ManufacturerPart : 21199. From the market leaders and originators of No Drone Exhaust Technology, the CORSA Performance 2019+ Chevrolet Silverado and GMC Sierra catback exhaust systems feature CORSA's Reflective Sound Cancellation(R) (RSC) No Drone Technology and allows CORSA's acoustic engineers to create an aggressive yet drone free exhaust note, styled specifically to fit the personality of these legendary GM Trucks.
