Öhlins Adjustment housing M46.5x1/49.5/19
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number21976-07
CategoryAdjustment Housings
Dimension A1 mm
Dimension B49.5 mm
Dimension C19 mm
ThreadM46.5x1
Country of OriginSweden
DescriptionThe whole story▼

Adjustment housing M46.5x1/49.5/19, Öhlins part number 21976-07. The adjustment housing carries the needle, its seat and the detent mechanism.

Key Features

  • Dimension C 19 mm
  • Thread M46.5x1
  • Dimension B 49.5 mm
  • Original Öhlins service part
  • Öhlins part number 21976-07
  • Dimension A 1 mm

What It Is

Dimensionally this is 1 mm, 49.5 mm, 19 mm, which is how it is told apart from the rest of the range. Öhlins specifies a defined number of clicks per adjuster so a setting is a number, not an impression. Hydraulic preload adjusters are sealed and pressurised; they are replaced as a unit. Öhlins builds click adjusters with defined detents so a setting can be written down and returned to.

Genuine Service Part

The alternative to a service part is usually a new damper, which is why this catalogue exists. The part number is the contract: it defines material, dimension and finish together. If you are between two sizes, send us the measurement and we will check it against the catalogue. Öhlins numbers do not follow a logic you can guess — always read them from the documentation.

Getting the Number Right

Part number 21976-07 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. dimension a 1 mm, dimension b 49.5 mm, dimension c 19 mm is what distinguishes this number from its neighbours in the range. Adjuster housings carry seals, and a leak there empties the damper as surely as a shaft seal. The adjuster is the part a rider actually touches, and its detents are what make a setting repeatable.

Fitting and Setup Service

Fitting service parts means opening a pressurised unit. As an authorised Öhlins service centre we do that here, with the right tools and a dyno check afterwards — just ask.

Specifications

  • Brand: Öhlins
  • Part Number: 21976-07
  • Category: Adjustment Housings
  • Dimension A: 1 mm
  • Dimension B: 49.5 mm
  • Dimension C: 19 mm
  • Thread: M46.5x1
  • Country of Origin: Sweden
07 · Support

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