Öhlins Fork Springs 11.5 N/mm / 260 mm / Ø 25.5 mm
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number08790-15
Spring Rate11.5 N/mm
Free Length260 mm
Inner Diameter25.5 mm
Stroke145 mm
ConstructionStraight
Packaging UnitPair
Country of OriginSweden
DescriptionThe whole story

Öhlins part number 08790-15 is a pair of fork springs rated at 11.5 N/mm, 260 mm long with a 25.5 mm inner diameter. Spring rate is the single largest variable in how a front end behaves, and it is the one thing no damping adjuster can compensate for.

Key Features

  • Straight-wound, constant rate
  • Inner diameter 25.5 mm
  • Öhlins part number 08790-15
  • Free length 260 mm
  • 145 mm of usable stroke
  • Measured spring rate 11.5 N/mm
  • Supplied as a pair

How Öhlins Makes Them

The unit is rebuildable: seals, shims and oil are catalogue items, not a reason to buy a new one. Öhlins machines its own critical components instead of buying them in, and the tolerances are where the money goes. Every Öhlins dealer can re-valve the unit, because the shim stack is a documented, serviceable assembly.

Size and Rate

Free length 260 mm, inner diameter 25.5 mm, rate 11.5 N/mm — those three figures define the part completely.

What This Rate Does

A rate this high is track territory or for a heavy rider: it stops the fork collapsing under sustained heavy braking. This is the stiff end of Öhlins' catalogue, chosen when fork dive rather than grip is the limiting factor. Öhlins offers rates this high only where the application genuinely needs them. Ride quality on the road is decided by rate first and damping second.

Applications

Öhlins offers rates in defined steps so a change can be made in one direction at a time rather than by guesswork. Ask us with the machine and rider weight and we will tell you which rate in this size to take. Öhlins builds springs to dimensions rather than to model lists, so the question is always the same: does the diameter fit, does the length fit, and is the rate right for the rider?

What Fitting Involves

Fork oil should be replaced at the same time — it is already out of the leg. Öhlins part numbers are stamped on the packaging rather than the spring, so keep the label with the setup notes. Oil level is measured from the top of the tube with the fork compressed and the spring removed.

Road Approval

Road approval: not applicable to the spring on its own. Öhlins issues approvals against complete suspension units, not individual springs.

Fitting and Setup Service

Fitting matters as much as the part. We are an authorised Öhlins service centre and carry out installation, servicing and setup ourselves — get in touch and we will arrange it alongside your order.

Specifications

  • Brand: Öhlins
  • Part Number: 08790-15
  • Spring Rate: 11.5 N/mm
  • Free Length: 260 mm
  • Inner Diameter: 25.5 mm
  • Stroke: 145 mm
  • Construction: Straight
  • Packaging Unit: Pair
  • Country of Origin: Sweden
FitmentWhich bikes this fits
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    08 · Paddock

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