Roller Lifters - BBM 426 Hemi/440B

CROWER Roller Lifters for BBM 426 Hemi and 440B engines represent severe-duty mechanical roller valve lift technology engineered for high-performance big-block Mopar applications. This 16-piece set features a 0.903-inch outer diameter design with integral link bar construction, delivering the precise valve actuation required in competition and extreme duty builds where reliability under sustained high RPM operation is non-negotiable.

Roller lifters reduce friction losses compared to flat-tappet designs, allowing valvetrain components to maintain consistent timing throughout the engine's operational range. The 0.903-inch OD specification is critical for proper bore clearance in B and RB-series Mopar blocks, and the link bar configuration ensures synchronized lift across the entire valve train. These lifters are purpose-built for severe duty applications where cutaway designs prevent oil starvation and enable consistent lubrication during aggressive cam profiles and extended high-load cycles.

Builders restoring or modifying 426 Hemi and 440B engines select mechanical roller lifters when moving beyond stock components to support higher lift cam profiles and tighter valve timing events. The complete 16-piece set supplies lifters for the full valve complement, simplifying parts procurement for those undertaking comprehensive valvetrain upgrades. Compatibility with Mopar B-series and RB-series block architectures makes this set a practical choice for street, strip, and specialty engine builds requiring proven roller valve lift technology.