Cassette Locking Tool with Pin 12 mm for Park Tool FR-5.2GT

Park Tool offers a full range of tools for bicycle cassette lockring removal and installation. The FR-5.2GT is designed specifically for use when removing and installing cassette lock rings from thru axle hubs. It fits 12 spline 23.4mm diameter tool fittings, which are the most common tool fitting found on 7-12 speed bicycle cassette lockrings, including many models made by Shimano, SRAM, SunRace, SunTour, Chris King and others. The tool also fits Shimano disc brake lockrings with 12 internal splines.

The FR-5.2GT features a 12mm guide pin to stabilize the tool when used with thru-axle hubs. The 1" hexagonal base can be used in conjunction with a socket, wrench, or bench vise. The tool is constructed from heat-treated alloy steel for durability and a lifetime of use.

To determine the type of rear sprocket system you have, find the tool fitting on the sprocket set and spin the sprockets backwards. If the fitting spins with the cogs, it is a cassette system. If the tool fitting does not spin with the cogs, it is a freewheel system.

If you have a multi-speed cassette, you need one of two tools. If the cassette, derailleur, or shifter are labeled with Campagnolo, the tool for you is the BBT-5/FR-11. Otherwise, you will require a tool in the FR-5.2 line.

In addition to the correct tool, you will also need a method of driving it (such as an adjustable wrench or 1" socket) as well as a chain whip to hold the cassette in place as you remove the lockring. Park Tool makes a full line of chain whips and wrenches for this purpose.

Since its origins in a bike shop in 1963, Park Tool has been dedicated to designing and manufacturing high-quality tools that empower mechanics and riders of all skill levels to service their bicycles. The FR-5.2GT is a product of their decades of experience and expertise in the industry, in the shop and on the trail.

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