Supertech retainers are constructed from military-grade Titanium alloy and CNC machined for a perfect fit

- Designed to withstand whatever you throw at it

- 50 Second Discharge

2016-2019     F22/F23     M240i

This high-performance head stud kit is designed to replace the factory head bolts BMW# 11127838831 and ensure your engine can withstand the extreme conditions of high-performance driving

BMW N63 S63 Connecting Rod Set by Manley H-Beam S85 Valves Supertech retainers are constructed fromAchieve superior engine performance with the Manley H Beam Connecting Rod Set, specially designed for BMW N63 and S63 engines. These 4340 forged steel rods are trusted in both street and track applications for their lightweight design and ability to handle extreme loads. Each rod measures 138. 5mm, perfectly matching the OEM dimensions for seamless installation. These rods are a direct replacement for BMW part #11247646892, #11247843237, #11247603480,