Öhlins Reservoir end 44/M12
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number05865-01
CategoryReservoirs
ThreadM12
Country of OriginSweden
DescriptionThe whole story▼

Reservoir end 44/M12, Öhlins part number 05865-01. A soft reservoir usually means the bladder has failed rather than the gas has leaked.

Key Features

  • Öhlins part number 05865-01
  • Original Öhlins service part
  • Thread M12

What It Is

Öhlins publishes thread M12 for 05865-01 — the dimensions are the identity of the part. A soft reservoir usually means the bladder has failed rather than the gas leaked. A hose-mounted reservoir lets the damper be fitted where a piggyback would not go. Hose-mounted reservoirs allow installation where a piggyback would foul the chassis.

Why the Original

Buying the individual part rather than a complete assembly is what makes servicing an Öhlins unit worthwhile. The part is identical to what Öhlins fits in production — same supplier, same specification. Order by part number — descriptions repeat across sizes, numbers do not. Service parts are supplied per piece unless the description says otherwise.

Getting the Number Right

Öhlins identifies this position by the number 05865-01 in the exploded view for the unit it belongs to. The thread is M12. Hose length is specific to the installation and cannot be substituted freely. The separating piston or bladder inside keeps gas and oil apart; if it fails, the damping goes with it.

Suspension is one of the few areas where the original part is genuinely the cheaper decision.

Fitting and Setup Service

Öhlins recommends that its units are serviced by an authorised centre. We are one: rebuild, revalve and setup all happen in our own workshop.

Specifications

  • Brand: Öhlins
  • Part Number: 05865-01
  • Category: Reservoirs
  • Thread: M12
  • Country of Origin: Sweden
07 · Support

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