Bull Boost Performance™
Bull Boost Performance is here to provide the best products and quality customer service to all of our customers, we offer one of the best prices on eBay. Many competitors will offer much lower prices but at the cost of quality of the product. We dedicate the time and energy to inspect every single item before shipment to customers, though mistakes are inevitable; we offer quick response customer service on any of your concerns about a product your interested in or have received. 

Reference part number : 260‑4701
Material: 35CrMo
Quenching: Grade 12.9
Tensile strength: 1200Mpa about 174000PSI
Finish: Blackening
Fitment:
Fits All Subaru SUBARU IMPREZA WRX & STI TURBO EJ20 2.0L and EJ25 2.5L DOHC Turbo Engines.
Kit comes with all：
11mm head studs*12psc
washers*12psc
nuts*12psc
 
Feature:
Cylinder Head Stud Kit Replacement,Ample clam force prevents cylinder heads from rising, adopt openwork bolt ends install and make cylinder head easier to remove.Built to meet standard specification, strictly follow factory quality control.
All bolts are heat treated and feature laminated threads, the bolts make the gasket and cylinder head alignment snap on.
It is manufactured according to the original factory standards and is very suitable for your model.Please confirm your model before purchase.
Cylinder Head Stud Kit Replacement,Ample clam force prevents cylinder heads from rising, adopt openwork bolt ends install and make cylinder head easier to remove.Built to meet standard specification, strictly follow factory quality control.