B&B Exhaust System for the H1 Hummer is an after-cat exhaust with a 5.25 inch oval tip for the 1996-2001 Hummer H1. Manufactured from 100% T-304 stainless steel with tig welding and mandrel bent tubing, the B&B Exhaust System for the H1 Hummer offers exceptional flow and increased performance. This exhaust system is a bolt-on installation with no welding or cutting for a perfect fit!
Since 1989 Billy Boat Performance Exhaust has designed, tested, and manufactured the highest quality stainless steel exhaust systems available. Originally specializing in Porsche 911 performance exhaust systems, oil coolers, and intercoolers, B&B introduced the Tri-Flo line named after its unique 3-into-1 Porsche header. Today in its state-of-the-art facility, Billy Boat continues to develop the highest performing exhaust systems for most sports cars, trucks, and SUVs. With an in-house dyno facility and R&D staff, we stay on top of current vehicle trends and deliver products that fit and perform to an unsurpassed level of standards.