I went ahead and replaced the left front as they were in real bad shape??? The right was only about 1 mm off of original, and still in good shape. Having a Trike I don't use the Front brakes that much at all. The link system applies the left front also with the rear. I don't know if they had ever been changed or not before I bought it as a Trike. I have put a little over 20 K on it the time that I have had it. The clock is at 43 K now, so I am assuming that they haven't been replaced in the past life. I was able to get a short and cold test ride in Thursday, and of course it is way to soon to tell how they will last but it stops much better than it did that I do know. I wouldn't think that Hal would be offering them if they weren't of at least some quality.