Designed to fit with aftermarket bumpers, MagnaFlow high clearance design for off-road rock crawlers melds quality with durability. Mandrel-bent tubing and a perforated steel core boost exhaust flow and the parts are dyno proven to produce maximum power. Rock Crawler Series Cat-Back Exhaust System ; 2.5 in.; Incl. Tubing/5x5x14x20 in. Muffler/Ext. Pipe/Tailpipe; No Tip Incl.; Single Straight Driver Side Rear Exit; Stainless; The Rock Crawler Series Series Exhaust System delivers a high clearance design for off-road rock crawlers in need of quality, durability and performance.