Recommendation: I've had these on my bike a little over a year (20mm TA front, 135mm rear)with many dusty and even wet miles without problem. I recently took the rear apart to install the 36 tooth ratchets and boy what a world of difference that made! I've had them sitting on my bench for the better part of a year and just didn't bother to put them in. Wish I would have done it sooner, I had them appart and installed in 15 minutes, but it would have taken me less time if I wouldn't have stopped to take pictures and video!
Pros: Servicability, options, durability
Recommendation: I've had these on my bike a little over a year (20mm TA front, 135mm rear)with many dusty and even wet miles without problem. I recently took the rear apart to install the 36 tooth ratchets and boy what a world of difference that made! I've had them sitting on my bench for the better part of a year and just didn't bother to put them in. Wish I would have done it sooner, I had them appart and installed in 15 minutes, but it would have taken me less time if I wouldn't have stopped to take pictures and video!