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Easily remove and install over-axle horst bearings
In 2021 Specialized started introducing a new design for the horst pivot (the rear suspension pivot next to the rear dropout). The new design includes a small axle that sits between, and extends through, the two bearings that make each pivot. Because this protruding axle blocks access to the inside of the bearing, conventional bearing pullers and press drifts can't be used on this pivot.
To address this problem, we've created a special version of our wind-out bearing puller. This version has been developed specifically for Specialized's new horst pivot axle. It uses a 6mm bolt to match the bore of the axle. Our tool can be used both to remove the old bearings and to press in the new ones.
The axle is marked 'H' in the image below:
Compatibility
We understand that the following model years use this pivot arrangement:
- Kenevo SL 2022-2023
- Not compatible with Kenevo SL (Gen2) 2024 onwards - see our other version here
- Levo (Gen3) 2022-2024
- Levo (Gen4) 2025 onwards
- Levo SL Carbon 2023 onwards
- Levo SL Alloy 2023 onwards
- Status 2 140/170 2024 onwards
- Stumpjumper Alloy 2021-2023
- Stumpjumper 15 2024 onwards
- Stumpjumper EVO Carbon 2021 onwards
- Stumpjumper EVO Alloy 2022 onwards
This tool is only for Specialized bikes with this type of axle in the horst pivot. If you're bike doesn't have this axle extending through the bearing then our normal Specialized puller and press kits are all you need.
How To Use
This bearing puller tool is simple to use. As well as the puller you will need a 10mm spanner and a 5mm allen key.
To remove a bearing the tool is used in this configuration:
- Assemble the bolt through the small drift, with the head of the bolt inside the countersink in the large end of the drift, like the image above.
- Next install the bolt and drift through the horst axle in the frame, so that the smaller end of the drift is against the horst axle.
- Install the tool's receiving cup on the bolt where it protrudes through the other side of the pivot and add the washer and nut.
- Tightening the nut will push the axle towards the receiving cup, taking one bearing with it.
- It shouldn't require a lot of force. If in doubt, back off and check everything is installed as it should be.
- To remove the second bearing, first place the axle back in the remaining bearing, then repeat the process but with the tool installed on the other side.
To install the new bearing the tool is used in this configuration:
- Assemble the bolt through the small drift, this time with the head of the bolt against the small end of the drift, so that the drift's larger counter-sunk face can face towards the bearing, like the image above.
- Next place a bearing against the drift, followed by the horst axle. The large diameter of the drift should be against the bearing, with the axle fitted against the bearing, fitting through the bearing and into the drift's countersink. It is necessary to include the axle to centre the bearing on the drift.
- Hold the bearing up against it's position in the frame and then install the receiving cup on the other side, followed by the washer and nut.
- Tightening the nut should press the bearing into the frame. There shouldn't be a a lot of resistance. Stop when you feel the resistance rise, indicating that the bearing has reached the bottom of the bore.
- Repeat the above step to install the second bearing.
Note that each tool is specific to one bearing size. It is designed to match the internal and external diameters of the bearing and shouldn't be used on bearings of different size.
If you have any questions contact us and we'll be happy to help.
Shipping & Taxes
We dispatch orders on Monday, Wednesday and Friday. The cut off for dispatch is usually 8am that day.
UK orders are sent by Royal Mail RM24 (First Class).
International orders are welcomed and will be sent by DHL GlobalMail or Royal Mail International Standard (Airmail). These shippers indicate that delivery in Europe should take 3-5 working days and the rest of the world in 5-7 working days, though realistically this is often 5-10 workings days and customs inspections can have an effect.
International orders will pay only once for shipping. Add two or more pullers, presses or kits to the basket to qualify.
Ebay collects tax on behalf of the EU, Norway, Australia, New Zealand and some US states, so your order should arrive in these countries with no further taxes to pay.
Returns and Support
If you have any problems please contact us and we will be happy to resolve them, offering a refund or a replacement as appropriate. Please be assured by our high feedback rating!