![Integrated Engineering HoldStrong Head Studs | B9 S4 · S5 · SQ5 · RS5 F26 X4 M40i 3.0L Turbo I6 [N55] Available with or without the](https://cdn.shopify.com/s/files/1/0635/0032/1015/files/IntegratedEngineeringHoldStrongHeadStudsB9S4_S5_SQ5_RS5.png?v=1748708953)
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Available with or without the matching direct-fit IE Cold Air Intake Kit
but it's not the whole story
6kg/mm (256lb/in) rated rears deliver a desirable 35mm to the vehicle
By eliminating the incredibly restrictive OEM F80 M3 and F82 M4 mid pipe
sandy areas
Integrated Engineering HoldStrong Head Studs | B9 S4 · S5 · SQ5 · RS5 F26 X4 M40i 3.0L Turbo I6 [N55] Available with or without theMeet your ultimate defense against head lift. iE HoldStrong Head Studs are engineered and manufactured for structural integrity to go toe to toe with the demands of high output engines. Theyre made to keep your engine together and sealed tight using a rolled thread process, chromium based H11 tool steel and aircraft grade J threads for maximum strength. Its not rocket science, but its close. Our chromium based H11 tool steel alloy is known for its use
