BBM R/Z Roller Lifters - .903

The ISKY CAMS BBM Red Zone .903 Roller Lifters are a specialized hydraulic solution designed for high-performance Mopar B and RB-series engines, including the iconic 426 Hemi. This complete set of 16 hydraulic roller lifters ensures precise valve actuation with minimal friction loss, making them essential for builders aiming for consistent lift geometry and reduced parasitic drag in both street and competition applications.

The .903-inch bore diameter is engineered to maintain critical tolerances within the Mopar block casting, while the vertical link bar design provides lateral stability during aggressive valve events. The hydraulic roller design minimizes wear on cam lobes compared to flat-tappet alternatives, extending the service life of both the cam and lifters under sustained high-RPM operation. Each lifter in this set undergoes ISKY's stringent quality protocols to ensure bore consistency and proper fit, which are critical factors in preventing lifter noise and premature failure.

These lifters are ideal for restorers and performance enthusiasts who are rebuilding vintage B/RB-series Mopar engines or upgrading to hydraulic roller valve train configurations. Whether preparing an original 426 Hemi for reliable street use or maximizing flow in a dedicated competition engine, these lifters provide the precision valve control that performance builders demand.