Direct fit subframes for the Vauxhall Astra Mk3 GSi, bolting onto the car’s original seat mounting points.
Coming out of a GSi seat
The GSi came with a more supportive seat than the ordinary Astra, so you are not starting from nothing. What a bucket adds is support that holds up over a whole session rather than a single corner, and a lower hip point.
If the standard seats are simply tired rather than wrong, retrimming them is sometimes the better spend and we will say so. If you want the car to work properly on track, the bucket earns its place.
What you get
Base frame and sliding runner, in the price. The other five makers sell the runner as a separate part.
What it will take
Cobra base mountable buckets and reclining sport seats, 291mm or 405mm wide handle. Not a side mounted seat without adaption bars or side mounts.
Tell us the seat at checkout. Priced per frame, which fits one seat.
Have you written anything useful for my car?
Yes: Top 5 reclining seat choices for your Vauxhall Astra Mk2, 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 Vauxhall Astra Mk3 GSI. 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.
