The Ford Sierra ran rear-wheel drive at a time when most of the competition had switched to front-wheel drive, and that configuration is still why people rate it. The rear-wheel-drive layout meant the Cosworth and XR4i variants found a natural home in club rallying and sprint events through the late 1980s and 1990s, and the remaining cars are now concentrated with owners who use them properly. A bucket seat is almost a given in that environment, and fitting one to a Sierra without a proper sub-frame tends to produce a mounting setup that flexes at the wrong moment.
This Corbeau direct-fit sub-frame is engineered around the Sierra’s original floor fixing points. Rather than drilling new holes or building up from scratch, it uses the same bolt positions the factory used, which keeps the mounting geometry consistent and the floor structure intact. Depending on the specific kit supplied for your Sierra, this may be a complete replacement frame with its own sliding runner, or an adaptation bracket that carries a Corbeau seat off the existing floor frame. Either way, the result is a seat position that sits where Corbeau designed it to sit, not an inch too high or too low depending on what spacers were to hand.
The sub-frame is for base-mounted and reclining sport seats only. Side-mounted FIA seats use a separate mounting stack and are not covered by this product. It is priced per seat position at £245 exc. VAT, so order the item twice if you are fitting both driver and passenger sides. Select the seating position from the product options. At checkout, add a note with the Corbeau seat model you are fitting so we can confirm the kit is correct before it ships.
