Crower 74197F Features:

Crower 74197F shaft rockers for SBC Brodix 1-way tech heads with 21X 60-80 valve spacing Includes a 5/8 in. shaft for added valvetrain stability in high-performance and racing applications Geometry measurements: 1.480, .550, and .100; uses 022F stand configuration, Part 74400X022F CNC-machined from ball race alloy steel, double heat-treated, and micro-finish ground in-house

Shaft Rockers Brodix/1 Wa 5/8 In. Shaft 21X 60-80 Features:

• Precision-fit for Brodix 1-way tech heads, 21X 60-80 valve spacing, optimized shaft-rocker geometry for accurate valvetrain motion
• Heavy-duty 5/8 in. shaft design for added rocker stability, reduced deflection, and improved control in high-rpm racing use
• CNC-machined ball race alloy steel construction, double heat-treated and micro-finish ground for long-term wear resistance
• Uses 022F stand configuration with 1.480, .550, and .100 geometry dimensions for application-specific valvetrain fitment
• Upgradeable with needle-bearing tips, DLC-coated pins, or bushed pins for reduced friction, lower heat, and tuning flexibility