17-18 KTM 250SX: Acerbis X-Seat (Standard) (Black/16+ Orange) After a month of testing by Yamaha Monster Racing Team MX1 riders, David Phillippaerts and Joshua Coppins, Acerbis is proud to introduce a completely new and revolutionary product: The X-Seat. Its light weight (1,450 grams) and comfort level, combined with an extremely high anti-slip grip, make this product indispensable for every rider. The Acerbis X-Seat debut set a new benchmark in the industry for its revolutionary design and technical features. Made entirely of one piece, the X-Seat has recently been updated and is now widely used by motocross and enduro riders who seek its lightness, exceptional durability, comfort and optimal grip. Fully external plastic shell with anti-slip grip.