear of the vehicle by approximately 1/4 inch, 1/2 inch, 3/4 inch, or 1 inch depending on the spacer thickness selected. This makes it easy to correct an overly low rear stance while retaining the spring combination that works best for your setup.
The KellTrac Rear Spring Spacer Kit is especially useful for performance and drag-oriented Mustangs running lowering springs where the desired spring rate results in insufficient ride height. Instead of changing springs and potentially altering your suspension characteristics, these spacers allow you to add rear ride height for improved tire clearance and alignment characteristics. Because the suspension geometry produces approximately twice as much vehicle rise as the physical spacer thickness, KellTrac offers multiple sizes to provide predictable ride height adjustments from approximately 0.250 inch up to 1.000 inch.
Features
- Designed for 2015-2026 Ford Mustang S550 and S650 applications
- Provides a simple way to fine-tune rear ride height
- Raises the rear of the vehicle approximately 0.250 to 1.000 inch depending on selected spacer thickness
- Installs on top of the rear coil spring
- Positions between the factory rubber spring isolator and chassis
- Uses one spacer per side
- Allows you to retain your existing rear coil springs
- Ideal for lowered performance and drag-oriented suspension combinations
- Helps provide additional rear tire clearance
- Can help improve alignment characteristics when additional rear ride height is required
- Multiple spacer thickness options allow the ride height correction to be matched to your setup
Spacer Thickness & Approximate Ride Height
- 0.125-inch spacer thickness provides approximately 0.250-inch of vehicle rise
- 0.250-inch spacer thickness provides approximately 0.500-inch of vehicle rise
- 0.375-inch spacer thickness provides approximately 0.750-inch of vehicle rise
- 0.500-inch spacer thickness provides approximately 1.000-inch of vehicle rise
Fitment
- 2015 Ford Mustang S550
- 2016 Ford Mustang S550
- 2017 Ford Mustang S550
- 2018 Ford Mustang S550
- 2019 Ford Mustang S550
- 2020 Ford Mustang S550
- 2021 Ford Mustang S550
- 2022 Ford Mustang S550
- 2023 Ford Mustang S550
- 2024 Ford Mustang S650
- 2025 Ford Mustang S650
- 2026 Ford Mustang S650
Additional Notes
- Spacers install between the factory rubber rear spring isolator and the chassis.
- One spacer is used on each side of the vehicle.
- Spacer thickness is not equal to the resulting vehicle ride height increase due to the Mustang's rear suspension geometry.
- A 0.125-inch thick spacer produces approximately 0.250-inch of rise, while a 0.500-inch thick spacer produces approximately 1.000-inch of rise.
- This kit is particularly useful when retaining a preferred lowering or drag spring while additional tire clearance or rear ride height is needed.
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!
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