Description
The MagnaFlow Street Series cat-back (part 19489) is made for the 2019–2026 Chevrolet Silverado 1500 and GMC Sierra 1500 (full list below). It brings out more of the engine’s character with MagnaFlow’s deep, resonant tone and dyno-proven gains. Expect an aggressive sound outside and moderate inside.
Why choose the MagnaFlow Street cat-back
Mandrel-bent 3.5-inch main piping runs through one straight-through muffler to a quad split rear exit with 3.5-inch polished, double-wall, angle-cut tips with folded edges, welded on. It replaces the factory system from the catalytic converter back, and MagnaFlow used 3D scanning during development for a direct fit.
Key features
- 3.5-inch mandrel-bent main piping
- One straight-through muffler
- Quad split rear exit
- 3.5-inch polished, double-wall, angle-cut tips with folded edges, welded on
- Street sound level: aggressive outside, moderate inside
- Cat-back layout, replaces the factory system from the catalytic converter back
- Direct fit, developed using 3D scanning
- Made with CNC robotic manufacturing
- MagnaFlow limited lifetime construction warranty and 1-year finish warranty
Fitment
- Fits the 2019–2026 Chevrolet Silverado 1500
- Fits the 2019–2026 GMC Sierra 1500
- Fits the 2022 Chevrolet Silverado 1500 LTD
- Fits the 2022 GMC Sierra 1500 Limited
- MagnaFlow part number: 19489
Please note: Please check the system complies with local noise regulations.
Supplied or fitted by Motorsport and Performance
We supply and fit MagnaFlow exhausts at our Leeds workshop. Want it done properly? Get in touch and we’ll book your car in, or help you check fitment before you order.

