Flowmaster American Thunder Cat-Back Exhaust System - 2-1/2 in Tailpipe - 3-1/2 in Tips - GM Fullsize Truck 2014-19 RS00400307 Uses Holley Water/Meth solenoids specially

Uses Holley Water/Meth solenoids specially designed and calibrated for use with this EFI system to allow the user to enter Water/Meth flow as a percentage of fuel injector flow for Water/Meth tuning precision unmatched in the industry

Inside is high density foam

Countless hours were spent developing and perfecting these kits to offer the utmost in strength and fit without adding unnecessary weight

Recommended for API SN/SM/SL/SJ/SH/SG/CF and ACEA A3/B3/B4

followed by the first injection molded truck fans in 1979

Flowmaster American Thunder Cat-Back Exhaust System - 2-1/2 in Tailpipe - 3-1/2 in Tips - GM Fullsize Truck 2014-19 RS00400307 Uses Holley Water/Meth solenoids speciallyFlowmaster's American Thunder cat back exhaust system for the 2014 2018 GM 1500 trucks (also fits 2019 classic models) is perfect for the person looking for an aggressive sound level inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster. This bolt on DOR DOS (Dual Out Rear Dual Out Side) emissions legal system, for the Crew Cab and Double Cab models with 4. 3L V6 or 5. 3L V8 engine, features a