The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 01120-04 |
| Category | Shims |
| Inner Diameter | 29 mm |
| Outer Diameter | 32 mm |
| Thickness | 0.20 mm |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Ring shim 29/32/0.20, Öhlins part number 01120-04. A worn or bent shim shows up as damping that has quietly drifted from the setting sheet.
Key Features
- Inner Diameter 29 mm
- Öhlins part number 01120-04
- Thickness 0.20 mm
- Outer Diameter 32 mm
- Original Öhlins service part
What It Is
The published figures are 29 mm, 32 mm, 0.20 mm. Measure the old part against them before ordering. Shim thickness is measured in hundredths of a millimetre because that is the resolution at which damping force changes. Two shims of the same thickness but different diameter give completely different damping. A stack combines several diameters so the curve changes progressively rather than in steps.
Original Öhlins Part
Buying the individual part rather than a complete assembly is what makes servicing an Öhlins unit worthwhile. Every part in this catalogue is one Öhlins fits itself during assembly and service. Öhlins numbers do not follow a logic you can guess — always read them from the documentation. 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.
Getting the Number Right
The reliable route is the exploded drawing: find the position, read the number, order it — 01120-04 in this case. The published dimensions are inner diameter 29 mm, outer diameter 32 mm, thickness 0.20 mm — measure the old part against them if you are unsure. The stack is the tuning: outer diameter sets where the shim bends, thickness sets how hard it resists. Changing one shim in a stack alters the damping curve measurably; that is why Öhlins sells them individually rather than only as sets.
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: 01120-04
- Category: Shims
- Inner Diameter: 29 mm
- Outer Diameter: 32 mm
- Thickness: 0.20 mm
- Country of Origin: Sweden
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