Broke in less than 40 miles
599480
This is the second set of colored fenders that I have had shatter this month.  I have had the black fenders for years and 100's of miles.  No problems  Inferior product,  planet bike would not even respond to my emails.
4756880
Snapped off with no warning at about 100 miles with more than half of post inserted.
Observed that the tube and seat bracket were separating also.
Very dangerous in my opinion.
3989093
Bought this to replace a pair of worn links on an '03 XJR. Even though I've read other reviews of URO components, I decided to give cheap a chance. Within 6 months, the right side had completely failed again, requiring another replacement. So while they will work in a pinch, and will at least last a little while, I won't be taking a chance on cheaper components in the future, with that sort of uncertainty on longevity.
599433
Used this to replace the old chain on my 7-speed bike after about 3000 miles.  Installation was a bit painful due to my incompetence.  It worked fine for a couple hundred miles and shifted way better than the old grubby chain I took off.  However, it broke while I was 25 miles from home.  Not sure if it was a bad chain, or I just suck at installing properly...
252621
I was really hoping this would be tough enough for mountain biking. One of the tips of the clamp broke off after the first 5 miles of riding. See attached photo.

I would say this mount is plenty strong for riding on the road. Just don't count on it for any off-road biking.
1716437
Had my local repair shop install this new oil pump.  Oil pump ended up failing after 50 miles...causing an issue with engine pressure which in turn blew my motor.
3723832
I put the chain on the bike, everything seemed fine with the chain as I tested the operation by hand on the stand before taking it out. I didn't even get a 1/2 mile out on the initial ride with this chain before it broke and fell off. Sitting down pedaling it worked fine, I stood up on the bike and I don't think I got 20 revolutions of the crank before it broke off. Chains typically last me between 3 to 6 months depending upon riding before they are stretched out and in need of replacement. I have had good luck with Shimano IG chains in the past over the years on multiple bikes (both cassette/derailleur types and single track IGH) . This was my first time to use the HG chain as it appears the IG chains are discontinued and no longer available. I may have just ended up with a defective chain, I'm not sure as I had no carcass to examine after the fact. Either way a failure like that does not inspire confidence. This next time I think I will be going with an SRAM -PC870 as a replacement.

I lost the chain going through a busy intersection. I stopped and spent a few minutes looking for the chain, but decided it was not worth the safety risk to continue hunting for it, I turned around and had to walk the bike home. I am glad the HG chain dumped very early in the ride so the walk back was not very far (a typical days ride for me is between 30 and 40 miles).
290862
This chain broke twice in the two weeks after I put it on.  I ended up stranded on my way to/from work and had to walk the rest of the way.

I ride a road bike, and I guess I pedal hard, but this is unreasonable - I expect to get at least 6-7 months out of a chain.
2409834
I bought this for my roof rack because I was driving 3000 miles doing a trip. And on the first day maybe 100 miles in on the highway it frayed and ripped completely apart almost making all of my belongings that were in my roof rack fly off. Forcing me to go buy ratchet straps and use those the rest of the trip. Please use something more durable.
542590
I purchased these in June of 2009 and installed them on my truck to give my truck more support to haul my 31ft. 5th wheel. Today 6/13/2011 a 6 inch piece of one of the leaf spring helpers broke off while I was driving down the road. Lucky for me and other traffic it happened while I was on a less traveled road and only going about 25 mph. These leaf spring helpers are only 2 years old and they broke. I guess they are not made of quality steel. I don't recommend them.
2214650
I bought one of the cheaper off-brand versions for around $20 and it broke less than 60 days later. Toyota is definitely worth the money.
3497569
Broke less than a week after I got it, returned it and got a refund
4457429
My wife used this thing a lot shortly after she got it, until it broke, as did the next one, and we got tired of breaking these things, and went back to factory parts! My mom had the same issue.
1963037
Went on a short ride at about 25 F and unfortunately, the rear plastic support simply broke of when I hit some slush. Good thing I noticed so I has something to return the amazon. Worker well, just doesn't handle low temps proper.
1457268
My sample was a PITA.  We put around 4000 miles on our 27RBOK Jayco on a trip from South Dakota to Hyder Alaska, and one of the tension bars dropped out of its socket five times during low speed parking maneuvers.  Got almost obsessive about making sure the pin was seated securely before we put weight on the bars.  I even changed the ball angle enough to increase the chain tension to plus one link.  I finally ratcheted a metal hose clamp snugly around the pin bracket assembly to prevent the pin from backing out.  My dealer will to exchange it for an Eaz-lift Trekker which has sockets that hold the bars laterally (not vertically) and pins that slide through the bar grooves to secure them. I wish they had installed the replacement from the get go!
780535
While installing the product, noticed the rubber retainer (???) for the bike snapped making it unusable. I'm very disappointed because I had hoped to make it down to a local trail this weekend with ease instead of loading a bike in and out of my trunk. I know this is easy for me to replace using my own money on the makers website, but being that I've had it in my possession for less than 2 days makes me wonder how well built the rest of the item is.
4336343
If you ride more than casually on other than groomed bike trails, do not buy this product.  I used this product on my road bike and on my 5th ride the plastic stem broke off.  I was going approximately 20 mph, hit some very small pot holes and my phone flew to the road. Luckily it was not damaged.  Don't risk your cell phone with this product.