I/O Port Seat Back Brace

The I/O Port Racing Supplies Seat Back Brace has met with approval by SCCA, IMSA, NASA, BMW CCA and other sanctioning body's scrutinizers. Our new updated aluminum units are designed to bolt to the back of the seat and clamp to the roll bar, no welding required.

The unique clamp will fit roll bar tubing from 1½" to 1¾" in diameter. Our quick-pin brace adjusts from 2" up to 14" making the brace ideal for multi-driver cars. The plate that bolts to the back of the seat is 2½" x 8" for a total of 20 square inches. This brace can be used with just about any aluminum or composite seat at any angle. For fore or aft adjustments…just pull a pin, slide the seat and reinstall the pin. For other adjustments the brace can be loosened so that the seat can be tilted or moved up or down, and the brace then re-tightened.

SCCA, NASA, BMW CCA Club Racing, and IMSA require such braces on all non-FIA-rated seats. Please note: the design of the brace requires you to drill holes in the back of the seat and attach the bracket to the seat. Drilling holes and attaching a brace to a composite seat may void the seat warranty and/or the FIA-rating. Check with your seat manufacturer and sanctioning body rules. Installing this brace to an aluminum seat will not void any warranties and will comply with racing rules. Installation instructions and all mounting hardware are included. Also see our seat back brace FAQs.

  • All aluminum design
  • Billet aluminum clamp
  • Clamps to tubing from 1½" to 1¾" in diameter
  • No welding required
  • Adjusts from 2" up to 14"
  • Made in the USA
Part Price Purchase
io seatbrace $129.95

Brey Krause Seat Back Brace

Our adjustable seat brace is engineered to extend the protection of your roll cage to the back of your seat. The Brey-Krause adjustable seat brace is designed to fit 1 3/4", 1 5/8" and 1" diameter roll bars. The mounting bracket is secured with bolts through two holes which are drilled through the roll bar tubing. Once bolted to the roll bar, the seat brace can be adjusted fore, aft, up or down. This seat brace is designed for one piece (i.e. non-reclining) racing seats. The R-9019 is recommended for conventional reclining seats.

You'll need the bolt in kit r9021. Bolts to 1-3/4" tubing without shims. Shims are included for 1-5/8" and 1-1/2" tubing.

Part Description Price Purchase
bk r9020 Brace $155.00
bk r9021 Bolt-on Kit $140.00