Öhlins Shaft extension 14/M17/27
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number21021-27
CategoryDamper Shafts
Diameter17 mm
Length27 mm
ThreadM17
Country of OriginSweden
DescriptionThe whole story▼

Shaft extension 14/M17/27, Öhlins part number 21021-27. The shaft is threaded at both ends: piston at one, mounting at the other.

Key Features

  • Length 27 mm
  • Diameter 17 mm
  • Thread M17
  • Öhlins part number 21021-27
  • Original Öhlins service part

Function

Dimensionally this is 17 mm, 27 mm, which is how it is told apart from the rest of the range. Corrosion on a stored damper usually starts on the exposed shaft. Adjuster shafts run inside the main shaft on units with a rod-through adjuster. The shaft is threaded at both ends: piston at one, mounting at the other.

Why the Original

The part number is the contract: it defines material, dimension and finish together. Öhlins lists this part under its own number in the service catalogue so a workshop can order exactly what it needs. If you are between two sizes, send us the measurement and we will check it against the catalogue. Order by part number. The dimensions below are the ones Öhlins publishes for it.

How to Be Sure It Fits

The reliable route is the exploded drawing: find the position, read the number, order it — 21021-27 in this case. diameter 17 mm, length 27 mm is what distinguishes this number from its neighbours in the range. Chrome or nitride treatment is what lets the shaft run in a seal for thousands of kilometres. Öhlins hardens and surface-treats its shafts because a scratch on the running surface takes the seal with it.

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: 21021-27
  • Category: Damper Shafts
  • Diameter: 17 mm
  • Length: 27 mm
  • Thread: M17
  • Country of Origin: Sweden
07 · Support

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08 · Paddock

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