DescriptionThis ARP Head Stud Kit from RK Autowerks delivers extreme clamping strength for your S63 engine platform. Designed to prevent head lift under high boost, it’s a trusted solution for high-performance BMW V8 builds pushing well beyond factory limits.Key Features:• Withstands extreme cylinder pressures — 260 ksi tensile strength (Custom Age 625 )• Direct-fit stud replacement for factory head bolts• Includes ARP nuts, washers, and lubricant• Supports high-boost and fully built S63 engine applications• Manufactured by ARP, trusted and used in competitive motorsportCompatibility:• F10 M5 (2012–2016)• F90 M5 (2018 )• F06/F12/F13 M6 (2012–2018)• F15 X5M / F16 X6M (2015–2018)• F85 X5M / F86 X6M (2015–2018)• F95 X5M / F96 X6M (2020 )Installation Notes:Requires cylinder head removal for installation. Professional installation is strongly recommended. RK Autowerks can assist with installation or guidance.Sold and Supported by RK Autowerks:This kit is fulfilled and supported by RK Autowerks. Manufactured by ARP to RK’s specifications using Custom Age 625 material for S63 applications.Warranty:RK Autowerks Warranty And Legal