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🔧 Unlock pro-level bike maintenance with Park Tool precision!
The Park Tool FR-5.2 Cassette Lockring Tool is a heat-treated alloy steel tool made in the USA, designed with 12 splines and a 23.5mm diameter to fit cassette lockrings and some Shimano disc brake lock rings. Lightweight and durable, it offers professional-grade performance backed by a limited lifetime warranty.












| ASIN | B01LX3E08Z |
| Best Sellers Rank | #7,288 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #7 in Bike Shop Tools |
| Brand | Park Tool |
| Brand Name | Park Tool |
| Chain Or Strap Head Outside Diameter | 23.5 millimeters |
| Color | Metal |
| Customer Reviews | 4.8 out of 5 stars 3,137 Reviews |
| Finish Types | Naturfarben |
| Global Trade Identification Number | 00751738922255, 00763477003485 |
| Head Style | Hex |
| Included Components | Lockring removal tool |
| Item Highlight | Rotor |
| Item Length | 7.5 inches |
| Item Package Quantity | 1 |
| Item Type Name | QKFR52 |
| Item Weight | 1.6 ounces |
| Jaw Capacity | 23.5 millimeters |
| Manufacturer | MDSL4 |
| Manufacturer Part Number | QKFR52 |
| Manufacturer Warranty Description | Limited Lifetime Warranty - See parktool.com/warranty |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Measurement Standard | Metric |
| Model Number | QKFR52 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Package Quantity | 1 |
| Spanner Wrench Hook Depth | 23.5 millimeters |
| Spanner Wrench Pin Length | 23.5 millimeters |
| UPC | 751738922255 763477103987 763477003485 |
| Unit Count | 1 Count |
P**R
Does the job!
Fits my bike perfectly, great tool!
T**L
Solid - Semi Universal - Good Price - Lifetime Tool - Requires 1" Wrench
Most of the Park Tool mechanics tools are built to survive a lifetime and this cassette locking tool is no exception. This is one of the most common lock ring standards for Shimano cassettes. While Park does make some variants to this that have guide pins (offering a bit more stability) this tool is more universal and it compatible with eBike and other hubs where the axle must pass through this tool in order to slip over the rim. If you're wondering, you'll need a 1" box wrench (or similar tool/adjustable wrench) to spin this. I have a 1" craftsman that provides excellent leverage, though a nice Tekton like this: https://amzn.to/4vNJS7H It's about the same quality but cheaper. I'd pick one of these up if you don't already have one, it's a great pairing with this tool. Great stuff as always. Cheaper than a visit to the LBS and the satisfaction of working and repairing things yourself.
J**Y
quality
My first Parktool tool, seems very well made, should last a long time.
2**3
Simple tool for a simple task, works great
Works perfect as designed. Worried about holding it steady as you turn it? Just run the quick release skewer thru the hub and thru the tool and secure on lightly, just enough to hold the tool in place and easy all you do is turn counter clockwise to take off. Now, you'll need a tool to hold the cassette still from rotating as you loosen the retaining ring. Use a chain whip tool to hold to the cogs or a hooked cog wrench, either will work, but you'll need one or the other to take off a cassette from the wheel. No worry about a wrench, just use a big crescent wrench if need be. The nut is 1 inch, or you can use a 1 inch socket and wrench like I did. It's not on super tight, so remember when you use this tool to install the retaining ring again ... light on the torque! There are "bumps" as you tighten. From first contact, tighten about 4 bumps ... or use a torque wrench and follow the instructions on torque. No centering fitting needed really, just hold in place with the quick release skewer nut! Changed out my cassette easy!
0**0
works for necessary 5 seconds
amazing the one minute you ever use it
P**A
lockring tool is great
excellent tool and a must have for 10 speed cassette.
R**Y
Good tool to have in your kit.
The usual excellent Park Tool quality. This is one to have in your tool kit, as it works with 80% of the freehubs you're likely to encounter. You pay a little more for Park tools, but if "Made in the USA" means anything to you, and you want your tools to last, it's worth the extra cost. Well packaged
K**N
Good tool
A bit pricey but gets the job done
A**R
Original
Jamais déçue avec parktools
A**N
Park tools are always good
Park tools are always good
C**E
Douille pour cassette Shimano
Douille pour cassette Shimano, adapté pour clé dynamométrique PARKTOOL
J**C
Bonne qualité
Bonne qualité, comme souvent avec les outils Park tools
R**T
Für Zahnkranzpakete als Steckkranz
Passt wie angegeben 100%. Man muss aber schon schauen für welchen Zahnkranz. Schraubkränze passen unter umständen nicht. Auf jeden fall 1000 mal besser als das billige Teil was bei meinem Set dabei war. Im Internet (YT) gibt es darüber hinaus vom Hersteller gute Anleitungsvideos.
Trustpilot
3 weeks ago
2 weeks ago