The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 21646-07 |
| Category | Cylinder Tubes |
| Diameter | 30 mm |
| Length | 34 mm |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Cylinder tube 30/34/350, Öhlins part number 21646-07. The tube carries the end cap threads, so damaged threads mean a new tube rather than a repair.
Key Features
- Length 34 mm
- Original Öhlins service part
- Öhlins part number 21646-07
- Diameter 30 mm
Where It Sits
21646-07 is the 30 mm, 34 mm version — Öhlins lists each size separately. Wall thickness and bore finish are what let a cylinder hold pressure without deforming under load. Tubes are replaced when the bore is marked; polishing them out changes the clearance and makes it worse. A tube that has been bottomed hard often shows a ring mark; that is a reason to replace it.
Genuine Service Part
Every part in this catalogue is one Öhlins fits itself during assembly and service. Öhlins supports units that are decades old, which is why the spare parts list runs to thousands of numbers. The exploded drawing for your unit names the number; if you do not have it, we do. If the unit is already apart, compare the published dimensions with the part in your hand.
Getting the Number Right
21646-07 is the Öhlins number for this position — the same one printed in the service documentation. The published dimensions are diameter 30 mm, length 34 mm — measure the old part against them if you are unsure. Diameter and length together identify the tube — both are specific to the damper it came from. A hard bottoming often leaves a witness ring inside the bore — that tube is finished.
Fitting and Setup Service
We are an authorised Öhlins service centre, so you do not have to source the tools and the nitrogen: send us the damper and we rebuild it with the correct parts and the correct setting.
Specifications
- Brand: Öhlins
- Part Number: 21646-07
- Category: Cylinder Tubes
- Diameter: 30 mm
- Length: 34 mm
- Country of Origin: Sweden
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