I did Cannall Medow Trail from Sherman's Pass for a 25 mile trail ride. There were 2 sections longer than 2 miles each of rock gardens with rocks being as small a a foot ball to as large as a TV. At the end of the ride was 9 miles of fast technicial single track downhill. At no time did I feel any loss of stopping power even with the high heat from frequent usage and I am a heavy rider (225lbs plus gear).