Replace the lightweight, leak prone OEM up pipes with this heavy duty 11 gauge 2" Stainless up pipe kit. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo spool-up and decrease EGT's. This kit is for use with twin turbo applications and factory exhaust manifolds, they WILL NOT clear a conventional down pipe routed behind the engine. Both sides are built nearly symmetrical with no indents for a conventional down pipe to clear. No EGR Provisions, for Off Road Competition Use Only.