MAP Ultimate Duty H11 Head Studs (Mitsubishi Evolution X)
H11 Ultimate Duty Evo X Head Studs
If you're looking to make big power (proven over 1000+whp) but don't like the idea of lifting your cylinder head and replacing head gaskets frequently these are exactly what you need! These studs are manufactured specifically for us by A1 Technologies and utilize an H11 material that is much stronger than the typical 8740 chromoly and yields a tensile strength of 260,000 psi.
They are also provisioned with a hex broach on the top of the stud enabling you to install them with the cylinder head on the car if necessary. The MAP Ultimate Duty Head Studs include an additional feature known as a "dog point" (shown below) that seats the stud in the block and preloads the fastener for an accurate and repeatable torque sequence. These studs paired with your choice of proven Cosworth headgaskets serve as a 1-2 knock out punch to keep the head on your high horse motor firmly seated where it needs to be!
- Sturdy H11 material
- Tensile strength: 260,00 PSI
- Hex broach for easy install
- Final torque 67 ft-lbs with provided lube
- Mitsubishi Evolution X 4B11T
- Suits all USDM / JDM / European Models
What's in the box?
- MAP Ultimate Duty H11 Head Studs
- MAP Warranty