S550 / S650 Mustang Rear Spring Spacer Kit
This rear spring spacer kit is designed for S550 and S650 Mustangs and provides an easy way to adjust rear ride height without changing your springs. Each spacer mounts between the top of your rear coil spring and the factory rubber isolator, raising the vehicle by approximately 1/4", 1/2", or 3/4", depending on the option selected.
Ideal for drag racing setups that use lowered rear springs for a stiffer spring rate, this kit helps fine-tune rear suspension geometry, improve tire clearance, and assist with better alignment. It’s a simple and effective solution for achieving the stance and performance you need without compromising spring selection.
Product Highlights:
- Compatible with all S550 and S650 Mustang platforms
- Installs above rear coil springs between isolator and chassis
- Raises ride height by 1/4", 1/2", or 3/4" (selectable at checkout)
- Perfect for use with lowering drag springs
- Helps maintain tire clearance and proper alignment
A must-have for drag-focused builds where lowered springs and suspension tuning go hand in hand.
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
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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