Compared to OEM bearings

either 85mm or 85

making them ideal for forced induction and racing applications

Custom CAN configuration for expanded compatibility

consistently outperforming competitors on both the track and the street

BMW N63 S63 Block Sleeving Service 11247646892 Compared to OEM bearingsBMW N63 S63 Engine Block Sleeving Service: Power and Reliability TOGETHER!! Why Choose Engine Block Sleeving: The truth is, Alusil factory does not stand up to the demands of high performance applications. If you're looking to push your BMW's performance limits, you need a solution that provides not only increased strength but also the versatility to bore and hone the block to your desired specifications. Our heavy duty iron sleeves offer the