The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 21653-08 |
| Category | Adjustment Housings |
| Dimension A | 1.5 mm |
| Dimension B | 34 mm |
| Thread | M48x1.5 |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Adjustment housing M48x1.5/34, Öhlins part number 21653-08. Öhlins builds click adjusters with defined detents so a setting can be written down and returned to.
Key Features
- Dimension A 1.5 mm
- Original Öhlins service part
- Dimension B 34 mm
- Öhlins part number 21653-08
- Thread M48x1.5
Function
The published figures are 1.5 mm, 34 mm. Measure the old part against them before ordering. Öhlins specifies a defined number of clicks per adjuster so a setting is a number, not an impression. Compression and rebound adjusters are not interchangeable even when they look similar. The adjuster knob is what the rider touches, and Öhlins colour-codes it by function.
Genuine Service Part
Öhlins manufactures service parts on the same lines as production parts — there is no second quality. The tolerances here are the ones the unit was assembled to, not a pattern equivalent's interpretation of them. The Öhlins exploded view names the number for each position; we can look it up if you do not have it. Service parts are supplied per piece unless the description says otherwise.
Getting the Number Right
If the unit is already open, compare the dimensions below with the part in your hand before ordering 21653-08. dimension a 1.5 mm, dimension b 34 mm is what distinguishes this number from its neighbours in the range. Needle and seat together meter the bleed flow; damage to either changes the whole adjustment range. Hydraulic preload adjusters are sealed units and are replaced rather than opened.
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: 21653-08
- Category: Adjustment Housings
- Dimension A: 1.5 mm
- Dimension B: 34 mm
- Thread: M48x1.5
- Country of Origin: Sweden
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