Reviewed By rick t (WILMINGTON, NC) Reviewed for a 2002 GMC Sierra —12/6/2014 5:01 AM
They worked and sound great pick up my 1/8 mile speed 1 mile per hour to 84 mph not bad for a 5900lb truck ! Gain about 20 hp just changing to JBA headers.
Reviewed By Ryan C (Bozeman, MT) Reviewed for a 2014 GMC Sierra —10/24/2011 11:18 AM
Great look and cool sound in town!! However, the exhaust is rather loud on the highway or speeds over 50 MPH. I had it professional installed as well so it could be welded on rather then bolted (helps so it doesn't rattle off on a dirt road, sounds better, etc). Good bang for your buck as the muffler shop would not match their price.