ARP Main Studs + ARP 625 Head Studs.

Features of ARP Main Studs are as follows:

- Forged in-house at ARP using only the highest quality materials.
- Heat – treated to ensure optimum fatigue strength (Using special vertical racks to assure complete 360 degree penetration).
- Threads rolled after heat treatment to provide fatigue strength up to ten times longer.
- Precision CNC milling to an exact specification.
- Specially designed for optimum reliability in every application.
- For Mitsubishi Evo I - IX.

Features of ARP 625+ Head Studs are as follows:

- Forged in-house at ARP using only the highest quality materials.
- Heat – treated to ensure optimum fatigue strength (Using special vertical racks to assure complete 360 degree penetration).
- Threads rolled after heat treatment to provide fatigue strength up to ten times longer.
- Precision CNC milling to an exact specification.
- Specially designed for optimum reliability in every application.
- Increased washer diameter to spread out clamping area.
- For Evo model I - IX.

Stock images used. Actual product may vary.