Öhlins Shock Spring 40 N/mm / 200 mm / Ø 46 mm
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number00181-10
Spring Rate40 N/mm
Free Length200 mm
Inner Diameter46 mm
Stroke110 mm
ConstructionStraight
FinishPowder-coated yellow
Country of OriginSweden
DescriptionThe whole story▼

Öhlins part number 00181-10 is a shock absorber spring rated at 40 N/mm, 200 mm long with a 46 mm inner diameter. Adding a pillion or luggage changes the load enough that the standard rate stops working.

Key Features

  • Inner diameter 46 mm
  • Öhlins part number 00181-10
  • Straight-wound, constant rate
  • Free length 200 mm
  • Measured spring rate 40 N/mm
  • 110 mm of usable stroke
  • Powder-coated yellow

Why the Rate Holds

Anodising is hard-coat rather than decorative, which matters on a component exposed to road salt and stone chips. Shafts are hardened and surface-treated so the seal has a consistent surface to run against. The wire is progressively wound where the application calls for it and straight where it does not.

Size and Rate

The 46 mm bore and 200 mm length are the two figures that decide whether it physically fits; 40 N/mm decides whether it suits the rider.

Choosing 40 N/mm

Mid rates suit a solo rider on a road-going machine with occasional spirited use. If you are unsure and close to average weight in full kit, this is the sensible starting point. This is where most riders of average weight land once static sag has been set to specification. Ride quality on the road is decided by rate first and damping second.

How a Rear Spring Works

A spring that has settled in service sits shorter than new, which quietly lowers the bike and steepens the steering. A rear spring is the cheapest part of the suspension and the one that decides the most. Adding a pillion or luggage changes the rear load enough that the standard rate stops working properly.

Applications

Rate is the variable that depends on the rider, not on the machine. Two people on the same bike may well want two different numbers. Öhlins offers rates in defined steps so a change can be made in one direction at a time rather than by guesswork. Selection is by measurement. If the diameter and free length match your fork, the remaining question is the rate.

What Fitting Involves

If the fork has not been serviced recently, bushes and seals are worth replacing while it is apart. Preload spacers usually need shortening or lengthening so the installed length stays correct. A spring that is the correct length still needs the preload spacer checked, since installed length is what sets sag.

Road Approval

Road approval: no separate certificate. The spring changes the rate, not the construction of the fork, and is treated as a service part.

Fitting and Setup Service

We are an authorised Öhlins service centre, so the installation does not have to be your problem: we fit and set up Öhlins components in our own workshop. Ask us when you order and we will include the work.

Specifications

  • Brand: Öhlins
  • Part Number: 00181-10
  • Spring Rate: 40 N/mm
  • Free Length: 200 mm
  • Inner Diameter: 46 mm
  • Stroke: 110 mm
  • Construction: Straight
  • Finish: Powder-coated yellow
  • Country of Origin: Sweden
FitmentWhich bikes this fits▼
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