BLOX Racing is proud to offer its Performance DIY product line for today’s growing Do-It-Yourself fabricator. Whether you are just learning to fabricate and weld or you are a seasoned veteran, BLOX Racing can supply your needs.The BLOX Racing merge collectors are a perfect choice of fabricators when building a custom exhaust header or turbo exhaust manifold.Small and large sizes are available in welded and non-welded units.SpecificationsLENGTH: 3”ID: 1.7”WALL THICKNESS: 0.1”