Connecting your Speed Engineering longtube headers to the cat-back on your GMT800 Silverado or Sierra? This is the Y-pipe that completes the system. Built from 3" mandrel bent 304 natural stainless steel with TIG-welded construction and stainless steel band clamps included.
Revised Y-Pipe: This updated design now works with 4L60E and 4L80E transmissions using the factory pan and allows additional clearance room for 4WD vehicles.
⚠️ Important Notes:
- Designed to work with Speed Engineering longtube headers only — NOT compatible with factory exhaust manifold equipment
- Most 6.0L applications use a 2-into-1 exhaust system — this Y-pipe will NOT work with that configuration. Verify your exhaust has a single (not 2-into-1) configuration before ordering. The Speed Engineering X-pipe kit can work with 2-into-1 systems but requires fabrication for connection
Features:
- 3" Mandrel Bent Tubing — Consistent diameter throughout for maximum exhaust flow
- Revised Design — Compatible with 4L60E and 4L80E transmissions using the factory pan
- Improved 4WD Clearance — Additional room for 4WD vehicle configurations
- Stainless Steel Band Clamps Included
- 304 Natural Stainless Steel Construction — Corrosion resistant, heat tolerant, and built to last
FAQ
Will this Y-pipe work with my factory exhaust manifolds?
No. This Y-pipe is designed for use with Speed Engineering longtube headers only and is not compatible with factory exhaust manifold equipment.
Will this Y-pipe work with my 6.0L truck?
It depends on your exhaust configuration. Most 6.0L applications use a 2-into-1 exhaust system, which this Y-pipe will not work with. Check your truck's exhaust configuration before ordering — if you have a single exhaust setup, this Y-pipe will work. If you have a 2-into-1 system, consider the Speed Engineering X-pipe kit instead, which can work with 2-into-1 systems but requires fabrication for connection.
Does this Y-pipe work with my transmission?
Yes. This revised Y-pipe design works with both 4L60E and 4L80E transmissions using the factory pan.
Does this Y-pipe fit 4WD trucks?
Yes. The revised design provides additional clearance room specifically for 4WD vehicle configurations.
What size tubing does this Y-pipe use?
3" diameter, mandrel bent for consistent flow throughout. Stainless steel band clamps are included for installation.
What material is this Y-pipe made from?
304 natural stainless steel with mandrel-bent tubing and TIG-welded construction.
Is this Y-pipe street legal?
No. This is a race-only product 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).
