haven't put too many miles, maybe 200, on my Circus Monkey road hub wheels. but i've got no complaints, in fact, the design of the rear hub is very good as regards maintenance. i can disassemble it without tools, and have done so to grease the freehub pawls (don't really care for the loud clicking), of which there are four. super light weight compared to any of the hubs i have on my other bikes. about 311gm for the pair. i would have to buy a 600 set of hubs to lower the weight by more than 20gms. i laced 24h carbon rims 2x. both front and rear.