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Tweeks Cycles£12.79Visit shop Park Tool FR-5.2GT Cassette Locking Tool with 12mm PIN
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The Park Tool FR-5.2GT Cassette Locking Tool is designed for cyclists who need to remove and install cassette lockrings on thru-axle hubs. Its key benefit is the integrated 12mm guide pin, which significantly improves stability during use, making the process smoother and more precise. A potential caveat is its specific design for 12-spline lockrings, requiring users to confirm compatibility with their drivetrain components.
| Model Part Number | FR-5.2GT |
|---|---|
| Brand | Park Tool |
The 12mm guide pin centers the tool on the thru-axle and helps stabilize it on the lockring, preventing slippage and making the removal or installation process more secure and easier to control.
The FR-5.2GT is specifically designed for 12mm thru-axle hubs. While it might fit loosely on some smaller diameter QR axles, its stability is optimized for 12mm thru-axles. It may not provide the necessary stability for QR systems.
No, the Park Tool FR-5.2GT is the tool itself. You will need a separate standard wrench, such as a 1-inch socket, 32mm socket, or an adjustable wrench, to turn the tool.
The FR-5.2GT fits Shimano cassettes with 12-spline lockrings that have a 23.5mm diameter. Most modern Shimano and SRAM cassettes use this standard, but it's always best to visually confirm the spline count and diameter of your lockring.
Yes, it is compatible with 11-speed and 12-speed cassettes from brands like Shimano and SRAM, provided they use the standard 12-spline lockring design with a 23.5mm diameter.
The 'GT' designation signifies the inclusion of the 12mm guide pin, specifically for thru-axle hubs. The standard FR-5 models typically do not have this integrated guide pin.
Clean the tool with a cloth after use to remove grease and dirt. Store it in a dry place to prevent corrosion. Avoid abrasive cleaners.
Verify the lockring is a 12-spline type and measures approximately 23.5mm in diameter. Ensure you are not trying to use it on a different type of freewheel or hub component.
Ensure the tool is correctly seated over the thru-axle. The fit should be snug. Check that the thru-axle itself is properly installed and not damaged.
Apply a penetrating lubricant to the lockring threads and allow it to soak in. Use a longer wrench or a breaker bar for increased leverage, applied smoothly and steadily. Ensure the tool is fully engaged with the splines.
Confirm the tool is fully seated and the guide pin is engaged. Ensure both the tool's splines and the lockring's splines are clean and free from debris. Use a high-quality wrench for a secure grip.
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