T11

The T11 kart seat is a World Championship winning product.

The T11 shape is the most popular for adult sized karts, typically used by manufacturers and professional kart racing teams.

This model has a flat base and a mid-angle reclined back. This design was created to position the driver lower in the kart whilst allowing a more powerful upright shoulder turn, giving the driver more control.

For drivers with a long torso, the T9.5 is further reclined.

KEY FEATURES

  • The T11 model has a flat base and a 58° reclined back for a lower seating position.
  • Approximate weight 1.4kg.
  • Made with high strength resin.
  • Wide range of sizes available to order.
  • Used by professional teams and manufacturers.
  • Highly developed moulding technique, designed and manufactured in the UK.
  • Made to order in our UK headquarters.
  • For best results we recommend pairing this seat with one of our Tillett P1 rib protectors, see optional product list.
  • 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.

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