Öhlins Piston 8/25/1.5 Compression
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number01670-03
CategoryPistons
Dimension A8 mm
Dimension B25 mm
Dimension C1.5 mm
Country of OriginSweden
DescriptionThe whole story▼

Piston 8/25/1.5 Compression, Öhlins part number 01670-03. The piston carries the shim stacks and meters the oil through its ports.

Key Features

  • Original Öhlins service part
  • Dimension C 1.5 mm
  • Dimension B 25 mm
  • Öhlins part number 01670-03
  • Dimension A 8 mm

Where It Sits

Öhlins publishes 8 mm, 25 mm, 1.5 mm for 01670-03 — the dimensions are the identity of the part. Öhlins machines its pistons so the port edges stay sharp and the flow predictable. Replacing a piston is a workshop job because the shim stack has to be rebuilt in the correct order. The seat face has to be flat enough for the first shim to seal against it.

Genuine Service Part

Öhlins supports units that are decades old, which is why the spare parts list runs to thousands of numbers. This is an original Öhlins part, not an aftermarket equivalent — the tolerances are the ones the unit was assembled to. Tell us the damper's model designation and year and we will match the number for you. Order by part number. The dimensions below are the ones Öhlins publishes for it.

How to Be Sure It Fits

If the unit is already open, compare the dimensions below with the part in your hand before ordering 01670-03. The published dimensions are dimension a 8 mm, dimension b 25 mm, dimension c 1.5 mm — measure the old part against them if you are unsure. Jets meter fixed bleed flow and are sized in tenths of a millimetre. A scored piston face means oil bypasses the shims entirely.

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: 01670-03
  • Category: Pistons
  • Dimension A: 8 mm
  • Dimension B: 25 mm
  • Dimension C: 1.5 mm
  • Country of Origin: Sweden
07 · Support

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