Öhlins Fork Springs 10.0 N/mm / 300 mm / Ø 25.5 mm
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number08423-10
Spring Rate10.0 N/mm
Free Length300 mm
Inner Diameter25.5 mm
Stroke163 mm
ConstructionStraight
Packaging UnitPair
Country of OriginSweden
DescriptionThe whole story▼

Öhlins part number 08423-10 is a pair of fork springs rated at 10.0 N/mm, 300 mm long with a 25.5 mm inner diameter. Getting the rate right restores the static sag the chassis was designed around.

Key Features

  • Öhlins part number 08423-10
  • Free length 300 mm
  • Supplied as a pair
  • Straight-wound, constant rate
  • 163 mm of usable stroke
  • Inner diameter 25.5 mm
  • Measured spring rate 10.0 N/mm

How Öhlins Makes Them

Öhlins sets a baseline for each part number on the machine it was developed on, so it works before anything is adjusted. Öhlins winds, heat-sets and then measures every spring individually — the rate on the label is the rate you get. Anodising is hard-coat rather than decorative, which matters on a component exposed to road salt and stone chips.

The Numbers That Matter

At 300 mm free length and 25.5 mm inner diameter, this spring is dimensionally interchangeable with anything of the same size — the rate is what makes it a different part.

Where This Rate Belongs

Firm rates trade some small-bump comfort for support — the right trade on a good surface at speed. Firm rates also suit machines carrying luggage as a matter of course. A firm rate holds the chassis attitude when the front or rear is loaded hard. A road machine spends most of its life in the first third of the fork's travel — that is the part the rate governs.

Applications

Ask us with the machine and rider weight and we will tell you which rate in this size to take. Sag figures, not feel, decide whether a rate is right. Öhlins publishes the targets for its own units. Where Öhlins lists this size against a particular unit, the listing is a starting point rather than a boundary.

Installation

Öhlins states an air gap for this application, and that figure is part of the setting rather than a detail. Rate and preload are separate adjustments: get the rate right first, then set sag with preload. The job needs no special tools beyond a fork spring compressor and a measuring rod for the oil level.

Road Approval

Road approval: a spring is a like-for-like replacement of a wear part and carries no separate type approval. Where Öhlins states an approval for a particular motorcycle, it is named under Applications.

Fitting and Setup Service

This is not a part to rush. Öhlins recommends installation by an authorised service centre, and we are an authorised Öhlins service centre — fitting, servicing and setup all happen here. Get in touch if you would like the work done with the order.

Specifications

  • Brand: Öhlins
  • Part Number: 08423-10
  • Spring Rate: 10.0 N/mm
  • Free Length: 300 mm
  • Inner Diameter: 25.5 mm
  • Stroke: 163 mm
  • Construction: Straight
  • Packaging Unit: Pair
  • Country of Origin: Sweden
FitmentWhich bikes this fits▼
    07 · Support

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    08 · Paddock

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