Öhlins Shims 20/30/0.38The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 03309-02 |
| Category | Shims |
| Inner Diameter | 20 mm |
| Outer Diameter | 30 mm |
| Thickness | 0.38 mm |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Shims 20/30/0.38, Öhlins part number 03309-02. Suspension technicians keep these in stock by size because a revalve means changing several at once.
Key Features
- Inner Diameter 20 mm
- Original Öhlins service part
- Outer Diameter 30 mm
- Öhlins part number 03309-02
- Thickness 0.38 mm
Where It Sits
This one measures 20 mm, 30 mm, 0.38 mm, and those figures are what separate it from the neighbouring numbers. A shim is a thin steel washer, and a stack of them is what actually generates damping in an Öhlins unit — the oil has to bend them out of the way to pass. Öhlins grinds shims to a flatness tolerance because the faces have to seal against each other. Öhlins stamps and grinds its shims to tolerances a general-purpose washer never holds.
Why the Original
The part number is the contract: it defines material, dimension and finish together. Öhlins supports its suspension with individual service parts, which is why a fifteen-year-old damper can still be rebuilt to specification. 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. For a full rebuild, the seal kit plus the wear parts is usually the sensible order.
How to Be Sure It Fits
Part number 03309-02 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. The published dimensions are inner diameter 20 mm, outer diameter 30 mm, thickness 0.38 mm — measure the old part against them if you are unsure. Outer diameter sets the lever the oil works against; thickness sets how hard it resists. Outer diameter sets the lever the oil works against, and thickness sets the resistance.
Fitting and Setup Service
Fitting service parts means opening a pressurised unit. As an authorised Öhlins service centre we do that here, with the right tools and a dyno check afterwards — just ask.
Specifications
- Brand: Öhlins
- Part Number: 03309-02
- Category: Shims
- Inner Diameter: 20 mm
- Outer Diameter: 30 mm
- Thickness: 0.38 mm
- Country of Origin: Sweden
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