My Silca Impero pumps still work fine but 65lbs maybe 75lbs tops. It gets me home but that's about it. My Zefal HP pumps are definitely better and can easily pump 80-90 lbs. The Silca pumps are on the bikes and are original matching pumps but I really should overhaul them , maybe it would change my opinion of them . Both work ! Joe joesvintageroadbikes.wordpress