



Park Tool FR-5.2GT Cassette Lockring with Tool 12mm Pin
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Luis G.
> 3 dayWorks. Feels solid. Guide pin is nice. Works for cassette removal and direct mount Shimano rotor removal install.
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Uriel Cuevas
Greater than one weekGood value
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GS
> 3 dayQuality product. Needs a 1” tool. I used a socket. Would have preferred that it fit directly on my socket wrench.
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kw-2wheel
> 3 dayAnother solid product from Park tool
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Hines
> 3 dayThese are great tools. If you want the Best Buy his for thru axles
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Doug Perrenoud
> 3 daySo this is the 4th version of this tool that I have purchased and like all of the others, it is an improvement over my prior ones. Well, to be clear, it works well for wheels with thru-axle hubs only - I will definitely keep my other tools for my bikes with conventional axles and skewers. It also works well for removing centerlock disc rotor lockrings. Considering what I paid for my new bike with all the new tech, I figure an additional $14 for this modified tool is a reasonable investment.
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mkuliska
> 3 dayThis tool is needed for my cassette removal and installation
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Dennis Santos
> 3 dayMust have tool for those with centerlock disc brakes durable and greqt brand
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C. Goulet
> 3 dayI had to remove my rear cassette to upgrade my hub on my Shimano 11-34 GRX, and no other tool would fit. Soviet-era tough, just like every other Park Tool item. Fits perfectly in the largest of their sockets, and with the torque wrench, it now has the correct tightness of fit down to the Nm rating on the gears. If you like tinkering with your bike, and saving money on maintenance, this is a great addition to your kit. Happy riding.
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R. Argue
10-06-2025Who can torque to 40Nm with a 1 box wrench? And who can be bothered to use a chain whip when an impact driver will take a cassette lockring off in half a second without even needing to hold the cassette? This tool would be great if it directly supported 1/2 drive, but requiring a 1 socket to adapt this to anything makes it way less useful.