Not many.

This chain came stock on my bike, and lasted less than a month before I snapped it and upgraded, and all I was doing was cruising around town.

Piece of junk. Maybe use it for a wallet chain when it breaks? All in all, this chain should probably only be purchased by those looking to increase their blood pressure and stress levels, or if you really need practice at roadside chain repair.

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Shimano HG-40 (What I got after the IG-31)

Strong with mininal stretch for years.

None.

This chain came stock on my 1996 GT Ricochet that I got on October 15,1996.(1 week after my birthday as it was my birthday present to me) during D'Ornellas Bike Shop winter sale from October - February. I put well over 10,000kms on this chain till I replaced it in 2000 as it had started to stretch. I used this bike 99% of the time for city street, sidewalk & waterfront bike path riding. The 100km+ distance I put on this chain while off-roading was either in a city park in the woods area when asphalt & cement riding had gotten to me. Also I used this bike for the last few bike races of the 1999 Chico Racing - Wednesday night racing series up at Dagmar, ON, Canada (mtb resort).
In 2000 I replaced the chain with a Shimano IG-72. This chain has a few 1,000kms on it as on July 02,2001. I returned from a 2 week holiday in West Central Florida to Earl's Cycle (closed 2003) to pick up my brand new 2001 Trek Fuel 90 Disk.
Bottom Line: A Shimano chain that came stock on my bike and lasted for 1,000's & 1,000's of kilometers.

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Whatever came stock on my 1994 Raleigh Matterhorn.

its a chain

its not a good chain

I'm sure this thing is fine for the casual rider, which is probably who this chain was made for, But do not trust it if you do any real riding. I broke this thing three times the 3rd month I had it before I decided just to give it up, That was 3 times my day was ruined because of a chain. I'm just glad I didn't get in any serious crashes because of this thing, it always broke on pavement on the way to the trail weak pos.

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never really had to pay attention to chains before

strengths? What strengths?

This chain is a piece of crap!Do not waste your time or money on it. This chain broke on me the 6th time i used it.

Dont waste your time!!!

It's Cheap

It's completely gone in just over a year. (this is partialy due to abuse)

Don't buy it, but I guess it's okay if it comes on your bike like mine did. I only weigh about 125lbs. I guess with the bike and gear theres about 160lbs riding on it. how could this thing break under such a light load.

-Last 2 years
-cheap

If it breaks, the chain damages everything
Cannot add new sections

After a year or so be prepared to change it. I tried to add new sections to the chain, but I ended up scraping the rear cogs.
If you want to cheap out on this chain go ahead, but if you have money, don't buy this.

Strong! Doesn't stretch at all. Doesn't corrode as much as you would think it would. Comes with greese repelling lube on it. Pretty finish.

Heavy. The HG chains are lighter. Pearly finish wears off eventually.

Good chain nice and cheap.

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Dura-Ace/XTR, Wipperman Nickel Plated, Campy Record Narrow

broken twice in one month

I know this a low end bike from specialized, but i still expected more.....

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not sure

Strength? What strength?

Skips teeth, not much on strength for heavier riders.

This chain came stock on my bike. I had only used it for a week before it broke on me. I was biking on the street, and was trying to accelerate after a stoplight. Not a very aggressive launch either. I'm not sure if my weight did it, but I don't believe I will ever buy a Shimano chain again.

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SRAM PC-58

well it worked for about 2 years

is it too much to expect more than 2 years' service out of something as basic as a chain cos thats how long mine lasted while my friends have older chains and no probs so far...

I cant believe this is the same chain as the other guys have reviewed - mine stretched so badly it was skipping in most gears with any kind of pressure on the pedals. I looked after it well cleaning it and the cassette after every serious ride and oiling it thouroughly. NOt impressed. Shimano seem (in my experience) to be going downhill. They only seem to put any effort into the higher end stuff. Thats why ive got a Sachs one now.

average value rating cos it came in the bike
poor overall rating cos i expect a chain to last longer than 2 years of fairly infrequent use

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Now got a Sachs PC-91 (avoiding shimano wherever poss now)