The XL is the B6 made 30mm wider inside. That is the whole story, and it is a more useful 30mm than it sounds. Drivers who find the standard B6 pinches across the hips after twenty minutes usually get on with this one straight away.
Because the shell is wider inside, the external widths move up too. You pick between 43cm with the rolled edges cut off and 47cm with them left on, against 40cm and 44cm on the standard seat. Check the 43cm figure against your tunnel and sill before ordering, because an XL shell in a car that was tight on a standard B6 is not going to go in.
The listing shows a 36 to 40 inch waist for this seat. Tillett size their range in two steps and do not publish a per model driver weight limit for the XL shells, so if you are near the top of that band, ring us and we will check with them rather than guess at it.
Same construction as the standard B6, black gloss GRP, Dinamica covered headrest panel included, no padding needed. Road and Track, no FIA homologation.
One difference worth knowing: this shell is listed for base mount as well as side mount, so you have more options on how it goes into the car. Supplied as a seat only, six point harness compatible.
Same price as the standard B6, so the wider shell costs you nothing extra. Part number B6XL-47GRPBM.
Have you written anything about this exact product?
Yes, we have covered this exact product: Tillett B6 XL Screamer Seat Unboxed In-Store. That is first-hand coverage from our own builds and showroom, not brochure copy.
Will I fit in this seat?
This is the XL version of the shell, cut wider than the standard seat. Tillett do not publish per-model driver limits for the XL shells, so rather than guess, send us your height and waist and we will confirm against the actual seat.
Is this seat FIA approved?
No, this is a road and track day seat rather than a homologated competition seat. For events that require an FIA seat, look at the FIA-approved shells in the range, and ask us if you are unsure what your series needs.
What do I need to fit it to my car?
This seat takes both base and side mounting, so the fitting stack depends on which route you pick for your car. You will need the car-specific frame, and a sliding runner if you want fore-and-aft adjustment. Our guide on base mount versus side mount walks through the whole stack, and tell us your car and we will quote the full kit.
Does it work with harnesses and a HANS device?
The shell takes 6 point compatible. If you are planning the full seat, harness, and HANS setup, tell us the car and we will spec it end to end.
How do I know it will feel right, not just fit on paper?
Fair question, because makers publish widths and weights, never feel, and two seats with identical numbers can feel nothing alike in the car. We keep the ranges on display in the Nottingham showroom, you are welcome to come and sit in them, and if you cannot get to us, call and describe your build, as the team sit in these seats every day. Our head support measurements guide shows the kind of real-world data we collect.
Tillett seats are custom-made to order
These carbon seats are handcrafted in the UK for each order. We do not stock or display them in the showroom, so everything is a special order placed with Tillett when you buy.
Lead times depend on the model and the options you choose, so ring us before ordering if you are working to a date.
Special order
Because each seat is made for you, our special order terms apply once production has begun.
Tell us your height, weight and the car, and we will confirm the right size and mounting before anything is made. Tillett sizing is specific and worth getting right first time.
