Banks Brake & SpeedBrake for 2004 - 2005 Chevy GMC 6.6L Duramax LLY.
The Banks SpeedBrake cuts downhill speeds by nearly 80% without using the brake pedal. Saves your wheel brakes, keeping
them cool and ready for emergencies. Dramatically reduces brake wear. And saves
thousands in brake maintenance! SpeedBrake's patented design lets you select
your downhill speed (anywhere from 25-75 mph), and then maintain that speed
automatically. It's like having exhaust brake cruise control!