The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 21653-02 |
| Category | Adjustment Housings |
| Dimension A | 1.5 mm |
| Dimension B | 29 mm |
| Thread | M47x1.5 |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Adjustment housing M47x1.5/29, Öhlins part number 21653-02. Needle and seat together meter the bleed flow; damage to either changes the whole adjustment range.
Key Features
- Dimension A 1.5 mm
- Original Öhlins service part
- Thread M47x1.5
- Öhlins part number 21653-02
- Dimension B 29 mm
Where It Sits
21653-02 is the 1.5 mm, 29 mm version — Öhlins lists each size separately. Detent balls and springs are separate parts because they wear before the housing does. Needle and seat together meter the bleed flow; damage to either changes the whole adjustment range. An adjuster that turns without resistance has lost its detent; the setting is then guesswork.
Original Öhlins Part
The part number is the contract: it defines material, dimension and finish together. Öhlins numbers every position so a workshop can order precisely what it needs, not a whole assembly. Order by part number — descriptions repeat across sizes, numbers do not. Send us the model and serial number of your unit and we will confirm the position before you order.
Identifying the Right Part
Part number 21653-02 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. The published dimensions are dimension a 1.5 mm, dimension b 29 mm — measure the old part against them if you are unsure. Click adjusters work through a needle in a seat; the detent spring gives the clicks their feel. Detent balls and springs are separate parts because they wear before the housing does.
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: 21653-02
- Category: Adjustment Housings
- Dimension A: 1.5 mm
- Dimension B: 29 mm
- Thread: M47x1.5
- Country of Origin: Sweden
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