...and almost anything else for M5 or M6, M635CSi cars. Performance and replacement parts for S38 and M88 engines found in E24 M6/M635CSi, E28 M5, and E34 M5
NEW! Get free horsepower with our secondary air plates
Our reversible system of "deleting" the secondary air system on S38B36 and S38B38 engines is an easy and convenient way to free up revs and horsepower!
