Original BMW exhaust studs can be tricky to tighten due to not having a hex drive or a torx head used to tighten into the head in spec. Our stud kit is the solution! We have been using these studs for engine rebuilds at our shop and are happy with the results and ready to offer them as a product. 
 
This stud kit comes with a full set of 12 hex driven studs that make installation into your engine much easier. We also include a set of 12 copper flanged high temperature nuts to reduce the chances of seizing under heat cycles. 
 
This stud kit will work on M20 and M30 engines.