COMP Cams 85001-4 Evolution HCT GM LS/LT Drop-In Roller Lifter Set

The COMP Cams 85001-4 Evolution HCT Drop-In Roller Lifters are engineered specifically for GM LS and LT series engines, offering a direct factory-style replacement upgrade with significantly enhanced durability and performance. Featuring COMP Cams' proprietary High Chromium Technology (HCT) surface treatment, these lifters are designed to withstand the extreme pressures and temperatures of high-performance and racing applications.

Key Features:

• Direct Drop-In Fitment – Designed as a bolt-in replacement for GM LS and LT engine platforms with no machining required
• Evolution HCT (High Chromium Technology) – Advanced surface hardening process for superior wear resistance and extended service life
• Captured Roller Design – Precision roller wheel assembly reduces friction and improves valvetrain stability at high RPM
• Compatible with AFM/DOD Systems – Engineered to work with Active Fuel Management (AFM) and Displacement on Demand (DOD) cylinder deactivation systems
• High-Performance Construction – Premium materials and tight tolerances ensure consistent lifter bore engagement and reduced valvetrain noise

The COMP Cams Evolution HCT lifters are an ideal upgrade for street performance, street/strip, and track applications where stock lifters have proven unreliable. These lifters address the well-documented AFM lifter failure issues common in Gen IV and Gen V GM V8 engines, providing a more robust alternative to OEM components. MPN: 85001-4.