JBA Performance Exhaust Cat4ward Headers - 1.625 in Primary - 2.5 in Collector - GM LS-Series - GM Fullsize SUV / Truck 2014-17 1850S-4JS - Pair 31013BL 480 to 1 Ratio

480 to 1 Ratio

Billet stock style neck that accepts the stock cap

Threaded straight stem-type shock end

Cleco pins are reus-able and easily make a temporary connec-tion between pieces of sheet metal during fitting

JBA Performance Exhaust Cat4ward Headers - 1.625 in Primary - 2.5 in Collector - GM LS-Series - GM Fullsize SUV / Truck 2014-17 1850S-4JS - Pair 31013BL 480 to 1 RatioWhen it comes to performance exhaust systems, most people are looking for three things: power, sound, and quality. JBA exhaust systems deliver the best of all three, giving them both great looks and performance. One of the first performance upgrades typically made to a vehicle is the addition of a performance exhaust system. While there is a high demand for performance sound, the capacity for power in the JBA exhaust systems gives JBA the extra edge.