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
Frequently Asked Questions:
Q: 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.
Q: Do I need O₂ sensor extensions? Yes. O₂ sensor extensions are required to complete installation and are sold separately.
Q: 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.
Q: 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.
Q: What material are these headers made from? 304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.
Q: Are gaskets included? Yes. Standard graphite manifold gaskets are included.
Q: 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).
