Jan 13, 2021 The glider market grew from a few hundred sales a year in 2010 to upwards of 10,000 as recently as 2017. Gliders sported pre-emissions-regs engines -- no exhaust gas recirculation or selective catalytic reduction components and, thus, no need for DEF. With simpler technology and refurbished engines, the products were much cheaper than new trucks with new engines, making them attractive buys for small-business truckers.Three years after emissions regulations took effect in January 2018 that severely restricted production of Class 8 glider kit trucks, there’s seemingly no options for owner-operators or small fleets to purchase a new glider kit. That includes buying straight from truck manufacturers or dealers for truckers who want to build and assemble their own glider truck.