Öhlins Shims 8/21/0.20The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 00186-21 |
| Category | Shims |
| Inner Diameter | 8 mm |
| Outer Diameter | 21 mm |
| Thickness | 0.20 mm |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Shims 8/21/0.20, Öhlins part number 00186-21. A coned or marked shim is finished — it no longer seals against its neighbour.
Key Features
- Original Öhlins service part
- Inner Diameter 8 mm
- Öhlins part number 00186-21
- Outer Diameter 21 mm
- Thickness 0.20 mm
Where It Sits
At 8 mm, 21 mm, 0.20 mm it fits one position only; the next size up carries a different number. Changing one shim in a stack alters the damping curve measurably; that is why Öhlins sells them individually rather than only as sets. Öhlins stamps and grinds its shims to tolerances a general-purpose washer never holds. Outer diameter sets the lever the oil works against; thickness sets how hard it resists.
Original Öhlins Part
Öhlins supports units that are decades old, which is why the spare parts list runs to thousands of numbers. The alternative to a service part is usually a new damper, which is why this catalogue exists. If you are unsure which number your unit takes, send us the model and serial number of the damper and we will look it up. Service parts are supplied per piece unless the description says otherwise.
Getting the Number Right
Part number 00186-21 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. Check inner diameter 8 mm, outer diameter 21 mm, thickness 0.20 mm against what you have removed; a close size is not the same part. A coned or marked shim is finished — it no longer seals against its neighbour. Öhlins holds thickness to hundredths of a millimetre because that is the resolution damping changes at.
Fitting and Setup Service
A damper rebuild is workshop work: it needs the unit dismantled, the shim stack rebuilt in the correct order and the gas charge reset. We are an authorised Öhlins service centre and do exactly that in house — send us the unit or ask us to fit the part with your order.
Specifications
- Brand: Öhlins
- Part Number: 00186-21
- Category: Shims
- Inner Diameter: 8 mm
- Outer Diameter: 21 mm
- Thickness: 0.20 mm
- Country of Origin: Sweden
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