Park Tool FR-3 Freewheel Remover for SunTour 4 Notch

The Park Tool FR-3 Bicycle Freewheel Removal Tool - 4-Notch SunTour is a versatile tool designed to assist in the removal and installation of bicycle freewheels. Manufactured by the renowned Park Tool company, this tool is a product of their extensive experience and expertise in the bicycle industry.

The FR-3 tool is specifically designed to fit the four-notch tool fittings found on SunTour freewheels produced since 1986. Its thin-wall construction allows for use without the need to remove cones and locknuts, making the process more efficient and convenient. The 1-inch hexagonal base of the tool can be used in conjunction with a socket, wrench, or bench vise, providing multiple options for the user to apply the necessary force for freewheel removal.

Constructed from heat-treated alloy tool steel, the FR-3 is built to last, ensuring a lifetime of reliable use. The four notches on the tool measure approximately 24 millimeters across, and the center bore provides 10 millimeters of axle clearance, accommodating a wide range of bicycle axle sizes.

To determine the type of rear sprocket system on a bicycle, users can spin the sprockets backwards. If the tool 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. For freewheels, the number of splines or notches and the outside diameter of the tool fitting must be identified to select the appropriate removal tool, such as the FR-3 for four-notch, 24-millimeter fittings.

In addition to the FR-3, Park Tool offers a comprehensive line of cassette lockring and freewheel removal tools, including the FR-2, FR-6, FR-8, and FR-1.3, each designed to accommodate different freewheel configurations. These tools, combined with the appropriate driving method (e.g., Park Tool FRW-1 wrench, adjustable wrench, or 1-inch socket), empower mechanics and riders to service the rear cogs of virtually any bicycle.

Since its inception in 1963, Park Tool has been dedicated to designing and manufacturing high-quality tools that cater to the needs of bicycle mechanics and enthusiasts. The FR-3 freewheel removal tool is a testament to this commitment, providing a reliable and efficient solution for maintaining and repairing bicycles.

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