The facts.
| Product | Fork floating bearing (guide bush) |
|---|---|
| Brand | Wilbers |
| Material | Steel with PTFE coating |
| Versions | Inside coating (21 sizes), outside coating (9 sizes) |
| Size format | inner Ø × outer Ø × width |
| Sold | Per piece |
| Part numbers | 584-00xx-00 (inside), 584-00xx-01 (outside) |
DescriptionThe whole story▼
Inside every telescopic fork, two kinds of bush guide the tubes: one rides on the inner tube, the other in the outer tube. Once their PTFE coating wears through to the steel, the fork starts to feel sticky and notchy. Wilbers supplies these floating bearings in steel with a PTFE coating, coated on the inside or on the outside, in 30 sizes.
Key Features
- Steel bush with PTFE coating
- Inside coated version: 21 sizes
- Outside coated version: 9 sizes
- Sold per piece
- Covers fork tubes from 38 to 50 mm
Inside or outside coating
A bush coated on the inside slides on the surface of the tube it surrounds. A bush coated on the outside slides along the bore it sits in. Which one you need depends on where the bush sits in your fork, so take the old part as the reference and match the coating as well as the size.
Reading the size
Sizes are given as inner diameter × outer diameter × width in millimetres. The two flat entries, 49 × 15 × 1.50 mm and 47.70 × 20 × 1 mm, are listed by Wilbers in that form, presumably as strip length × width × thickness; check against your old part before ordering.
When to replace
Look at the bushes at every seal change. Bronze or grey steel showing through the coating means they are due. Worn bushes also let the tubes move sideways, which wears the new seals faster.
Quantity
The price is per piece. A typical fork leg uses one inner and one outer bush, so count what you need for both legs before you order.
Specifications
- Product: Fork floating bearing
- Material: Steel, PTFE coated
- Sizes: 30
- Part numbers: 584-00xx-00 / -01
FitmentWhich bikes this fits▼
Universal product — Please check whether it fits your bike.
Questions, one topic at a time.
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Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
Yes — it’s tested and approved to the current ECE 22.06 standard and road-legal across the EU.
Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
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Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
Our team will personally help you choose the right gear or part — around 24h for a reply.