OS Giken's design allows for the fitment of more friction plates (up to 2x as many as competing versions)

which features large inlet/outlets in order to match the inner dimension of the CCV hose

- Lead-copper design for greater durability and easy tracking with oil analysis like Blackstone (recommended)

adjustment/removal of under seat ducting or wiring may be required if used on full-interior cars

4L BMW M20 Stroker Kit is specifically designed for increasing displacement in BMW M20 engines

5150 AutoSport High Performance Rod Bearing Kit, BMW S50B32 Sirius OS Giken's design allows forOur 5150 AutoSport Rod Bearing Kit is designed to be a significant upgrade from OEM bearings for your BMW S50B30 engine. This all inclusive package includes Calico coated rod bearings, ARP connecting rod bolts, and ARP assembly lubricanteverything you need for a reliable rod bearing replacement. Kit Contents: Calico Coated Rod Bearings ARP Connecting Rod Bolts ARP Assembly Lubricant Installation Instructions The Calico coated bearings provide