Posted: September 12, 2016 in Kenworth

Glider kits will be almost outlawed by 2021 due to provisions of the federal Phase 2 Greenhouse Gas and Fuel Economy rules released earlier this month.  Starting in January of 2021 gliders will be only allowed for their original purpose, which was reclaiming late-model powertrains from wrecked trucks.  This goes back many years, to when glider kits were bought as service parts.  Today, truck builders produce glider kits for assembly by individuals and commercial concerns.  Though they make up a small percentage of total new truck sales, gliders produce far more exhaust emissions.  The EPA became concerned after a surge in sales from a few hundred per years 20 years ago to more than 20,000 in 2015.  Most of those were high-mile highways trucks with older engines that spew many times more exhaust emissions than new engines.  “Although glider vehicles make up only 5% of heavy-duty tractors on the road, their emissions would represent about one-third of all NOx and PM emissions” the EPA said.  Instead of abruptly outlawing them, however, the new rules will phase out gliders over the next four years.


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