this BMW S85 piston set features:

Thanks to our friends at NMK Performance Dubai for configuring our Link FURY ECU to activate the NOS solenoid at 3000 RPM and deactivate it at 4500 RPM

50mm Intake / 12

it is already coated with a silicone bead sealant

Step 3: Tighten Studs 1 through 10 to 75 ft-lbs

BMW S54 Cut Ring Head Gasket by Athena-SCE E46 M3 this BMW S85 piston setThis Athena Cut Ring Head Gasket is specifically engineered to replace BMW part 11127835918 for the BMW S54 engine. Factory OEM & MLS head gaskets are only engineered to handle a limited amount of cylinder pressures before they start to leak, causing a range of issues, including engine overheating, loss of power, misfires, and in severe cases, catastrophic engine failure. Athena SCE Cut Ring Head Gaskets are uniquely designed to handle increased