The base material for NEK’s best-selling seat, the Modulate, is the 500 gramme per square metre fibreglass composite. Obviously, the layers change depending on the hardness, which ranges from Standard, the most flexible, to Hard (HD) to Hard + (HD+). The latter, in particular, features a special solution with rope running along the entire edge of the seat. Twill 3K carbon fibre inserts are added to the fibreglass base, as if to form a single component. They have two basic functions: to control the torsion by stiffening the seat only where it counts, for better performance, and to strengthen the areas under the greatest stress, such as the back (often perforated to mount the support attachments for the engine cooling water pipes) or the sides at rib height (perforated for the attachment of the seat support brackets).