Öhlins Hydraulic stop piston 28.2/16.4/4.6
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number15441-02
CategoryPistons
Dimension A28.2 mm
Dimension B16.4 mm
Dimension C4.6 mm
Country of OriginSweden
DescriptionThe whole story▼

Hydraulic stop piston 28.2/16.4/4.6, Öhlins part number 15441-02. Öhlins machines its pistons so the port edges stay sharp and the flow predictable.

Key Features

  • Dimension A 28.2 mm
  • Öhlins part number 15441-02
  • Dimension B 16.4 mm
  • Dimension C 4.6 mm
  • Original Öhlins service part

Function

28.2 mm, 16.4 mm, 4.6 mm: that is the whole specification, and it has to match what came out. Piston bands are consumables — they wear against the bore and lose their seal gradually. Rebuilding a piston means keeping the shim order, because the stack is the tuning. Valves and needles set the adjustable part of the damping; the piston sets the rest.

Genuine Service Part

The part number is the contract: it defines material, dimension and finish together. The part is identical to what Öhlins fits in production — same supplier, same specification. Öhlins parts are unit-specific: a close dimension is not a substitute. Where a number has been superseded, Öhlins states the replacement — we pass that on.

Getting the Number Right

Öhlins identifies this position by the number 15441-02 in the exploded view for the unit it belongs to. dimension a 28.2 mm, dimension b 16.4 mm, dimension c 4.6 mm is what distinguishes this number from its neighbours in the range. Öhlins machines its pistons rather than sintering them, which is why the port edges stay sharp. Needle geometry sets the shape of the adjustable range, not just its size.

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: 15441-02
  • Category: Pistons
  • Dimension A: 28.2 mm
  • Dimension B: 16.4 mm
  • Dimension C: 4.6 mm
  • Country of Origin: Sweden
07 · Support

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08 · Paddock

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