Upgrade to 5150's Custom Age 625+ Head Stud Kit Built by ARP!
Upgrade to 5150's Custom Age 625+ Head Stud Kit Built by ARP!
Pair Your High Performance Valves with a Set of Upgraded Springs and Retainers!
Upgrade Your Factory Intake and Exhaust Valves
Two required per valve, necessary for use with certain supertech valves
This product was last offered at the strikethrough price on
03-04-2026
Two required per valve, necessary for use with certain supertech valves
Two required per valve, necessary for use with certain supertech valves
This product was last offered at the strikethrough price on
08-13-2026
2X Entries Into Our F80 M3 Sweepstakes
Quality retainers from Supertech
Quality retainers from Supertech
Quality retainers from Supertech
Two required per valve, necessary for use with certain supertech valves
Quality retainers from Supertech