Öhlins Valve adjuster MIMÖhlins Valve adjuster MIM
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number21044-15
CategoryAdjusters
Country of OriginSweden
DescriptionThe whole story▼

Valve adjuster MIM, Öhlins part number 21044-15. Compression and rebound adjusters are not interchangeable even when they look similar.

Key Features

  • Öhlins part number 21044-15
  • Original Öhlins service part

Function

Öhlins publishes no separate dimension for this position, so the part number carries the identity. Needle and seat together meter the bleed flow; damage to either changes the whole adjustment range. Hydraulic preload adjusters are sealed and pressurised; they are replaced as a unit. Electronically controlled adjusters replace the needle with a solenoid but keep the same hydraulics.

Why the Original

The part number is the contract: it defines material, dimension and finish together. Parts remain available years after a unit leaves the current price list, which is unusual in this trade. Order by part number — descriptions repeat across sizes, numbers do not. Ask us before ordering if you are unsure: a wrong part in a pressurised unit is an expensive lesson.

Getting the Number Right

Part number 21044-15 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. Where no measurement is given, the drawing position is what identifies the part. Detent balls and springs are separate parts because they wear before the housing does. Hydraulic preload adjusters are sealed units and are replaced rather than opened.

A damper that can be rebuilt is a damper that stays on the bike; that is the whole argument for original service parts.

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: 21044-15
  • Category: Adjusters
  • Country of Origin: Sweden
07 · Support

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