Description: - ARP Custom Age 625+ Material
- 260,000 PSI Tensile Strength
- Chrome-moly Steel, 12-Point Nuts
- Parallel-Ground Washers Included
- Sold as a kit
- Made in USA
- For Competition Use
Description: - ARP 2000 Material
- 220,000 PSI Tensile Strength
- Chrome-moly Steel, 12-Point Nuts
- Parallel-Ground Washers Included
- Black Oxide Finish
- Sold as a kit
- Made in USA