Seller notes

Circuit Werks replacement Up-Pipes for the 2001-2016 GM 6.6L DuramaxA stock Duramax can produce high temperatures and pressures that cause OEM up pipes eventually fail from constant temperature and pressure fluctuation. Circuit Werks Up-Pipes allow 53% greater flow over stock, and are a direct bolt-on to your factory manifolds. Uses stock exhaust manifolds and hardware.FEATURES: Bolt-On Replacement (Non-EGR) Faster Spool-Up & Increased Performance Increase flow and reliability. Significant Reduc...

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