The NEW T15 kart seat explained by Steve Tillett

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.