‘- 6 For 7/16″ Bolt
– GM/Chevrolet 2-Piece Rear Main
– SBC/BBC Welded 168 Ring Gear

Made to Boninfante’s precise, unrivaled quality and safety standards featuring:
• One-piece design with integral ring gear
• Specially selected aerospace grade alloy steel from USA steel mills
• Proprietary 3-stage heat treating process
• Hard machined to exacting tolerances (.002 TIR)
• Boninfante’s proprietary stress proofing and finishing process
• Finished in a beautiful black oxide
• Tested to 20,000 RPM which exceeds SFI safety standard 29.2