The job
A heat-treated alloy-steel remover driven through a separate one-inch wrench or socket.
Park Tool · Threaded-freewheel remover
Park Tool FR-3 Four-Notch Freewheel Remover
A heat-treated alloy-steel remover driven through a separate one-inch wrench or socket.
$13.95Nov 7, 26, 12:51 AM · New York
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- Receiving interface Specified SunTour four-notch freewheels
- Contact layout Four projecting engagement tabs
- Maker’s approximate outside contact 24 mm
Receiving interface
Specified SunTour four-notch freewheels
Match all receiving contacts
A similar overall diameter is not enough if the notch pattern differs. Use the actual four-notch fitting and exact freewheel identification.
What this choice changes
A four-notch contact for the specified SunTour freewheels
The FR-3 addresses the SunTour four-notch freewheel interface, rather than the two-notch fitting served by the FR-2. Four projecting contacts around the tool engage that receiving system. Identify the freewheel’s actual fitting before buying; the tools are not interchangeable just because the same manufacturer name appears in both descriptions.
Park Tool identifies four-notch SunTour freewheels from 1986 onward in its fit guidance, with approximately 24 mm outside contact and 10 mm central axle clearance. The tool’s one-inch base supplies the driving flats, not a built-in handle. A suitable driving tool and the applicable retention arrangement remain separate choices.
Specifications & supplied details
| Detail | Specification |
|---|---|
| Receiving interface | Specified SunTour four-notch freewheels |
| Contact layout | Four projecting engagement tabs |
| Maker’s approximate outside contact | 24 mm |
| Center clearance | 10 mm |
| Drive | 1 in base; separate driving tool |
| Body | Heat-treated alloy tool steel |
Choose for your actual setup
Match all receiving contacts
A similar overall diameter is not enough if the notch pattern differs. Use the actual four-notch fitting and exact freewheel identification.
Separate the tools you need
The remover, its driving wrench and any retention hardware have different roles. A use photograph does not make them one supplied kit.
Fit checks & limits
- The two-notch SunTour interface calls for FR-2 rather than this tool.
- No universal cassette-lockring fit is established by the generic cassette/freewheel category wording.
Questions before you choose
Does the SunTour name alone make it the right remover?
No. The exact four-notch system is the relevant feature. The two-notch system uses FR-2, and other receiving patterns require their own tool.
Is the turning handle included?
This reference is a remover socket with one-inch driving flats. A compatible separate wrench, socket or vise arrangement is required for the intended driving role.
Guides for this choice
Alternatives to compare
Selected listing details, manufacturer information and source images were compared. No hands-on trial or universal fit is claimed. Product identifier: B001B6NC48.