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  • K-Edge Chain Catcher - Clamp-type
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K-EdgeChain Catcher - Clamp-type
Sale 5% Off$51.99 $54.99

Item # KEG0003

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  • Black, 31.8mm ($51.99)
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Item # KEG0003

We've all been there: Seriously rough roads or mis-timed shifts can throw your chain off the inside of the chainrings. And like the oft-fashioned custom widgets designed and built by pro team mechanics on the eve of the cobbled classics, the K-Edge Clamp-on Chain Catcher acts as a safeguard against this nightmare. The difference being, you don't have to be a pro to have one.

Your chain will never again shoot inward beyond the inner chainring, giving you the confidence to slam it into the small ring at will, no matter what the condition of the road surface. The real benefits, aside from quick and worry-free shifts, are protection for your carbon fiber race bike and your chain will be right where you want it to be when you aim to grind your rivals into the tarmac. The clever part of Chain Catcher is the adjustment, really. The arm, that keeps the chain on your rings, drops down from a single stainless bolt that is used to make the attachment to the clamp. And it has a small set screw that allows for in/out adjustment when the fixing bolt is loose. The entire setup operation can be completed in just a few minutes.

The K-Edge Clamp-on Chain Catcher has its own clamp, so it doesn't require your bike frame to have a braze-on derailleur tab. So tab or no tab, it will work on your bike as long as the seat tube is round and the diameter matches the clamp. It mounts just below the derailleur. It's made from CNC-machined 6061 T6 aluminum in Boise, ID. It weighs 22 grams and is available in Black and Gunmetal and in two clamp diameters -- 31.8mm and 34.9mm.

Tech SpecsWeight
Tech Specs
6061 T6 aluminum
Recommended Use
keeping your chain where it belongs

Claimed Weight

Claimed weights are provided by the vendor.

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23 g

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Well made but be careful with carbon.

  • Familiarity: I've put it through the wringer

I have the K-Edge front derailleur braze-on adapter which is basically the same clamp as used for the chain catcher. It's the most minimalistic and well designed clamp that I've found. The problem is, it has a smaller contact area than Shimano's clamp and even following the frame manufacturer's spec of 2.5nm torque, it has caused a crack in my downtime. K-Edge recommends no more than 2nm, but I don't think .5nm additional would be enough to cause a crack in the carbon frame. There isn't any relief designed into the clamp around where it comes to gather and there is additional force inward onto the downtube as the clamp closes where it splits. You may want to take a small piece of sandpaper and just remove about .5mm of material where the clamp edges meet to be safe. I would still use the chain catcher clamp shown here but be very careful. Even 2.5nm is too much force on a carbon downtube. Use a small amount of carbon grip and tighten only until snug. It's not going anywhere and there's no real force on it so it will be fine. The front derailleur needs a bit more torque and I'm not sure that there's enough contact area to safely use the K-Edge braze on adapter clamp for certain carbon frames. It caused a crack in my Bianchi so I'd recommend against using it on that frame. Otherwise I think K-Edge makes some of the nicest products out there.

It's light and it works!

  • Familiarity: I've put it through the wringer

Haven't dropped a chain since I got this. I have it set up a little differently than the instructions tell you to. I'll try and post of picture of it soon.

Hey Pete, do you have that pic?