Here, you are looking at the ARP Extended wheel studs for the BRZ / 15+ WRX models.
ARP’s heat-treated 8740 chrome-moly wheel studs are a much-needed replacement for any car engaged in autocross, track, or drag racing. They have a tensile strength of 200,000 psi and are able to easily handle the tremendous acceleration shock loads (shear) and lateral forces (elongation) found in racing. The studs are sold in packs of 5 and are cadmium plated for extra durability. Nuts not included.
An extended stud such as this is a necessity if you will be running a slip-on spacer of more than 5mm.
Details:
| Knurl Diameter | 0.565˝ |
| UHL | 2.535˝ |
| Knurl Length | 0.270˝ |
| Nose Length | 0.200˝ |
| Thread Size | M12 x 1.25 |
| Wheel Stud Hole Size - Cast Iron/Steel Hub | 0.549˝ - 0.559˝ |
| Cast Iron/Steel Hub Drill Bit Size (actual dim.) | 14mm (0.551˝) |
| Wheel Stud Hole Size - Aluminum Hub | 0.549˝ - 0.555˝ |
| Aluminum Hub Drill Bit Size (actual dim.) | 14mm (0.551˝) |