Calibrated Power Stealth STR Turbo 04.5-10 GM 6.6L Duramax LLY/LBZ/LMM

Upgrade your Duramax with the Calibrated Power Stealth STR Turbo, designed for the 2004.5–2010 GM 6.6L Duramax LLY, LBZ, and LMM. This turbocharger is the ultimate replacement, blending affordability, reliability, and serious performance gains, all without the hassle of a core charge.

Engineered to support up to 650 RWHP, the Stealth STR features a billet aluminum 7x7-blade extended tip compressor wheel for massive airflow and a custom 10-blade turbine for peak efficiency and durability. The upgraded design improves throttle response, lowers EGTs, and prevents turbo surge, even under heavy towing loads. With its lightweight rotating assembly, you'll experience stock-like spool-up and lightning fast response, whether you’re cruising or pulling a trailer. This turbo is a direct bolt on replacement, so installation is hassle free, no tuning or custom mods are required, though it pairs perfectly with box tuners or custom tuning for maximum output. It’s built with brand new parts, including a 360-degree thrust bearing, ensuring long term reliability and performance.

Whether your truck is stock or modified, the Stealth STR Turbo is ideal for daily driving, towing, or pushing your rig to the next level. Reliable, efficient, and packed with cutting-edge tech, the Stealth STR delivers big power and drivability you can depend on.