Looking to free up exhaust flow on your CT5-V Blackwing? Speed Engineering's 2" longtube headers are mandrel bent, TIG-welded, and CNC-machined from 304 natural stainless steel for maximum exhaust flow and over 25 rear-wheel horsepower over stock. These are headers only — this is not a direct bolt-on installation. Fabrication of connection pipes is required for proper fitment on the CT5-V Blackwing chassis, and O₂ sensor extensions are needed to complete installation.
⚠️ Important Installation Notes:
- Fabrication of connection pipes is required — these headers are NOT a direct bolt-on on the CT5-V Blackwing. Custom connection pipes must be fabricated for proper fitment
- O₂ sensor extensions are required — 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 cylinder head 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 LT4 applications
- Compatible with 6.2L LT4 Supercharged Engines
Vehicle Applications:
Cadillac CT5-V Blackwing — LT4 6.2L Supercharged
- 2022 Cadillac CT5-V Blackwing — 6.2L LT4
- 2023 Cadillac CT5-V Blackwing — 6.2L LT4
FAQ
Are these headers a direct bolt-on?
No. These headers are NOT a direct bolt-on for the CT5-V Blackwing. Fabrication of custom connection pipes is required for proper installation on this chassis.
Do I need O₂ sensor extensions?
Yes. O₂ sensor extensions are required to complete installation and are sold separately.
How does this CT5-V Blackwing listing differ from the CTS-V listing (25-1061)?
Both are 2" longtube headers for LT4-powered Cadillac sedans — the CTS-V version is designed for the 2016–2019 Gen 3 CTS-V and may have a more direct fitment path. The CT5-V Blackwing application specifically requires fabrication of connection pipes due to the different chassis layout of the 2022–2023 CT5 platform.
How much horsepower do these headers add?
Speed Engineering's 2" longtube headers are dyno proven to add over 25 rear-wheel horsepower compared to stock exhaust manifolds on LT4 applications.
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).