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Koch 7725010 Roller Chain Breaker, #25 to #60

4.3 out of 5 stars 173 customer reviews
| 11 answered questions

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  • Koch Industries
  • 7725010
  • Roller Chain
9 new from $13.35

$13.97 Free Shipping for Prime Members | Fast, FREE Shipping with Amazon Prime In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Koch 7725010 Roller Chain Breaker, #25 to #60
  • +
  • Koch 7525040 Roller Chain Connector Link, 4-Pack, #25
Total price: $19.64
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Product Description

Product Description

7725010 Features: -Roller chain breaker. -Ideal for disassembling rivet type roller chains. -For use with #25 to #60 chains. -Metal. Product Type: -Chain And Hooks. Dimensions: Overall Height - Top to Bottom: -0.75 Inches. Overall Width - Side to Side: -3.25 Inches. Overall Depth - Front to Back: -6 Inches. Overall Product Weight: -0.81 Pounds.

From the Manufacturer

Ideal for disassembling rivet-type roller chain. Black oxide and zinc plated. For use with #25 - #60 roller chain.


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Customer Reviews

Top Customer Reviews

Verified Purchase
I bought this chain breaker since it is meant to break #25 - #60 chains and after i ordered it i read all the bad reviews on how it's not meant to be used on small #25 chains and that it just ruined their chains but after i received it which was btw very quick shipping..i used it to cut my goped gsr40 chain and it worked like a charm! The people that said it doesn't work on small chains is cuz they don't know how to use it!!!! Alil advise when your turning the lever don't try to push the pin all the way out just turn it till the pin backs out just alil bit then go with the next pin & do the same and then remove chain from tool & just wiggle the link out by hand plain and simple..if u try to push the pin all the way out with the chain breaker all you will do is bend the chain.so just remember turn the lever just alil bit to push pin out not all the way though.oh and watch some youtube video's on how to use this tool..that's how i realize that i wasn't suppossed to push link pin all the way out.great tool!will last for years.
"Goped mechanic"
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Verified Purchase
I got this to shorten a 415 chain for a motorized bike project I'm working on. I tested it on an old 415 chain I had from an old motorized bike project and it pushed the pin out with little effort. I like how it comes with a different pin for other chain sizes of similar type.

The quality feels very good and it's an impressive & innovative design. Much better than those other standard design chain breakers that fall apart after a few uses. I tested it 3 times and it pushed the pin out every time without showing any quality problems. Keep oil around for when you need to re lube it over time and it should last a long time. Also it says it contains a chemical that may cause birth defects or cancer so wash your hands well after using it. Your hands get kinda messy after using it because of the oil anyway.

How this works is you grip the roller of your chain on the clamps of the chain breaker and you turn the pin until it pushes out. But be aware it bends the link on the other side of the pin your trying to push out. You could fix the link that got bent with a vice so keep one handy incase you wanna fix the bent link. Usualy I just dispose of the remaining links I remove which is usualy one of the links that gets bent while removing the pin.
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Verified Purchase
This chain breaker works great. I use it often on #40 chain and have used it a couple times on larger 50 and 60. It is exactly like another one I had that wore out after maybe ten years (the threads eventually stripped). My old one lasted a long time so this one should too.
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Verified Purchase
Great easy to use product! Makes breaking chain links easy. Comes in handy. Don't need a grinder or hammer and punch. Just grab the handles a squeeze together place on link twist an they pop apart. Must have if you change a lot of chains. Good quality and sturdy. There a lot better than other brands I've tried. Great price too. It comes with an extra push pin but have yet needed to replace it after a lot of uses. Would highly recommend if you have much chain to break. Saves a lot of time compared to breaking chain by hand an possible bending a link in the process. The Koch Industries Inc. 7725010 #25 To #60 Roller Chain Breaker is a high-quality cutting tool. It can be very helpful when it comes to disassembling or cutting rivet-type roller chains. This device can be used with both #25 and #60 chains. The durable metal material features black oxide and zinc-plated protection, ensuring that the chain breaker tool will last for a very long time.
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Verified Purchase
This did a good job of popping the link on my Schwinn bicycle chain open, allowing me to remove the chain. However, to assemble the link on the new chain was very difficult. This tools excels in its named function, "breaking" the old link loose. I ended up using various other tools to assemble the new chain.
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Verified Purchase
I read a review from a couple years ago which said this breaker was wimpy with fragile handles. This one has solid handles! My #50 chain parted with practically no effort. Previously, my approach was to grind down the staked link to the plate, then punch out the pin. That consumes a lot of time and may contaminate the rest of chain with abrasive particles.
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Verified Purchase
Also comes with a spare breaker tip. Worked fine to break chain or as I was using it, to pull apart clip style master links without ruining them so I could use the same master link between dirt and supermoto setups.
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Verified Purchase
This sits in my tool bag and is not used often, but when I have to break a chain for a job, it preforms. this style of a roller chain breaker is by far the best, other than a cold chisel and a hammer.
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