ARP Main Studs Bolt Kit Scion FR-S 2013-2016 / Subaru BRZ 2013-2020 / Toyota 86 2017-2019

Upgrade your engine's strength and reliability with ARP Main Studs Bolt Kit - expertly designed for competition engines and professional builders. These application-specific main bolts are forged from high-strength chromoly steel and feature a reduced wrenching head and rolled threads for maximum durability. With a 190,000 psi rating and hardened parallel-ground washers included, this kit delivers superior fatigue cycle life and resistance to corrosion and oxidation. Trust in ARP's proven quality with each stud heat treated and thread-rolled to provide 200,000 psi and 1000% better fatigue strength. Elevate your engine's performance with ARP Pro Series main bolts!

• Includes (10) head studs (long)
• Includes (4) short studs
• Includes (10) washers
• includes (1) ARP Ultra-Torque fastener assembly lubricant
• Socket Size(s) 12mm 12pt, 10mm 12pt
• Location: Mains
• Material: 625+ Tool Steel
• Resonated: Yes