Banks Power 04-05 Chevy 6.6L LLY Banks Speedbrake (w/ iDash 1.8) - 61431

The World's First All-Electronic Braking System. Cuts downhill speed up to 78 percent. All automatic, user selectable speed. Simple plug-n-play installation, no cutting or welding required. Extends the service life of your brakes, and does so while maintaining your sanity.