Direct fit subframes for the Ford Fiesta Mk5 ST150, bolting to the standard seat mounting points with no drilling required. Part number SU-FO-ESMK5-ST150. Available as driver side only, passenger side only, or both as a pair.
The ST150 ran from 2005 to 2008 using the 2.0-litre Duratec producing 150bhp. It was the closest thing to a driver’s Fiesta before the Mk7 ST arrived, and it built a following in club racing through the Fiesta ST Trophy series. The standard seats were reasonable for road use but were not built for sustained lateral load on a circuit.
These subframes use the Cobra 291mm x 330mm bolt pattern, the standard pattern across the majority of Cobra seats. A sliding runner is included in the price, which restores fore and aft adjustment that a fixed bucket seat removes. That matters: without a runner, the seat position is fixed at the frame geometry, and not every driver fits the same bracket height the same way.
If both seats are being replaced, order the pair. The pair is two of the same subframe rather than a different combined part; the saving is in the single order rather than a special component.
Have you written anything useful for my car?
Yes: Top 5 reclining seat choices for your Ford Fiesta Mk6, including our fitting guide, and Top 5 reclining seat choices for your Ford Fiesta ST180, including our fitting guide. Those are written around the same car, from real fittings and customer questions, so they are worth a look before you decide.
Will this fit my car?
This frame is made for the Ford Fiesta Mk5 ST150. 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?
Cobra design each tailored frame around a particular seat, so check the Compatible seats tab above for the designed pairing. Other seats with a matching bolt pattern can work as cross-compatible components rather than a designed set, so ask us before mixing brands.
Do I keep fore-and-aft adjustment?
Yes, and unlike most brands the sliding runner comes included with a Cobra frame, in the price. That changes the like-for-like comparison against other makers, where the runner is a separate part on top. Our guide to sliding runners covers how they work.
Base mount or side mount, and does it matter?
This is a base-mount frame: the seat bolts down through its base, the simpler stack that suits seats with a flat bottom and keeps the install low-fuss. Our guide on base mount versus side mount explains the whole fitting stack.
Is this for the driver or passenger side?
This listing covers a pair, driver and passenger side for a right-hand-drive car. Left-hand-drive car? Ask us, as the sides swap over and availability varies by model.
