The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 04798-75 |
| Spring Rate | 7.5 N/mm |
| Free Length | 370 mm |
| Inner Diameter | 25.5 mm |
| Packaging Unit | Pair |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Öhlins part number 04798-75 is a pair of fork springs rated at 7.5 N/mm, 370 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
- Free length 370 mm
- Öhlins part number 04798-75
- Measured spring rate 7.5 N/mm
- Inner diameter 25.5 mm
How Öhlins Makes Them
Machining, anodising, assembly and testing all happen in the same building rather than across a supply chain. The Öhlins part number is stamped on the unit, so its specification can be looked up years later. Öhlins manufactures in Upplands Väsby, north of Stockholm, and assembles and tests every unit there before it ships.
Size and Rate
Dimensionally this is a 25.5 mm × 370 mm spring; within that envelope Öhlins offers a range of rates, and this one is 7.5 N/mm.
Choosing 7.5 N/mm
Rates in this range suit lighter riders and machines that spend their time on real roads rather than smooth circuits. Lighter riders usually end up a step or two below the factory rate once sag is measured properly. Comfort and grip come from the spring moving early; this is the end of the range where that happens. A road machine spends most of its life in the first third of the fork's travel — that is the part the rate governs.
Applications
Öhlins offers rates in defined steps so a change can be made in one direction at a time rather than by guesswork. Nothing about the installation changes across a rate range: the mounting, the length and the bore stay the same. There is no model list for this size because the spring is a dimensional part: it fits whatever fork it physically fits.
What Fitting Involves
Both legs are done together, and both take the same rate. The job needs no special tools beyond a fork spring compressor and a measuring rod for the oil level. Öhlins part numbers are stamped on the packaging rather than the spring, so keep the label with the setup notes.
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: 04798-75
- Spring Rate: 7.5 N/mm
- Free Length: 370 mm
- Inner Diameter: 25.5 mm
- Packaging Unit: Pair
- Country of Origin: Sweden
FitmentWhich bikes this fits▼
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