Tillett B7 XL


At 3.8 kg the B7 is the world’s lightest seat homologated to FIA standard 8855-1999. This is arguably the best performance racing seat on the market due to its incredibly compact design, high strength, ultralight weight, unrivalled support and manufacturing accuracy.

Some brands use misleading phrases alongside their FIA seat. Advertising, their product is the lightest. We can confidently state “Tillett are the only brand in the world that offer a FIA homologated 8855 – 1999 seat, usable in competition at 3.8kg”. This is achieved by manufacturing with our highly developed in house moulding technique. Tillett constantly invests in high levels of research and development. This creates parts with superior strength, accuracy and performance.

As with all Tillett seats, the B7 has a carefully contoured shape that supports the whole upper torso, leaving the shoulders free to steer the car unhindered. A high level of support throughout the seat and the removal of all pressure points is so comfortable, that the seat needs no covering at all. This not only helps with practicality on open top cars but also allows a much lower driving position than a seat with a thick foam cushion.

With its ultra-rigid design, the B7 retains the occupant in the intended position within the cockpit. Vital for stopping the harness and Hans device from becoming loose during an accident.

There are different edge cuts available. The B7-44 / B7-47 XL FIA are the variants we call “Edges on” meaning the seat has a continuous rolled edge. This feature allows for a more aesthetically pleasing line, making it easier to slide in and out of the car. Therefore, if you have the space, we recommend using these models.

The B7-40 FIA we call “Edges off”, these seats have the rolled edges by the leg cut away to fit them between the gearbox tunnel and the door sill of any restricted width cockpit.

We can also offer the B7-43XL “edges off” but this model has not been homologated, if a wide but narrow edge cut seat is required, we suggest selecting the very similar B6-43 XL Screamer, as this model has been FIA tested and the same shape but only 2.2kg heavier. The B7-43 XL option is special-order.

Available with no seat inserts, black suede inserts, or silver stitched pattern inserts.




  • The lightest FIA approved homologated 8855-1999 seat in the world at 3.8kg (Weight of seats can vary by 10%).
  • Carefully sculpted and designed to be the most compact of all race car seats, lowering the driving position and maintaining ultimate comfort.
  • Body mirroring shape gives the driver support and unhindered steering control.
  • The rigidity designed into this seat firmly locates the driver within the intended space, keeping the seat belts and Han’s device in position throughout any potential collision.
  • Two internal seat widths available, Standard B7 and the 30mm wider B7-XL is for drivers generally over 100kg.
  • Two edge cut options for reducing external widths across the leg area, “edges on” 44cm/47cm-XL or “edges off” at 40cm. All options FIA homologated to 8855 – 1999. See images for visual understanding.
  • All B7 seats have integrated side mount bracket fixing positions.
  • Full race harness and 30° Hans compatible (5 or 6 point race harness recommended).
  • Gloss carbon fibre finish.
  • Manufactured at the Tillett factory using their specialist moulding system, creating strength and accuracy.
  • Does not require padding, making it a great option for ultimate feedback from the car, essential for a competition seat and practical for an open top race car.
  • Additional covered panel options available if required. Panel set will add approximately 1kg.
  • Dinamica® covered headrest panel included as standard.
  • All seat panels are customizable, contact the office directly or see bespoke add on product pages.
  • All Tillett car seats are premium quality products designed and manufactured in the United Kingdom.


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