Öhlins Piston holder 8/49/M12x1.25
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number03172-02
CategoryPiston Holders
Dimension A8 mm
Dimension B49 mm
ThreadM12x1.25
Country of OriginSweden
DescriptionThe whole story▼

Piston holder 8/49/M12x1.25, Öhlins part number 03172-02. Öhlins machines its pistons rather than sintering them, which is why the port edges stay sharp.

Key Features

  • Thread M12x1.25
  • Dimension B 49 mm
  • Original Öhlins service part
  • Dimension A 8 mm
  • Öhlins part number 03172-02

What It Is

At 8 mm, 49 mm it fits one position only; the next size up carries a different number. Twin-tube pistons have separate paths for compression and rebound, which is the whole point of the design. Öhlins uses a piston band rather than metal-to-metal contact, which is what keeps the bore intact. Rebuilding a piston means keeping the shim order, because the stack is the tuning.

Original Öhlins Part

The alternative to a service part is usually a new damper, which is why this catalogue exists. Öhlins supports its suspension with individual service parts, which is why a fifteen-year-old damper can still be rebuilt to specification. Service parts are ordered per piece unless stated otherwise. Tell us the damper's model designation and year and we will match the number for you.

Identifying the Right Part

The reliable route is the exploded drawing: find the position, read the number, order it — 03172-02 in this case. dimension a 8 mm, dimension b 49 mm is what distinguishes this number from its neighbours in the range. Port area and shim seat geometry decide the damping curve before any adjuster is touched. Needle geometry sets the shape of the adjustable range, not just its size.

Fitting and Setup Service

We are an authorised Öhlins service centre, so you do not have to source the tools and the nitrogen: send us the damper and we rebuild it with the correct parts and the correct setting.

Specifications

  • Brand: Öhlins
  • Part Number: 03172-02
  • Category: Piston Holders
  • Dimension A: 8 mm
  • Dimension B: 49 mm
  • Thread: M12x1.25
  • Country of Origin: Sweden
07 · Support

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08 · Paddock

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