24 Needed Per Engine

(2) O2 Sensor Block Offs31

Stock valve springs are not engineered to handle the increased lift and RPMs demanded by high-performance BMW S54 engines

2007-2010     E82/E88     135i

Some common setups that have been proven to work well:

BMW M20 Stroker Kit | 5150 AutoSport | 3.3L 3.4L Compression Ratio:10.5:1 24 Needed Per EngineBigger displacement, more torque and more power: Our 5150 Autosport 3. 3L 3. 4L BMW M20 Stroker Kit is specifically designed for increasing displacement in BMW M20 engines. Utilizing CP Carrillo Pro Xtreme Forged Pistons and Manley Performance Connecting Rods, as well as the 5150 4340 Billet Steel Crankshaft, this BMW M20 Stroker Kit has stood up to the tests and trials of high horsepower application time and time again. We only sell you the products