The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 21632-04 |
| Category | Preload Tubes |
| Dimension A | 39 mm |
| Dimension B | 112 mm |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Preloadtube,Polym Ø26/Ø39/112, Öhlins part number 21632-04. Öhlins builds click adjusters with defined detents so a setting can be written down and returned to.
Key Features
- Dimension A 39 mm
- Öhlins part number 21632-04
- Original Öhlins service part
- Dimension B 112 mm
Function
Öhlins gives it as 39 mm, 112 mm; nothing about that is approximate. Detent balls and springs are separate parts because they wear before the housing does. Adjuster housings carry seals, and a leak there empties the damper as surely as a shaft seal. Its length defines the preload range available on the unit.
Genuine Service Part
Every part in this catalogue is one Öhlins fits itself during assembly and service. Parts remain available years after a unit leaves the current price list, which is unusual in this trade. Öhlins numbers do not follow a logic you can guess — always read them from the documentation. Service parts are ordered per piece unless stated otherwise.
Getting the Number Right
21632-04 is the Öhlins number for this position — the same one printed in the service documentation. Öhlins states dimension a 39 mm, dimension b 112 mm for this number, and those figures are the deciding ones. Needle and seat together meter the bleed flow; damage to either changes the whole adjustment range. A worn adjuster loses its clicks, and with them any chance of a methodical setup.
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: 21632-04
- Category: Preload Tubes
- Dimension A: 39 mm
- Dimension B: 112 mm
- Country of Origin: Sweden
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