CNC machined in-house at RK’s Texas facility and made from heat-treated 4130 Chromoly steel

and they have proven to be a top performer in both street and racing Toyota 4AGZ engines

7 mm Stroke

is designed for the turbocharged inline 6-cylinder BMW B58 engine

Whether you're tuning for the track

5150 AutoSport Head Gasket & Head Stud Kit, BMW S54 Head Stud Kit:ARP2000 CNC machined in-house at RK’sCut Ring Head Gasket The SCE Cut Ring Head Gasket is a direct replacement for BMW part #11127835918, designed for the S54 inline six engine. Standard OEM and MLS gaskets can only withstand limited cylinder pressure before leaking, making this gasket ideal for applications exceeding 16+ psi. A failing head gasket can cause overheating, power loss, misfires, or catastrophic engine failure. This gasket is made from high quality reinforced M0115 material,