Crower 74189B Features:

Crower 74189B billet steel shaft rockers for SBC PRO-FILER 13° 219X with 1.650 in. arm length Fits Small Block Chevy PRO-FILER 13° applications with 0.750 in. intake offset and 0.250 in. exhaust offset Stand ID number 012F with stand part number 74400X012F for matched shaft-mount valvetrain setup Steel-based rocker design delivers extreme rigidity and accuracy for racing, marine endurance, and high-rpm use

Billet Shaft Rockers Sb C SBC Pro-filer 13° Billet Features:

• Billet steel construction for extreme rigidity and valvetrain accuracy in SBC PRO-FILER 13° applications with 1.650 in. arm length
• 0.750 in. intake offset and 0.250 in. exhaust offset for precise rocker geometry on 219X cylinder head layouts
• Stainless steel shaft system resists high-heat strength loss for longer service life than comparable aluminum rocker arms
• Track-focused design supports quick installation and easier maintenance while improving valve control at elevated RPMs
• Stand ID 012F with stand part number 74400X012F; needle-bearing roller tip compatibility helps reduce friction and valve stem wear