Öhlins OEM EC adjuster Ø34 assy SA black
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number21704-84
CategoryAdjusters
FinishBlack
Country of OriginSweden
DescriptionThe whole story▼

OEM EC adjuster Ø34 assy SA black, Öhlins part number 21704-84. Detent balls and springs are separate parts because they wear before the housing does.

Key Features

  • Finish: black
  • Öhlins part number 21704-84
  • Original Öhlins service part

What It Is

This position is identified by its number rather than by a dimension. Hydraulic preload adjusters are sealed units and are replaced rather than opened. Hydraulic preload adjusters are sealed and pressurised; they are replaced as a unit. Click adjusters work through a needle in a seat; the detent spring gives the clicks their feel.

Genuine Service Part

Rebuilding to specification only works if the parts are to specification — that starts here. Öhlins keeps service parts available for units long after they leave the current price list. Order by part number. The dimensions below are the ones Öhlins publishes for it. Order by part number — descriptions repeat across sizes, numbers do not.

Getting the Number Right

If the unit is already open, compare the dimensions below with the part in your hand before ordering 21704-84. Öhlins does not publish a dimension here — go by the number and the exploded view. Click adjusters work through a needle in a seat; the detent spring gives the clicks their feel. Needle and seat together meter the bleed flow; damage to either changes the whole adjustment range.

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: 21704-84
  • Category: Adjusters
  • Finish: Black
  • Country of Origin: Sweden
07 · Support

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