The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 15039-01 |
| Category | Pistons |
| Dimension A | 12 mm |
| Dimension B | 46 mm |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Piston 12/46 sintered, Öhlins part number 15039-01. A scored piston face means oil bypasses the shims entirely.
Key Features
- Dimension A 12 mm
- Original Öhlins service part
- Dimension B 46 mm
- Öhlins part number 15039-01
Where It Sits
The published figures are 12 mm, 46 mm. Measure the old part against them before ordering. Port area and seat geometry decide the damping before any adjuster is touched. Needle geometry sets the shape of the adjustable range, not just its size. Port area sets how much oil can pass before the shims begin to lift.
Genuine Service Part
Öhlins is one of the few suspension makers that still supplies every position in the exploded view as a single part. Öhlins manufactures service parts on the same lines as production parts — there is no second quality. Tell us the damper's model designation and year and we will match the number for you. Order by part number — descriptions repeat across sizes, numbers do not.
Getting the Number Right
15039-01 is the Öhlins number for this position — the same one printed in the service documentation. Check dimension a 12 mm, dimension b 46 mm against what you have removed; a close size is not the same part. Valves and needles set the adjustable part of the damping; the piston sets the rest. A check valve holds pressure in one direction and opens in the other; a worn one lets damping bleed away.
Fitting and Setup Service
Ask us about a full service: as an authorised Öhlins centre we strip, inspect, replace what is worn and set the unit back to its specification.
Specifications
- Brand: Öhlins
- Part Number: 15039-01
- Category: Pistons
- Dimension A: 12 mm
- Dimension B: 46 mm
- Country of Origin: Sweden
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