Öhlins Preload tube 28/31/147
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number21676-01
CategoryPreload Tubes
Dimension A28 mm
Dimension B31 mm
Dimension C147 mm
Country of OriginSweden
DescriptionThe whole story▼

Preload tube 28/31/147, Öhlins part number 21676-01. Needle and seat together meter the bleed flow; damage to either changes the whole adjustment range.

Key Features

  • Dimension A 28 mm
  • Dimension C 147 mm
  • Original Öhlins service part
  • Öhlins part number 21676-01
  • Dimension B 31 mm

What It Is

Öhlins publishes 28 mm, 31 mm, 147 mm for 21676-01 — the dimensions are the identity of the part. The preload tube transfers the spring load to the adjuster and sets the installed length. Detent balls and springs are separate parts because they wear before the housing does. Öhlins specifies a defined number of clicks per adjuster so a setting is a number, not an impression.

Original Öhlins Part

The alternative to a service part is usually a new damper, which is why this catalogue exists. Öhlins is one of the few suspension makers that still supplies every position in the exploded view as a single part. Order by part number — descriptions repeat across sizes, numbers do not. Öhlins parts are unit-specific: a close dimension is not a substitute.

How to Be Sure It Fits

The reliable route is the exploded drawing: find the position, read the number, order it — 21676-01 in this case. Check dimension a 28 mm, dimension b 31 mm, dimension c 147 mm against what you have removed; a close size is not the same part. Öhlins builds click adjusters with defined detents so a setting can be written down and returned to. Öhlins specifies a defined number of clicks per adjuster so a setting is a number, not an impression.

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: 21676-01
  • Category: Preload Tubes
  • Dimension A: 28 mm
  • Dimension B: 31 mm
  • Dimension C: 147 mm
  • Country of Origin: Sweden
07 · Support

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