ARP Head Studs Mitsubishi Mitsubishi EVO Eclipse 4G63 7 Bolt 1993-2006 | 207-4203 vendor_Carrillo The Catback Adapter is not

The Catback Adapter is not a catalytic converter

5XT-R and is pre-calibrated to operate at 15 PSI unless otherwise specified

36 levels of dampening adjustment allow you to fine tune the ride to your handling and comfort needs

Full-metallic friction material

Display Style: Analog

ARP Head Studs Mitsubishi Mitsubishi EVO Eclipse 4G63 7 Bolt 1993-2006 | 207-4203 vendor_Carrillo The Catback Adapter is notARP 4G63T head studs feature an undercut design with 12 point nuts for optimal sealing and torque. Each ARP stud is made from 8740 alloy, rated higher than aircraft quality, and heat treated to 200,000psi. These studs are then centerless ground for perfect concentric design followed by thread rolling. In addition, ARP studs are undercut, which equalizes the stretch on the stud, making for more consistent clamping, and compensating for head gasket