T15

DEEPER SIDES AND CURVED BACK MAKE THE T15 THE BEST SOLUTION TO EFFECTIVELY SUPPORT A DEEP CHESTED DRIVER

Back by popular demand is a shape which has been successfully used since the late eighties.

The T15 is based around the very popular T7 / T8. This shape has always been very comfortable with its small flat, leg support and anti submarine front kickup, but most importantly the deeper sides and curved back make it the best solution to effectively support a deep chested driver.

When the old injection T8 moulds died after 25 years of continuous production, the customers relying on this shape were disappointed. Therefore, a decision was made to reintroduce the popular shape and at the same time bring it up to date. As these customers were almost all using the larger sizes we selected the ML, L, XL and XXL as the range that would be re-introduced as the T15 and they were to be made in the latest manufacturing process, which gives a perfect laminate of quality and consistency.

Each size was adapted to take account of the requirements to the modern requirement to use rib protectors and the full range of rigidities made available for both modern and historic karts.

KEY FEATURES

  • Super comfortable and supportive shape.
  • The best seat for a deep chested driver.
  • A slightly more upright 58° angle which suits Historic karts as with the older chassis it helps to get the weight off the rear axle.
  • A narrowback on the seat helps pro kart racers fit an XL, XXL seat between the engines.
  • Sizes designed to suit the larger drivers; ML, L, XL and XXL
  • Full range of rigidities available. T15VTi, T15VG, T15t and T15 standard.
  • For best results and driver safety we recommend pairing this seat with one of our Tillett P1 rib protectors.
  • Most chassis use a standard setup which includes additional upper seat stays. If these are not to be used, it is recommended to fit the TK7 Seat support plates on the main upper stay points. See recommended product list below.
  • Highly developed moulding technique, designed and manufactured in the UK with supreme accuracy.

Why Fit Matters

A proper fit is essential for driver protection and kart handling. A loose seat causes the driver to pull when steering, lifting themselves from the kart and creating instability.

Assessing Fit With a Seat

With rib protection worn, sit in the seat and check the gap at the leg bone, hip bone, and along the ribs. The rib protector shouldn’t compress inward when seated. You should barely fit your fingers between your body and the seat at any point. Pressure should be even throughout – nothing loose or pinching. Firm foam can correct minor looseness; pinching requires a different size.

Assessing Fit Without a Seat

Jeans waist size, weight, height, and chest circumference are reliable indicators. Note your rib protector type – thicker models can require up to two sizes larger and leave hips loose. Consider a slimmer protector or our WT (wide top) T11 seat to compensate.

Fitting the Seat

Half the kart’s weight shifted 5mm will affect balance. Average seat positions have moved roughly 3cm rearward since the late nineties. See our fitting guide PDF for detailed instructions.

Kart seat positioning 2025
Kart seat dimensions 2024
CHOOSING YOUR NEW KART SEAT NEW 2025

Product total
Options total
Grand total

View our full Kart Product Pricelist (.pdf)

Prices where listed exclude VAT & shipping.
Made to order in the UK – T&C’s apply.
Please contact Customer Service for delivery times.

Excellent

Trustpilot rating
Rated 4.9 out of 5 based on 73 reviews
Trustpilot Trustpilot