Install was not too bad, tight but movable to fit.The plastic is nice on 2 levels, no noice on frame rattle and the plastic should glade off rocks versus sticking as aluminum can.
The tightness on the linkage gaurd is wierd to me. Over time we will see how strong it holds up.
Can't give a 5 star as I haven't road bike. Just installed it but based on product it will probably be a star