Speed Engineering 1-7/8" Longtube Headers — 2004–2006 Pontiac GTO LS1/LS2 5.7L/6.0L | 25-1050 2001-ford-excursion-esi9404716 and ZR1 models

and ZR1 models

Type III hard coat anodized body

drive system and wiring harness that sets the industry standard

paired with threaded-body

No Velcro Or Stitching

Speed Engineering 1-7/8" Longtube Headers — 2004–2006 Pontiac GTO LS1/LS2 5.7L/6.0L | 25-1050 2001-ford-excursion-esi9404716 and ZR1 modelsThe factory exhaust manifolds on your GTO are one of the first restrictions holding back your LS1 or LS2. Speed Engineering's 1 7 8" longtube headers are a direct fit, dyno proven upgrade that frees up exhaust flow, improves throttle response, and delivers over 25 rear wheel horsepower over stock. Built from 304 natural stainless steel with mandrel bent primary tubes, CNC machined port matched flanges, and full TIG welded construction. Important: