Right around 100 runs. This was my first year with them. I spent a fair amount of time researching for rods for my motor. Although the BME's worked excellent I felt 300 passes was a good number for replacement. I had absolutely no issues with them. Unfortunately my budget is hard pressed to purchase a $1200 set of rods every 300 runs. I have a Mega-Block and do not want to hurt it. I felt the Molnar's were a good compromise, time will tell. Also anyone interested in Aluminum rods to talk to Bill Miller. Both Bill and Tom spent time teaching me about the benifits of their style rods. Both good guys in my book.
Doug