Öhlins Shock Spring 90 N/mm / 135 mm / Ø 46 mm
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number60281-29
Spring Rate90 N/mm
Free Length135 mm
Inner Diameter46 mm
Stroke55 mm
ConstructionStraight
FinishPowder-coated yellow
Country of OriginSweden
DescriptionThe whole story▼

Öhlins part number 60281-29 is a shock absorber spring rated at 90 N/mm, 135 mm long with a 46 mm inner diameter. A rear spring matched to rider and load keeps the chassis attitude where the factory intended it.

Key Features

  • Free length 135 mm
  • Measured spring rate 90 N/mm
  • Inner diameter 46 mm
  • Powder-coated yellow
  • Straight-wound, constant rate
  • 55 mm of usable stroke
  • Öhlins part number 60281-29

Manufacture and Tolerance

Machining, anodising, assembly and testing all happen in the same building rather than across a supply chain. The unit is rebuildable: seals, shims and oil are catalogue items, not a reason to buy a new one. Rates are offered in defined steps, so a change can be made in one direction at a time.

Dimensions

The 46 mm bore and 135 mm length are the two figures that decide whether it physically fits; 90 N/mm decides whether it suits the rider.

Where This Rate Belongs

This end of the range suits heavier riders, two-up use, or a machine ridden hard enough that fork dive becomes the limit. If the suspension bottoms out or the geometry collapses under load, this is the direction to go. Heavier riders, two-up use and track days all push the choice towards this end. 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.

What the Rear Spring Decides

Preload adjusts sag within a rate; it does not change the rate, and no amount of it will rescue a spring that is wrong. Static sag at the rear sets the whole chassis attitude — get it wrong and the front geometry goes with it. The rear spring carries the rider, the pillion and the luggage; the front carries only part of it.

Applications

The safest way to choose is by static sag: set the target figure, and the rate follows from whether you can reach it with preload. Where Öhlins lists this size against a particular unit, the listing is a starting point rather than a boundary. Öhlins offers rates in defined steps so a change can be made in one direction at a time rather than by guesswork.

Installation

A spring that is the correct length still needs the preload spacer checked, since installed length is what sets sag. Springs are supplied ready to fit; no cutting, grinding or packing is needed. If the fork has not been serviced recently, bushes and seals are worth replacing while it is apart.

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

Öhlins suspension rewards careful fitting. We recommend having the work done by an authorised Öhlins service centre — and we are one ourselves: we fit, service and set up Öhlins components in house. If you would like us to handle the installation, just ask and we will quote it with the order.

Specifications

  • Brand: Öhlins
  • Part Number: 60281-29
  • Spring Rate: 90 N/mm
  • Free Length: 135 mm
  • Inner Diameter: 46 mm
  • Stroke: 55 mm
  • Construction: Straight
  • Finish: Powder-coated yellow
  • Country of Origin: Sweden
FitmentWhich bikes this fits▼
    07 · Support

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