Öhlins Dividing piston 32/15
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number21660-01
CategoryPistons
Dimension A32 mm
Dimension B15 mm
Country of OriginSweden
DescriptionThe whole story▼

Dividing piston 32/15, Öhlins part number 21660-01. A check valve holds pressure in one direction and opens in the other; a worn one lets damping bleed away.

Key Features

  • Dimension B 15 mm
  • Dimension A 32 mm
  • Original Öhlins service part
  • Öhlins part number 21660-01

What It Is

21660-01 is the 32 mm, 15 mm version — Öhlins lists each size separately. Öhlins machines its pistons so the port edges stay sharp and the flow predictable. A check valve holds pressure in one direction and opens in the other; a worn one lets damping bleed away. The piston carries the shim stacks and meters the oil through its ports.

Genuine Service Part

Öhlins supports units that are decades old, which is why the spare parts list runs to thousands of numbers. Parts remain available years after a unit leaves the current price list, which is unusual in this trade. If you are between two sizes, send us the measurement and we will check it against the catalogue. Order by part number — descriptions repeat across sizes, numbers do not.

Identifying the Right Part

Order under 21660-01. Where several sizes share a description, only the number separates them. dimension a 32 mm, dimension b 15 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. Öhlins machines its pistons rather than sintering them, which is why the port edges stay sharp.

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: 21660-01
  • Category: Pistons
  • Dimension A: 32 mm
  • Dimension B: 15 mm
  • Country of Origin: Sweden
07 · Support

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08 · Paddock

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