The job
A remover socket for the supported freewheel interface, with a separate one-inch driving tool required.
Park Tool · Threaded-freewheel remover
Park Tool FR-1.3 Freewheel Remover
A remover socket for the supported freewheel interface, with a separate one-inch driving tool required.
$9.95Nov 7, 26, 12:51 AM · New York
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- Receiving interface 12-spline threaded-freewheel fitting
- Maker’s approximate contact diameter 22.6 mm; not a universal fit cutoff
- Maker’s center clearance 15 mm
Receiving interface
12-spline threaded-freewheel fitting
Distinguish the mechanism
A threaded freewheel and a cassette lockring call for different receiving interfaces. Twelve splines alone do not establish interchangeability with FR-5.2.
What this choice changes
A 12-spline fitting for a threaded freewheel
The FR-1.3 targets the removal fitting in a threaded freewheel. It is not selected in the same way as a cassette lockring tool, even though both can be described as having twelve splines. Establish whether the bicycle has the relevant freewheel system and match the actual receiving pattern before comparing names or socket shapes.
Park Tool specifies approximately 22.6 mm across this twelve-spline contact and a 15 mm center clearance, with one-inch wrench flats. The exact model page names common supported 5–10-speed freewheel fittings; it directs Falcon applications to a different tool. That is a fit list, not universal compatibility with every freewheel from a named brand.
The offer is the FR-1.3 revision, supplied as a separate remover socket. Check the 15 mm center clearance against the actual axle access as well as matching the spline contact. A suitable wrench, socket or vise arrangement is chosen separately; a category label does not make the one-tool offer a complete removal kit.
Specifications & supplied details
| Detail | Specification |
|---|---|
| Receiving interface | 12-spline threaded-freewheel fitting |
| Maker’s approximate contact diameter | 22.6 mm; not a universal fit cutoff |
| Maker’s center clearance | 15 mm |
| Drive | 1 in wrench flats |
| Body | Heat-treated alloy tool steel, as specified by Park Tool |
| Selected package | One remover socket; driving tool separate |
Choose for your actual setup
Distinguish the mechanism
A threaded freewheel and a cassette lockring call for different receiving interfaces. Twelve splines alone do not establish interchangeability with FR-5.2.
Check axle access
Match the actual fitting and axle clearance as well as the named freewheel system. The driving wrench is a separate requirement.
Fit checks & limits
- Falcon and other unlisted receiving systems are not made compatible by a similar-looking socket.
- The title’s Uniglide wording is not a universal claim for Shimano cassette lockrings.
Questions before you choose
Why not use the twelve-spline FR-5.2 instead?
The FR-5.2 addresses a different cassette-lockring fitting. Spline count alone does not make its contact interchangeable with this threaded-freewheel remover.
Which axle-clearance detail matters here?
Park Tool specifies a 15 mm central bore to clear 14 mm solid axles on the supported applications. Match the actual assembly and exact FR-1.3 revision rather than relying only on its general twelve-spline appearance.
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: B01FI8WWZY.