Park Tool FR-5.2 Cassette Lockring Tool
The Park Tool FR-5.2 Cassette Lockring Tool is made of heat treated alloy tool steel. One inch base fits wrench or bench vise. Thin wall construction allows use without removal of cones and locknuts. The FR-5.2 has 12 splines that are approximately 23.4mm across.
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Details
- Fits Shimano®, SRAM® (including 1x), SunRace®, SunTour®, Chris King® and other cassette lockrings
- Also fits some Shimano® disc brake lockrings
- Center bore for axle clearance is 12mm
- Base size for socket or wrench is 1" or 25.4 mm
- Always use a quick release skewer to hold the tool in place and snug to cogs when loosening; For solid axles, use the axle nut

Description
The Park Tool FR-5.2 Cassette Lockring Tool is made of heat treated alloy tool steel. One inch base fits wrench or bench vise. Thin wall construction allows use without removal of cones and locknuts. The FR-5.2 has 12 splines that are approximately 23.4mm across.
-
Details
- Fits Shimano®, SRAM® (including 1x), SunRace®, SunTour®, Chris King® and other cassette lockrings
- Also fits some Shimano® disc brake lockrings
- Center bore for axle clearance is 12mm
- Base size for socket or wrench is 1" or 25.4 mm
- Always use a quick release skewer to hold the tool in place and snug to cogs when loosening; For solid axles, use the axle nut















