The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 04799-05 |
| Spring Rate | 10.5 N/mm |
| Free Length | 260 mm |
| Inner Diameter | 25.5 mm |
| Packaging Unit | Pair |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Öhlins part number 04799-05 is a pair of fork springs rated at 10.5 N/mm, 260 mm long with a 25.5 mm inner diameter. A fork that is sprung wrong uses up its travel before the damping has a chance to work.
Key Features
- Supplied as a pair
- Inner diameter 25.5 mm
- Measured spring rate 10.5 N/mm
- Free length 260 mm
- Öhlins part number 04799-05
Manufacture and Tolerance
Each spring is set before it is measured, so it will not settle and lose rate in service. The unit is rebuildable: seals, shims and oil are catalogue items, not a reason to buy a new one. Two units carrying the same part number behave the same way out of the box, which is the whole point of testing each one.
Size and Rate
At 260 mm free length and 25.5 mm inner diameter, this spring is dimensionally interchangeable with anything of the same size — the rate is what makes it a different part.
Choosing 10.5 N/mm
If the suspension bottoms out or the geometry collapses under load, this is the direction to go. Support under braking improves; small-bump comfort gives a little back. A firm rate keeps the fork high in its stroke under braking, which preserves the geometry when the front 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.
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. Any workshop with the fork or shock in front of it can answer whether this spring fits — the three figures above are all it needs. Öhlins offers rates in defined steps so a change can be made in one direction at a time rather than by guesswork.
Fitting
The fork legs come off, the springs are swapped and the oil level is reset — half a day in most workshops. Torque the fork caps to the manufacturer's figure; the springs change nothing about the assembly torque. Öhlins states an air gap for this application, and that figure is part of the setting rather than a detail.
Road Approval
Road approval: a spring is a like-for-like replacement of a wear part and carries no separate type approval. Where Öhlins states an approval for a particular motorcycle, it is named under Applications.
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: 04799-05
- Spring Rate: 10.5 N/mm
- Free Length: 260 mm
- Inner Diameter: 25.5 mm
- Packaging Unit: Pair
- Country of Origin: Sweden
FitmentWhich bikes this fits▼
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