Öhlins Adjustment housing M46x1/49/33
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number21976-08
CategoryAdjustment Housings
Dimension A1 mm
Dimension B49 mm
Dimension C33 mm
ThreadM46x1
Country of OriginSweden
DescriptionThe whole story▼

Adjustment housing M46x1/49/33, Öhlins part number 21976-08. Adjuster housings carry seals, and a leak there empties the damper as surely as a shaft seal.

Key Features

  • Dimension B 49 mm
  • Original Öhlins service part
  • Thread M46x1
  • Dimension C 33 mm
  • Dimension A 1 mm
  • Öhlins part number 21976-08

Where It Sits

1 mm, 49 mm, 33 mm: that is the whole specification, and it has to match what came out. The adjuster is the part a rider actually touches, and its detents are what make a setting repeatable. Compression and rebound adjusters are not interchangeable even when they look similar. Öhlins builds click adjusters with defined detents so a setting can be written down and returned to.

Original Öhlins Part

An original part keeps the unit within its published specification; a near-equivalent quietly moves it. The alternative to a service part is usually a new damper, which is why this catalogue exists. The Öhlins exploded view names the number for each position; we can look it up if you do not have it. If the unit is already apart, compare the published dimensions with the part in your hand.

Getting the Number Right

Part number 21976-08 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. Öhlins states dimension a 1 mm, dimension b 49 mm, dimension c 33 mm for this number, and those figures are the deciding ones. The needle tip is the wear part: once rounded, the first few clicks stop doing anything. Thread size identifies where it belongs on the unit.

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: 21976-08
  • Category: Adjustment Housings
  • Dimension A: 1 mm
  • Dimension B: 49 mm
  • Dimension C: 33 mm
  • Thread: M46x1
  • Country of Origin: Sweden
07 · Support

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08 · Paddock

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