OEM Length Replacement High Flow Up-Pipes

Features:

• Direct bolt-on replacement for factory pipes
• 46% larger flow area than stock
• Made from 11-gauge 304 stainless steel
• Internally sleeved stainless steel bellows
• Handles high temperature and pressure
• Includes 301 stainless steel gaskets
• Improves turbo spool and exhaust efficiency
• Durable, long-lasting construction
• Compatible with stock exhaust manifolds

Premium Up-Pipe Replacement Kit for GM 6.6L Duramax

If your factory up-pipes are showing signs of fatigue or you’re just ready for something that flows better and lasts longer, the PPE OEM-Length Replacement High Flow Up-Pipes are a smart move. Designed specifically for 2017–2025 Silverado and Sierra 2500HD/3500HD trucks with the 6.6L Duramax, this kit gives you a direct bolt-on upgrade with real performance benefits, without having to rework the rest of your setup. What sets these apart is the increased flow. PPE designed these pipes with a 46% larger flow area compared to stock. That added volume helps your turbo spool quicker, reduces exhaust backpressure, and contributes to cooler exhaust gas temperatures. Whether you’re towing heavy, running hard, or just want to give your truck a bit more breathing room, that difference in flow can have a noticeable impact.

304 Stainless Steel Construction with True OEM Fit

Durability is a major focus here. The up-pipes are built from 11-gauge 304 stainless steel, a tough material that holds up well under heat and stress. PPE also equips them with internally sleeved stainless steel bellows. These are built to flex with your engine’s movement while standing up to the kind of temperature swings and pressure spikes that would wear out stock components over time. Even better, this is a true OEM-length replacement. It bolts directly to your factory exhaust manifolds and turbo connection points without modification. The kit even includes high-quality 301 stainless steel gaskets, so you’re not stuck reusing old, worn-out seals during install. It’s a hassle-free way to get better performance and longer-lasting reliability.

Fits: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• Fits 2017–2025 Chevy Silverado and GMC Sierra 6.6L L5P
• Direct OEM-length replacement, bolts on with no mods
• 46% larger flow area than restrictive factory pipes
• Constructed from heavy-duty 11-gauge 304 stainless steel
• Internally sleeved bellows handle engine flex and stress
• Withstands extreme exhaust heat and high pressure
• Includes new 301 stainless steel gaskets for sealing
• Improves turbo spool, lowers EGTs, reduces backpressure
• Compatible with factory exhaust manifolds and turbo
• Built for long-term durability and reliable performance