The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 66419-019 |
| Spring Rate | 19 N/mm |
| Free Length | 190 mm |
| Inner Diameter | 46 mm |
| Stroke | 115 mm |
| Construction | Straight |
| Finish | Powder-coated black |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Öhlins part number 66419-019 is a shock absorber spring rated at 19 N/mm, 190 mm long with a 46 mm inner diameter. Rear spring rate sets ride height, static sag and how much of the damper's stroke is actually usable.
Key Features
- Straight-wound, constant rate
- Powder-coated black
- Inner diameter 46 mm
- Measured spring rate 19 N/mm
- Free length 190 mm
- 115 mm of usable stroke
- Öhlins part number 66419-019
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. Rates are offered in defined steps, so a change can be made in one direction at a time. Seals are specified for temperature stability rather than for the lowest unit cost.
The Numbers That Matter
Free length 190 mm, inner diameter 46 mm, rate 19 N/mm — those three figures define the part completely.
Where This Rate Belongs
The trade is fork dive under braking — noticeable, but rarely the limiting factor on the road. A soft rate favours grip and comfort over support: the fork moves early, which keeps the tyre loaded on a poor surface. A softer rate keeps the tyre loaded on a poor surface, which is worth more than outright support on most roads. A road machine spends most of its life in the first third of the fork's travel — that is the part the rate governs.
What the Rear Spring Decides
Rear spring rate sets ride height and static sag, and those two decide the chassis attitude before any damping click matters. On a linkage-equipped machine the wheel moves several millimetres for every millimetre the damper moves, and the spring rate has to account for that ratio. A rear spring is the cheapest part of the suspension and the one that decides the most.
Applications
Where Öhlins lists this size against a particular unit, the listing is a starting point rather than a boundary. Selection is by measurement. If the diameter and free length match your fork, the remaining question is the rate. Ask us with the machine and rider weight and we will tell you which rate in this size to take.
What Fitting Involves
The job needs no special tools beyond a fork spring compressor and a measuring rod for the oil level. Torque the fork caps to the manufacturer's figure; the springs change nothing about the assembly torque. Set static sag after fitting; the rate is only right if the sag figure lands where Öhlins specifies.
Road Approval
Road approval: springs are not separately type-approved in Germany because they substitute a part that is already homologated with the fork. Model-specific documents, where they exist, are named above.
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: 66419-019
- Spring Rate: 19 N/mm
- Free Length: 190 mm
- Inner Diameter: 46 mm
- Stroke: 115 mm
- Construction: Straight
- Finish: Powder-coated black
- Country of Origin: Sweden
FitmentWhich bikes this fits▼
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