COMP Cams® Evolution Hydraulic Roller Lifters are the first lifters EVER created using the newly patented Hydraulic Cartridge Technology (HCT)! This revolutionary design offers the most reliable performance of any lifters in the aftermarket. A combination of a self-contained hydraulic cartridge within a thick wall lifter body and accompanying reduced oil volume that is less affected by oil aeration delivers the most consistent bleed rates between each lifter.
The smaller volume within the hydraulic cartridge creates one of the most responsive and quietest lifters on the market today. Startup noise is greatly reduced and a precision-controlled bleed down rate ensures excellent performance at high RPM. The cartridge design allows for an incredibly stiff lifter body that greatly reduces body distortion and further ensures consistent hydraulic performance.
HCT and proprietary methods ensure unparalleled precision and longevity
Developed specifically to meet performance and durability demands of modern street/performance street engines
Hydraulic element is serviceable, allowing anyone to rebuild
Precision-controlled bleed down rate ensures excellent performance at higher RPM's
Comp Cams Evolution Retrofit Hydraulic Roller Lifters _ for Chevrolet Small Block _ Big Block _ 348/409 and LS Series Engines. For early model blocks originally equipped w/flat tappet cams. Tall body fits both standard blocks and tall lifter bore aftermarket blocks. LS are replacement lifters with no link bars.
Comp Cams Evolution Retrofit Hydraulic Roller Lifters _ for Chrysler Small Block _ Big Block _ and Gen III Hemi Engines. For early model blocks originally equipped with flat tappet cams. Gen III Hemi replacement with no link bars, with yokes.
Comp Cams Evolution Retrofit Hydraulic Roller Lifters _ for Small Block 289/302/351W and FE Series-429/460 Retro-Fit Roller Lifter. For early model blocks originally equipped with flat tappet cam.
