







🔗 Ride Strong, Ride Smart: The Chain That Keeps You Ahead
The RK Racing Chain 520-SO-120 is a premium steel O-ring chain designed for low to mid-range motorcycles up to 400cc. Featuring a robust 6,900 lbs tensile strength and Nitrite Butadiene O-ring seals, it ensures smooth power delivery with minimal drag. Lightweight yet durable, this chain is perfect for both street and off-road use, complete with a clip-type master link for easy installation.

| Manufacturer | RK Excel America |
| Brand | RK Racing Chain |
| Model | 520SO |
| Item Weight | 2.9 pounds |
| Product Dimensions | 10.2 x 4.8 x 1 inches |
| Item model number | 520-SO-120 |
| Is Discontinued By Manufacturer | No |
| Exterior | Steel |
| Manufacturer Part Number | 520-SO-120 |
T**Y
Happy with this chain
Nice chainYou will need tools to remove extra links offWith correct tools worked out300 miles and holding up great
Z**S
Good chain
A well built and packaged chain. I ordered additional links just in case the new sprocket combo didnt match. The link disassembly wasnt easy but probably due to our tooling. The clip style attach link was very difficult to install w the included o rings but would be easier in a shop w better tooling. If used RK chains before and never had a problem.Id recommend a quality link splitting tool if you can afford it.
R**R
Good Value
Good value chain for the money. You still get the benefits of having a greased o-ring chain without having to pay the exorbitant prices of an x-ring or w-ring chain.Also, RK chains are generally better value than DID chains. I have used both plenty of times and now I always go with RK because they are cheaper and have always been just as good (if not better) as DID.
J**N
Works fine
Got normal stretching out of it last as long as the others definitely order it again
E**T
It works well
It seems to be a nice chain, it was pretty easy to install and my bike seems to run a lot smoother with the new chain. There were enough links left over and I added a couple more master links so I put together a small repair kit incase I have any trouble out in the field.
A**A
Good chain in fair price
This is second time I ordered this chain. It is a very good chain in fair price. Arrived very fast and even that I didn't install it yet, I already installed it in the past on my previous bike. Thanks
R**7
Great chain, been using these for years
I have two of these, one on a KX500 and the other on my XR650R, both bikes have a lot of torque and the chains have been fine. No noticeable stretching and the only wear I’ve seen is on my sprockets.
T**.
Arrived Missing Master Link! Stick with DID
Chain arrived late, box was damaged and looked like it was opened before. Was missing master link!!i I ended up using a DID one I had instead instead of returning it due to timing.Chain links are very hard to move out of the box even though they are greased, this is not true for DID chains, stick with those, for a little bit more if not the same, better quality, and reliability, and I’ve never had missing parts.
Trustpilot
1 month ago
2 months ago