Öhlins Base valve, 3mmÖhlins Base valve, 3mm
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number21625-01
CategoryValves
Country of OriginSweden
DescriptionThe whole story▼

Base valve, 3mm, Öhlins part number 21625-01. The piston carries the shim stacks and meters the oil; its port layout is what makes an Öhlins damper behave the way it does.

Key Features

  • Original Öhlins service part
  • Öhlins part number 21625-01

Where It Sits

Öhlins publishes no separate dimension for this position, so the part number carries the identity. Rebuilding a piston means keeping the shim order, because the stack is the tuning. The seat face has to be flat enough for the first shim to seal against it. Jets meter fixed bleed flow and are sized in tenths of a millimetre.

Why the Original

Suspension is one of the few areas where the original part is genuinely the cheaper decision. Öhlins keeps service parts available for units long after they leave the current price list. 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

Part number 21625-01 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. Where no measurement is given, the drawing position is what identifies the part. Valves and needles set the adjustable part of the damping; the piston sets the rest. Piston bands are consumables — they wear against the bore and lose their seal gradually.

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: 21625-01
  • Category: Valves
  • Country of Origin: Sweden
07 · Support

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