A Planted Technology seat bracket for the Audi Quattro, 1980 to 1991. Part number SB311.
The Ur-Quattro, and the car that made four wheel drive the default in rallying within about three years of arriving.
Which is why originality is worth real money now
Values have climbed hard, particularly on the short wheelbase Sport Quattro and the 20 valve cars. Buyers on these look closely at what has been changed, and a floor that has been drilled or cut is a permanent mark against the car.
The bracket picks up the factory mounting points so nothing is cut. Store the original seats and every fixing somewhere dry and label them.
If you are building for historic events
Plenty of Ur-Quattros are competing, and historic class rulebooks are frequently specific about seats and mounting. Tell us the class before you order anything and we will check the seat as well as the bracket.
What suits it
A modern carbon bucket looks wrong in one. Ask us about retro and period trimmed shells, which most owners end up choosing.
Forty year old Audi floors deserve a proper look with the carpet up.
Have you written anything about this exact product?
Yes, we have covered this exact product: Lexus Planted Technology Frames Updated For 2026, and Customer Car: Subaru Impreza With Corbeau RRS Seats and Planted Technology Brackets. That is first-hand coverage from our own builds and showroom, not brochure copy.
Will this fit my car?
This frame is made for the Audi Quattro. Chassis code and years matter more than the badge, as floor pans change between generations, so if your car sits near a changeover year, send us the registration and we will confirm before you order.
Which seats does it take?
Check the bolt pattern in the specification against your seat. The Compatible seats tab above lists what bolts straight on. If your seat is not listed, tell us what you run and we will confirm the fit.
Do I keep fore-and-aft adjustment?
Only with a sliding runner between the frame and the seat, which is a separate part on Planted frames. If more than one person drives the car, budget for the runner. Our guide to sliding runners explains the options and widths.
Is this for the driver or passenger side?
Both sides are available on this listing, pick driver or passenger side at the point of order (sides listed are for right-hand-drive cars). Left-hand-drive car? Ask us, as the sides swap over and availability varies by model.