you don't need to remove the bolt lock to do other engine work

these pistons are designed for drag racing

50mm Exhaust   Rally / Race  318° Intake / 318° Exhaust   12

16 x Switch inputs

prolonged engine life

5150 AutoSport Head Gasket & Head Stud Kit, BMW S65 Head Gasket Type - Bore - Thickness:MLS - 93 mm - 0.030" you don't need to removeMLS Head Gasket: The Cometic MLS Head Gasket is a high quality gasket designed specifically for the S65 V8 engines found in BMW vehicles. This gasket is intended to replace the original BMW part #11127841560, and is designed to provide superior sealing performance compared to other gaskets on the market. The gasket features a multilayer steel (MLS) construction, which provides increased strength and durability, as well as improved heat resistance and