COMP Cams® LST™ Camshafts for GM 6.6L Duramax Diesel Engines

COMP Cams® expands its GM 6.6L Duramax Diesel camshaft selection with the addition of LST™ (Low Shock Technology) lobes in order to create greater power potential and increased valve train durability.

The LST™ Camshaft Series uses the newest and most advanced lobe designs from COMP Cams®. These new lobes provide the potential for major increases in power and torque in Duramax engines when combined with the appropriate tuning. The “Low Shock Technology” features lobe profiles designed to maximize additional engine airflow, which reduces harmful EGTs, while improving stability at higher RPM. These profiles are also easier on the valve springs, enhancing durability and reducing load loss.

Organized into stages that allow you to choose your level of performance, Stage 1 Camshafts are No Springs Required and run well with the factory or a performance tune. Stage 2 and 3 camshafts require a COMP Cams® #26125 Beehive™ Valve Spring Kit upgrade but do produce the greatest potential for additional power and RPM when matched with maximum effort tuning.

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About COMP Cams®

Founded in 1976 and based in Memphis, TN, COMP Cams® has become the automotive performance aftermarket’s “Absolute Leader in Valve Train Technology.” Our mission is to produce the highest-performing products possible, provide superior customer service and lead the industry in technological development.

Additional information about COMP Cams® and its products can be found at or by calling 1.800.999.0853 open M-F 7am-8pm CST. You can also visit us on Facebook (, Twitter (, Instagram ( and YouTube (