Park Tool
CM-5.3 Cyclone Chain Scrubber

This product is simple to use and does a great job at making your chain shine. My friends chain on a bike he bought recently was almost black. It made it shine like a new silver chain. My friend was amazed!

I'd buy again. In fact I bought another one as a gift. Love it.

The product is durable and very easy to use. What more needs to be said?!

Pros: Cleans the chain easily, and without having to take it off the bike. Then, I can take the top part off and dip a toothbrush into it to scrub the jockey wheels and the crank, getting the whole drive train nice and clean.

Cons: Falls apart after a few months like a politician's campaign promises. Not good. The pins that hold the clips onto the unit fall out. The handle fell off, in my hand, while spinning the crank. Lovely degreaser swill all over the basement floor. Aggro-ed the wife. Not good. I think there is an incompatibility in the materials Park uses and the degreaser chemicals. Seems to attack the epoxy they use to keep this thing together. Without the handle, I can still use the unit, but with the clips gone, I can either buy this one, or lay out bigger money for the aluminum one, but if you read the reviews, that unit has its issues as well.

This seemed like a good idea, so I tried one. It was disappointing. For years I have simply removed my chain and cleaned it in solvent in a small pail. After buying this, that is what I will continue to do for a regular bike. There is little to taking off a chain and reinstalling it. It cleans easier and better in a pail and the pail is easier to clean up than the Cyclone. Besides, once the chain is off the bike, it's easier to clean the derailleur parts.

My wife is short and has two bikes with a small frame size. The Cyclone's length makes it nearly impossible to use on these. When you turn the crank, there was no clearance between the pedal's rearward position and where you need to hold the Cyclone.

I give it some credit because I bought this primarily to clean the chain for my recumbent trike which has about 2.5 times the chain of a standard bike and removing the chain and re-routing the chain through the various tubes and idlers is not as quick and simple as removing a traditional bike's chain. It has a benefit for a quick cleaning on the recumbent. You need a large bucket and lots of solvent for that much chain!

Meet my expectations. PC

Very useful and well made tool. Standard parktool quality

This is a must-have product for road riders who, like me, ride in the winter amidst salt & grit on the roads. I have also used it on my old bike, mounted on a Kickr Core in the basement, whose chain needed cleaning & lubrication.

The quickest way to get the chain clean without removing it. Easy to use, we'll see how the plastic holds up over time.

Easy to use. Just be careful when closing the clips that hold top and bottom pieces together and removing the magnet from the bottom - they are easy to misplace or lose. Works well with degreaser or Simple Green or Dawn detergent.