Park Tool FR-5.2 Cassette Lockring Tool
Tools
Park Tool FR-5.2 Cassette Lockring Tool
Park Tool FR-5.2 Cassette Lockring Tool
The Park Tool FR-5.2 is a cassette lockring tool designed for removing and installing the lockring that secures your cassette to the freehub body. Read the overview
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Overview
What Does the FR-5.2 Cassette Lockring Tool Do?
The Park Tool FR-5.2 is a cassette lockring tool designed for removing and installing the lockring that secures your cassette to the freehub body. Its splined interface engages the lockring precisely, allowing you to apply full torque through a bench vise or large adjustable wrench without the tool slipping off mid-tighten. The FR-5.2 is compatible with Shimano, SRAM, and most standard cassette lockrings, making it the tool that handles the majority of cassette service in any shop or home garage.
Cassette lockrings require significant torque to install correctly and can be stubborn to remove when they've been seated through many miles. The FR-5.2 gives you a secure, full-engagement tool that stays put under load, so you get clean lockring service without the frustration of improvised solutions.
All the specs
- Compatible
- Shimano and SRAM standard cassette lockrings
- Interface
- Splined engagement
- Drive
- Bench vise or large adjustable wrench
- Ratchet drive
- Also accepts 3/8 in or 1/2 in ratchet drive
Good questions
Get to know Park Tool
There's more to Park Tool than this one product. Our Park Tool page has the full Park Tool lineup we carry and more about the brand.
Visit the Park Tool page →Is the FR-5.2 compatible with Shimano and SRAM cassettes?
Yes. The FR-5.2 fits the standard splined lockring interface used by Shimano and SRAM cassettes across road, gravel, and mountain drivetrains.
Do I need a chain whip with the FR-5.2?
Yes. A chain whip is needed to hold the cassette from spinning while you apply torque with the FR-5.2 to remove the lockring.
Can the FR-5.2 be used with a torque wrench?
Yes. The FR-5.2 accepts a 3/8 in or 1/2 in ratchet drive, making it compatible with a torque wrench for precise lockring installation to spec.
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