Öhlins Shock Spring 66 N/mm / 160 mm / Ø 57 mm
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number01091-17
Spring Rate66 N/mm
Free Length160 mm
Inner Diameter57 mm
Stroke86 mm
ConstructionStraight
FinishPowder-coated yellow
Country of OriginSweden
DescriptionThe whole story▼

Öhlins part number 01091-17 is a shock absorber spring rated at 66 N/mm, 160 mm long with a 57 mm inner diameter. Adding a pillion or luggage changes the load enough that the standard rate stops working.

Key Features

  • Öhlins part number 01091-17
  • Straight-wound, constant rate
  • Free length 160 mm
  • Measured spring rate 66 N/mm
  • 86 mm of usable stroke
  • Powder-coated yellow
  • Inner diameter 57 mm

Why the Rate Holds

The wire is progressively wound where the application calls for it and straight where it does not. The Öhlins part number is stamped on the unit, so its specification can be looked up years later. Anodising is hard-coat rather than decorative, which matters on a component exposed to road salt and stone chips.

Dimensions

At 160 mm free length and 57 mm inner diameter, this spring is dimensionally interchangeable with anything of the same size — the rate is what makes it a different part.

What This Rate Does

A firm rate keeps the fork high in its stroke under braking, which preserves the geometry when the front is loaded hard. This end of the range suits heavier riders, two-up use, or a machine ridden hard enough that fork dive becomes the limit. A firm rate holds the chassis attitude when the front or rear is loaded hard. Road surfaces are the hardest test of a spring rate, because the fork has to cope with both a smooth stretch and a broken one.

How a Rear Spring Works

Preload adjusts sag within a rate; it does not change the rate, and no amount of it will rescue a spring that is wrong. Rear spring rate sets ride height and static sag, and those two decide the chassis attitude before any damping click matters. Adding a pillion or luggage changes the rear load enough that the standard rate stops working properly.

Applications

A spring is one of the few suspension parts that is genuinely interchangeable: same bore, same free length, and it goes in. Sag figures, not feel, decide whether a rate is right. Öhlins publishes the targets for its own units. Selection is by measurement. If the diameter and free length match your fork, the remaining question is the rate.

Installation

Öhlins supplies a setting sheet with the springs; the numbers on it assume the specified oil. Preload spacers usually need shortening or lengthening so the installed length stays correct. Öhlins part numbers are stamped on the packaging rather than the spring, so keep the label with the setup notes.

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: 01091-17
  • Spring Rate: 66 N/mm
  • Free Length: 160 mm
  • Inner Diameter: 57 mm
  • Stroke: 86 mm
  • Construction: Straight
  • Finish: Powder-coated yellow
  • Country of Origin: Sweden
FitmentWhich bikes this fits▼
    07 · Support

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    08 · Paddock

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