KMC Z51 Bicycle Chain (6 & 7 Speed , 1/2 x 3/32-Inch)
|Price:||$8.93 & FREE Shipping on orders over $49. FREE Returns. Details|
- Enter your model number to make sure this fits.
- It fits 6/7/8 speed
- It is 1/2 x 3/32 Brown
- It is IG compatible
- For 6, 7, and light 8 speed use
- Compatible with 6-12-18-21-24 speeds
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|Department||adults, unisex-adult, mens|
|Item Dimensions||0.6 x 3.4 x 3.4 inches|
|Item Display Weight||2 pounds|
|Item Weight||2 pounds|
|Model Name||KMC Z51 Chain 6/7/8 Single Speed 1/2" x 3/32" Black 122610|
|Shipping Weight||0.5 pounds|
|Size||0.5 inches X 0.09 inches|
Top Customer Reviews
I had to replace it after I bottomed out into a pot hole while racing down a hill at 37 MPH. The spokes caught the derailleur and ripped it clean off snapping the dropout hanger like a twig. I had to replace the derailleur and the hanger. The chain never broke though. It never even warped in the slightest.
I decided to change it because I didn't want to clean it when I replaced the rest of the drivetrain and I had already put in so many miles...
Of course, I replaced it with this same one.
Do keep in mind, you might want to change the chain more frequently than I did and be very observant of chain "stretch." I had to replace my SRAM cassette because the old chain "stretched" and the cogs on the shredded cassette weren't snugging with the new chain so I had to replace the SRAM cassette as well...
If you replace your chain and feel skipping when you tug, chances are there is a stiff link, or like in my case, the cassette is worn and you'll need to replace it as well.
When using a master link you can very easily take your chain off the bicycle for your monthly drive train cleaning. If you install the master link properly you will not have problems under load. I know this; because I operated a pedicab for a number of years. Pedicabs weight 180 lbs without a single passenger. Add 3 passengers to that, and you might start to get my point.
If you're busting chains under load. There is only one possible thing that can cause that. You're in to high of a gear and you're pedaling up an incline. All you need to do to stop this problem is to switch into a lower gear, probably on your left hand.
Please do not give this chain a 1 or 2 star review it deserves much better than that. KMC's Z51 has been a very loyal part in my shop for several years.
My old chain was still okay, but after almost 20 years of casual biking, I decided it was time to change it. I measured the old chain to determine how much it may have stretched; thankfully, it hadn't stretched (or at least it didn't stretch enough to be noticeable to me). To remove the old chain, I just broke it with pliers.
The new KMC chain was lightly oiled. It was longer than my original chain; a coworker who has bike tools was kind enough to shorten it for me; it was easy for him to remove the excess chain with the tool he had.
The new chain was very easy to install. I threaded it onto the cassette and the rear derailleurs, and then attached the master link. The master link fit so easily that I did not have to step on the pedal to lock it into place. My mountain bike is a 21 speed (7 gears in the back, 3 in the front).
Time will tell if the chain will hold-up as well as my prior chain. I'll update this review again as needed.
It shifts very silently and has so far not made any noise. Overall, it more than exceeded what I had been expecting for a chain this cheap.
I bought Park Tool CT-5, which is a tool to disconnect chain link, along with this chain. KMC website posts instruction of chain replacement.
The replacement was easy, disconnect the old chain link, replace the chain and connect the new chain using missing link. You do not need tool to connect the missing link.
My bike stopped making the noise and gear shifting became smooth. I however found out the the cassette is extensively worn out and does not take the gear I used the most. I order a new cassette. Thank you KMC, vender and Amazon.
Most Recent Customer Reviews
Excellent quality, which I have come to expect from KMC. I only use KMC chains for all my bike restoration projects. A+Published 2 months ago by Matt K.
Worked perfectly as a replacement for my old chain that was 25+ years old. It was also the perfect length out of the box so I just had to use the master links to put it together. Read morePublished 2 months ago by Joe K