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Supplier details checked 2026-09-23 · Test catalog
Fits 2019-2026 Chevrolet/GMC Silverado/Sierra 2.7-Liter, Cat-Back, Dual Out Rear/Side Exit, Stainless Steel Exhaust System
Flowmaster American Thunder Cat-Back Exhaust System
Dual 2.50-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
50 Series Big Block performance muffler delivers a deep, moderate performance tone and improves exhaust flow
Includes complete hardware and factory styled hangers in the stock locations for an easy installation
Dual 3.50-inch polished tips exit dual out the rear or side for a custom look
Gain up to 4 hp and 11 lbs-ft of torque at the rear wheels
Flowmaster’s Lifetime Limited Warranty
Fits 147-inch and 157-inch wheelbases
Fits 2019-2026 Chevrolet/GMC Silverado/Sierra trucks with 2.7-liter engines, 2 & 4-wheel drive. Does not fit models with the Multimatic suspension option.
Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
1925 GM 1500 TRUCKS 27T AMT DORS
SYS 19-25 GM 1500 TR
This Flowmaster® American Thunder® cat-back exhaust system for the 2019-2026 Chevrolet/GMC Silverado/Sierra with the 2.7-liter engine is manufactured using durable 409 stainless steel throughout and features dual 2.50-inch mandrel bent pipes for better exhaust gas flow, and an American Thunder muffler is used for a moderate sound level and maximum performance. Gain up to 4 hp and 11 lbs-ft of torque at the rear wheels over stock. This system exits dual out the rear or dual out the side, with dual 3.50-inch polished tips for added style and a custom look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.
SYS 19-25 GM
