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Supplier details checked 2026-09-23 · Test catalog
Fits 2017-2026 Ford F-250/F-350 Super duty 6.2L/6.8L/7.3L V8 Flow FX 3.5" Cat-Back, Single Side Exit, Stainless Steel Exhaust System
Flowmaster Flow FX Cat-Back Exhaust System
Flow FX “straight through” performance muffler delivers a deep, moderate performance tone and improves exhaust flow
3.50-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
Includes complete hardware and factory styled hangers in the stock locations for an easy Installation
Max increases of up to 7 hp and 12 lb-ft over the stock exhaust at the rear wheels
5.00-inch black ceramic coated tip adds a custom look to the truck
Backed by Flowmaster’s Lifetime Limited Warranty
Fits 2/4 Wheel Drive and All Wheelbases
Flowmaster 17-25 SuperDUTY 6.2/6.8/7.3L FlowFX Cat-Back Exhaust System
1725 SUPERDUTY 626873L FFX CB SOS
SYS 17-25 SUPERDUTY
This Flowmaster® Flow FX® cat-back exhaust system for the 2017-2026 Ford F-250/F-350 Super Duty trucks with the 6.2L, 6.8L or 7.3L-liter engines is manufactured using durable 409 stainless steel throughout and features 3.50-inch mandrel bent pipes for better exhaust gas flow, and a Flow FX "straight-through" muffler is used for a moderate sound level and maximum performance. Maximum increases on the dyno revealed +7 hp and +12 lb-ft at the rear wheels. This system exits out the side, behind the rear wheel with a 5.00-inch black ceramic tip 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 17-25 SU
