Replace the lightweight, leak prone, 1 5/8" OEM up pipes with these heavy duty 11 gauge 2" Stainless up pipe kit. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo spoolup and decrease EGT's. This kit is for use with single turbo applications and factory exhaust manifolds.
NOTE: These up pipes ONLY fit with OEM exhaust manifolds or WCFab Duramax Billet Exhaust Manifolds (WCF100363).
***Designed for use with WCFab down pipe. OEM and other aftermarket down pipes may require additional modifications***