Merchant 930029875 De-Lipped Motorsport Piston Kit | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features:

• Fits 2001–2016 6.6L Duramax engines
• Designed for GM 2500HD and 3500HD trucks
• De-lipped design increases piston strength
• Manufactured by Mahle for trusted performance
• Phosphate coating reduces wear during break-in
• Protects against ring micro-welding
• Minimizes pin galling at startup
• Ideal for high-performance diesel builds
• Cast construction for OEM-level durability
• Drop-in replacement for factory piston sets
• Improved reliability under heavy load stress
• Engineered for street and race applications

Push Your Duramax Build Past The Breaking Point

If you're chasing power and reliability in your Duramax, the Merchant 930029875 De-Lipped Motorsport Piston Kit is the upgrade your build deserves. Whether you're daily driving a tuned street truck or building something serious for competition, these pistons give you the edge where it counts. The de-lipped design is a proven solution for eliminating the common failure point at the lip of factory pistons, especially in high-boost and high-stress setups. You’ll gain peace of mind knowing these pistons are engineered to take abuse without flinching. Merchant teamed up with Mahle to produce a piston that blends OEM-level durability with motorsport-ready strength, so you don’t have to compromise between performance and longevity. These are built for trucks that tow, race, or just like to play hard. From weekend warriors to full-on sled pullers, this kit is for diesel owners who demand more than what stock can handle.

Precision Coatings And Design Built To Withstand Abuse

Under the hood, these pistons are all business. Crafted by Mahle and backed by Merchant’s performance insight, this kit features cast aluminum construction and includes a phosphate dry lubricant coating to prevent micro-welding and pin galling during startup and break-in. That means fewer headaches, less friction, and smoother operation right from the first fire-up. The de-lipped crown design removes the fragile edge found in stock pistons, reinforcing the area most prone to cracking under extreme combustion pressure. This makes the kit ideal for high-output Duramax builds running elevated boost levels or aggressive fuel tuning. The pistons are drop-in replacements for 2001–2016 6.6L Duramax engines, covering a wide range of Silverado and Sierra HD models. Whether you’re building for the street, track, or pulling circuit, this piston kit helps ensure your bottom end can take the punishment. It’s a smart investment if you’re serious about pushing your Duramax without blowing it apart.

Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• Designed for 2001–2016 GM 6.6L Duramax engines only.
• De-lipped design eliminates common factory piston failure points.
• Recommended for performance builds or high-boost applications.
• Phosphate dry lubricant coating helps reduce startup wear.
• Not compatible with aftermarket rods without checking clearance.
• Professional installation is recommended for optimal results.
• Engine block prep and piston-to-wall clearance should be verified during install.
• Ideal for sled pulling, drag racing, and heavy towing builds.
• Mahle is the OEM manufacturer, ensuring consistent quality and fitment.
• May require supporting upgrades such as forged rods and balanced rotating assembly.