M3_Power 636 Report post Posted June 3, 2018 (edited) Near new genuine M3 CSL air balance rail aka Map Sensor rail. powder coated in hell Green : P only used for about 2000km bare rail only NO sensor or mounting screws or bolts. $500 what you will get As new Edited June 5, 2018 by M3_Power Quote Share this post Link to post Share on other sites