The job
A removal tube for the selected RT-1 scope; a separate mallet and installation press serve different steps.
Park Tool · Headset cup remover
Park Tool RT-1 Headset Cup Remover
A removal tube for the selected RT-1 scope; a separate mallet and installation press serve different steps.
$42.95Nov 7, 26, 12:54 AM · New York
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- Named headset systems 1; 1-1/8; 1-1/4 in
- Named SHIS codes EC29; EC30; EC33; EC34; EC37
- Cup/bearing inside diameter 27–38 mm
Named headset systems
1; 1-1/8; 1-1/4 in
Identify which part is being removed
A frame cup and a fork crown race require different receiving contacts.
What this choice changes
Flared engagement behind supported frame cups
The RT-1 passes through the frame and expands its flared fingers behind the supported cup. A separate mallet drives the removal step. This is a frame-cup remover, not the crown-race tool used on the fork and not the press that installs a replacement cup.
For the selected RT-1, Park Tool lists 1, 1-1/8 and 1-1/4-inch headset systems, including SHIS EC29, EC30, EC33, EC34 and EC37. Its cup/bearing inside-diameter scope is 27–38 mm, while the shaft outside diameter is nominally 25.4 mm. Those dimensions serve different fit checks; neither is a universal fork diameter.
The maker also names specific press-fit bottom-bracket applications, but a DUB or Campagnolo family name alone is insufficient. Match the actual cup engagement and component service instructions. Choose BBT-90.3 when its different removal profile and supplied installation bushings fit the bottom-bracket job.
Specifications & supplied details
| Detail | Specification |
|---|---|
| Selected model | RT-1; not oversized RT-2 |
| Named headset systems | 1; 1-1/8; 1-1/4 in |
| Named SHIS codes | EC29; EC30; EC33; EC34; EC37 |
| Cup/bearing inside diameter | 27–38 mm |
| Shaft outside diameter | 25.4 mm nominal |
| Supplied | One remover; mallet and installation press separate |
Choose for your actual setup
Identify which part is being removed
A frame cup and a fork crown race require different receiving contacts.
Match bore and engagement
Use the cup/bearing bore and exact application, not the nominal shaft size alone.
Fit checks & limits
- No universal DUB or Campagnolo press-fit compatibility.
- Tool fit does not establish that an extracted bearing can be reused.
Questions before you choose
Does this install the replacement cup?
No. It serves removal. Installation needs a suitable press and matched contact adapters.
Is 25.4 mm the whole working range?
No. It is the nominal shaft outside diameter. The maker’s cup/bearing inside-diameter scope is 27–38 mm.
Does this replace a crown-race puller?
No. RT-1 works behind a supported frame cup; a crown-race puller serves the race on the fork.
Guides for this choice
Other equipment to consider
Selected listing details, manufacturer information and source images were compared. No hands-on trial or universal fit is claimed. Product identifier: B000WY8LPK.