Öhlins Cylinder head TTX36The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 21877-01 |
| Category | Cylinder Heads |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Cylinder head TTX36, Öhlins part number 21877-01. Öhlins hones its tubes to a defined surface finish rather than simply to a diameter.
Key Features
- Original Öhlins service part
- Öhlins part number 21877-01
Where It Sits
There is no measurement to check here — the number and the exploded view identify it. Corrosion inside a tube is terminal: it cannot be honed out without changing the clearance. It is the part that keeps oil in and grit out, which is why it is replaced whenever the unit weeps. Öhlins turns and hones each tube to a defined roundness, because an out-of-round bore leaks past the piston.
Why the Original
An original part keeps the unit within its published specification; a near-equivalent quietly moves it. The part number is the contract: it defines material, dimension and finish together. We can check the number against the Öhlins exploded view before you order — just ask. The exploded drawing for your unit names the number; if you do not have it, we do.
Identifying the Right Part
Öhlins identifies this position by the number 21877-01 in the exploded view for the unit it belongs to. This position has no published dimension, so the part number is the only reliable identifier. The tube is what the whole damper is built around: everything else references its bore. It is the part that keeps oil in and grit out, which is why it is replaced whenever the unit weeps.
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: 21877-01
- Category: Cylinder Heads
- Country of Origin: Sweden
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