The Speedmaster 1-261-021 Shaft Mount Roller Rocker Arm Kit is designed for Ford FE 390, 427, and 428 engines. Manufactured from heat-treated aluminum, these rocker arms feature a full roller design with precision components for improved durability and valvetrain performance.

Speedmaster 1-261-021 Roller Rocker Arms Features:

• Ford FE 390 427 and 428 application
• Shaft mount rocker arm design
• 1.76 rocker arm ratio
• Full roller rocker design
• Heat treated aluminum construction
• Black anodized finish
• Self aligning design
• Includes shims
• Oversized needle roller bearings
• Optimized load distribution geometry
• Supports high spring loads
• Sold as a complete kit