Decent, very vfm for their price, anyone with serious demands, like downhill etc. where a lot of heat is generated from friction or continuous braking should not get them. This happens because their pistons are made of resin and will start to melt. For the same reason, it doesn't take metallic pads, the manual only recommends resin. It is also recommended for up to 180mm discs. For XC use or simple use in the city, I would say it's more than enough.