Orange Cycle PartsMotion Pro Sprocket Jammer

Easy to use and did the job.

This works pretty well. Used to stuff a rag in there (still a fine method). After many years of working on bikes I like this tool, good to have.

I had heard bad reviews for this online, but it was cheap enough that I decided to add it to my kit. Thought it might come in handy someday and lo and behold that day came not too long after I purchased it. Friend had removed his chain and was working on replacing his front sprocket as well. Sprocket Jammer worked like a champ at both removing the old sprocket and installing the new one with the chain removed the whole time. Now sure there are more ways we could of done this, but this tool made it super simple and let us keep our momentum as we worked on his bike. Zero damage to the Jammer after we were done and box in the tool box it went.

Completely unnecessary, but I had to have it. Works just like it's supposed to, and just looks better than a screwdriver.

Ordered both of the MP sprocket removal tool jammer tools . I was amazed how small they were . I expected to be able to put them between chain and countershaft sprocket but for a 428 530 chain . pretty small .May try using between rear sprocket and chain but I dunno . Very well made tho .