STURDY CONSTRUCTION: Speedway Motors seat mount bracket is constructed of 1-inch OD tubular steel and .813-inch OD cross bars for strength and durability., CUSTOMIZABLE DESIGN: The seat mounting frame can be easily cut and welded to modify for custom installations, allowing for a personalized fit and optimal seat positioning., VERSATILE FIT: With a mounting bolt hole pattern of 14-1/4-inches x 18-inches center-to-center, the seat mount can fit almost any flat floor, making it perfect for '40s and '50s vehicles and most pickup trucks. May require some modification in the way of cutting, bending, welding or fitting to work with a specific application., SEAT SLIDER COMPATIBILITY: The frame is compatible with Speedway Motors universal bucket seat sliders (NOT INCLUDED), which bolt directly ont
Speedway Universal Bucket Seat Frame Mount Bracket Speedway Motors
Speedway Universal Bucket Seat Frame Mount Bracket
Sku # 91070025
Mfr. Part # 91070025
Condition
New
Brand
Speedway Motors
Sold
Each
Details
  • Seat mounting frame constructed of 1-inch OD tubular steel with .813-inch OD cross bars for strength
  • Frame can be easily cut and welded to modify in custom installations
  • Seat mounting frame has an installed height of 5 inches
  • Our universal bucket seat sliders (NOT INCLUDED) bolt directly to this frame
  • Does NOT include fasteners to mount seat frame to vehicle
  • Seat frame mounting bolt hole pattern is 14-1/4-inches x 18-inches center-to-center
  • Perfect for ’40s and ’50s vehicles and most pickup trucks

Fit Just About Any Seat to Your Flat Floor Hot Rod

With a mounting bolt pattern of 14-1/4-inches x 18-inches center-to-center the Universal Seat Mount will fit most any floor, though modification or fabrication may be required. Order a pair of these and update your classic ’40s or ’50s bench seat ride to a pair of buckets, providing more support and comfort and room to add a center console!

Of course, if your ride’s floor is not totally flat a little cutting and welding will allow our Universal Seat Mount’s steel tube frame to conform to just about anything. Shorten the legs or lengthen the legs as needed to get just the right seat position you are looking for.

You will need your own seat mount attaching hardware to mount the Universal Seat Mount frame to your floor. If you are looking for Universal Seat Mounting Brackets/Flanges and Universal Dual-Locking Seat Sliders to mount your aftermarket bucket seats we have what you need available separately.

Ready to Rack up the Miles

Our Universal Seat Mount is built from 1-inch OD round tube steel with .813-inch OD cross bars for strength and support. These universal bucket seat frame mount brackets are 5 inches tall and are designed for early hot rods and pickup trucks with a flat floor pan area, unlike later cars of the ’60s and ’70s that utilized welded-in-place automotive seat risers. If your vehicle’s floor is not completely flat the frame can be easily cut and modified/welded to fit your exact needs. 

Designed to work with our universal bucket seat slider tracks and seat mounting plates (NOT INCLUDED), our Universal Seat Mount can easily be modified to work with most any seat slider design to mount aftermarket bucket seats in your early hot rod or pickup. Our seat mount simply requires a flat floor pan to mount and four holes to be drilled and you are in business.

 

Specs
Position
Driver or Passenger Side
MFG. Part #
91070025
Overall Height
5.00"
Overall Thickness
1"
Tube O.D.
1"
Centerline of Holes
14.25"
Centerline of Holes (Alternate)
18.00"
Material Type
Steel
Finish
Painted
Sold in Quantity
Each
Notes
14.25" x 18.00" bolt hole pattern for the floor.
Reviews

Good product Good price

Rated
Product Rating
by G on January 24, 2026

Summary: These seat risers worked good from a 1942 Ford panel delivery. Good welds.

Yes, I recommend this product.

These are nice

Rated
Product Rating
by Jzc on November 29, 2025

Summary: Used in a 55 bel air Nice hight for the newer bucket

Yes, I recommend this product.

With a little customizing

Rated
Product Rating
by Lowtony on November 19, 2025

Summary: Being able to weld and fabricate made these the perfect base for my install. The end result for the first one is great. Yet to do the second, but it will come out the same.

Yes, I recommend this product.

Car seat mounts

Rated
Product Rating
by Bigrivercycle on November 06, 2025

Summary: Great parts,good welds,paint and fabrication.

Yes, I recommend this product.

Good product,good price

Rated
Product Rating
by Jay on October 27, 2025

Summary: I installed buckets seats in a 1954 3100 chvey. It's a good starting point and worked out well.de

Yes, I recommend this product.

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Tech Support
We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through eBay Messaging and a knowledgeable Speedway Motors team member will be happy to help.
About
Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.