The factory exhaust manifolds on your Gen 3 CTS-V are one of the first restrictions holding back your LT4. Speed Engineering's 2" longtube headers are a direct-fit, dyno-proven upgrade — mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel for maximum exhaust flow and over 25 rear-wheel horsepower over stock. Speed Engineering X-pipe kit is required for installation and sold separately.
Features:
- Full 2" Port-Matched Primary Tubes — Maximum flow from cylinder head to collector for aggressive LT4 performance
- 3" Collector — Optimized for strong low-to-mid RPM torque
- Mandrel Bent Tubing — Consistent tube diameter through every bend; no crimping, no restriction
- CNC Machined Flanges — Precision fit at the head and collector for a leak-free seal
- 304 Natural Stainless Steel Construction — Corrosion resistant, heat tolerant, and built to last
- Longtube Header Design — Maximum scavenging efficiency vs. shorty or mid-length headers
- Standard Graphite Manifold Gaskets Included
- Dyno Proven — 25+ RWHP gain on CTS-V LT4 applications
- Compatible with 6.2L LT4 Supercharged Engines
Vehicle Applications:
Cadillac CTS-V — LT4 6.2L Supercharged
- 2016 Cadillac CTS-V (RWD) — 6.2L LT4
- 2017 Cadillac CTS-V (RWD) — 6.2L LT4
- 2018 Cadillac CTS-V (RWD) — 6.2L LT4
- 2019 Cadillac CTS-V (RWD) — 6.2L LT4
FAQ
Is an X-pipe included with these headers?
No. These are headers only. The Speed Engineering X-pipe kit is required for proper installation and is sold separately.
What is the difference between this listing and the Gen 2 CTS-V X-pipe kit (25-1049)?
Part 25-1061 is the 2" longtube headers for the 2016–2019 Gen 3 CTS-V with the 6.2L LT4 supercharged engine. Part 25-1049 is the X-pipe kit for the 2009–2015 Gen 2 CTS-V with the 6.2L LSA supercharged engine. These are completely different engine generations requiring different components.
How much horsepower do these headers add?
Speed Engineering's 2" longtube headers are dyno proven to add over 25 rear-wheel horsepower on 2016–2019 CTS-V LT4 applications compared to stock exhaust manifolds.
What engines are these headers compatible with?
These headers are compatible with the 6.2L LT4 supercharged engine found in the 2016–2019 Cadillac CTS-V.
What material are these headers made from?
304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.
Are gaskets included?
Yes. Standard graphite manifold gaskets are included.
Are these headers street legal?
No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).
⚠️ Race Use Only: This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).