Feature

●The FR-5.2GT is designed specifically for use when removing and installing cassette lock rings from thru axle hubs
●Utilizes a 12mm guide pin to stabilize the tool in use
●Fits 12-spline cassette lock rings from Shimano , SRAM (including 1x), Sun Race, Sun Tour, Chris King and others (23.5mm diameter)


Description

Park Tool FR-5.2GT being used on a cassette lockringPark Tool FR-5.2GT being used on a cassette lockring

Park Tool FR-5.2GT Bicycle Cassette/Disc Brake Lockring Tool with 12mm Guide

Park Tool offers a full range of tools for bicycle cassette lockring removal and installation. The FR-5.2GT fits 12 spline 23.4mm diameter tool fittings - 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. Also fits Shimano disc brake lockrings with 12 internal splines. Thin wall construction allows use without removal of cones and locknuts. 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. Heat treated alloy tool steel construction for a lifetime of use.

The FR-5.2GT has 12 splines that are approximately 23.4mm across at the widest point.

PARK TOOL: YOUR GUIDE TO THE WORLD OF CASSETTES & FREEWHEELS

Cassette lockring with arrow denoting counterclockwise rotationCassette lockring with arrow denoting counterclockwise rotation

Campagnolo cassette lockringCampagnolo cassette lockring

Cassette lockring tool, chain whip and adjustable wrench removing a bicycle cassette lockringCassette lockring tool, chain whip and adjustable wrench removing a bicycle cassette lockring

CASSETTE OR FREEWHEEL?

To determine the type of rear sprocket system you have, find the tool fitting on the sprocket set. 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.

CAMPAGNOLO OR NO?

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 our FR-5.2 line.

THE RIGHT TOOLS FOR THE JOB

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 very purpose.

Park Tool makes a full line of cassette lockring and freewheel tools to empower you to remove the rear cogs of virtually any bicycle. Heres a selection of tools similar to the FR-5.2GT:

Park Tool FR-5.2 Cassette Lockring Tool Park Tool FR-5.2G Cassette Lockring Tool Park Tool FR-5.2GT Cassette Lockring Tool Park Tool FR-5.2H Cassette Lockring Tool Park Tool BBT-5/FR-11 Tool Park Tool FR-1.3 Freewheel Tool
FR-5.2 Lockring Tool FR-5.2G Lockring Tool w/ 5mm Guide Pin FR-5.2GT Lockring Tool w/ 12mm Guide Pin FR-5.2H Lockring Tool w/ Handle BBT-5/FR-11 Lockring Tool FR-1.3 Freewheel Remover
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Price $9.95 $10.95 ? $45.95 $8.95 $9.32
Tool Type Cassette Lockring/Disc Brake/Suspension Fork Top Cap Cassette Lockring/Disc Brake Cassette Lockring/Disc Brake Cassette Lockring/Disc Brake/Suspension Fork Top Cap Cassette Lockring/Bottom Bracket Freewheel
Tool Fitting 12 Internal Splines 12 Internal Splines 12 Internal Splines 12 Internal Splines 12 Internal Splines 12 Internal Splines
Tool Fitting Measurement 23.4mm Outer Diameter 23.4mm Outer Diameter 23.4mm Outer Diameter 23.4mm Outer Diameter 22.8mm Outer Diameter 22.6mm Outer Diameter
Typical Brands & Models Shimano, SRAM, SunRace, SunTour, Chris King, etc. cassettes, Shimano disc brakes, Rock Shox suspension fork top caps Shimano, SRAM, SunRace, SunTour, Chris King, etc. cassettes, Shimano disc brakes Shimano, SRAM, SunRace, SunTour, Chris King, etc. cassettes, Shimano disc brakes Shimano, SRAM, SunRace, SunTour, Chris King, etc. cassettes, Shimano disc brakes, Rock Shox suspension fork top caps Campagnolo Shimano, Sachs Aris, SunRace, DNP Epoch
Additional Features Guide pin for quick-release style hubs Guide pin for 12mm thru-axle hubs Built-in handle
Park Tool original bike shopPark Tool original bike shop

TRUSTED SINCE 1963

Since our origins in the back of a bike shop in 1963, it has been Park Tools sole mission to design and manufacture high-quality tools that empower mechanics and riders of all skill levels to service their bicycles. Just like our other 500+ tools, our cassette and freewheel tools are a product of our decades of experience and expertise in the industry, in the shop and on the trail.

Product information