The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 08429-60 |
| Spring Rate | 6.0 N/mm |
| Free Length | 270 mm |
| Inner Diameter | 23.5 mm |
| Stroke | 160 mm |
| Construction | Straight |
| Packaging Unit | Pair |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Öhlins part number 08429-60 is a pair of fork springs rated at 6.0 N/mm, 270 mm long with a 23.5 mm inner diameter. Getting the rate right restores the static sag the chassis was designed around.
Key Features
- Supplied as a pair
- Inner diameter 23.5 mm
- Öhlins part number 08429-60
- Measured spring rate 6.0 N/mm
- Free length 270 mm
- Straight-wound, constant rate
- 160 mm of usable stroke
Why the Rate Holds
The Öhlins part number is stamped on the unit, so its specification can be looked up years later. Every Öhlins dealer can re-valve the unit, because the shim stack is a documented, serviceable assembly. Every unit is dyno-tested against the curve held for its part number, not sampled from a batch.
The Numbers That Matter
Dimensionally this is a 23.5 mm × 270 mm spring; within that envelope Öhlins offers a range of rates, and this one is 6.0 N/mm.
What This Rate Does
On a machine ridden solo and mostly on the road, softer is often the honest choice. Lighter riders usually end up a step or two below the factory rate once sag is measured properly. The trade is fork dive under braking — noticeable, but rarely the limiting factor on the road. 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
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. 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.
Installation
Once fitted, ride the machine before making damping changes: the new rate alters what the clicks do. Both legs are done together, and both take the same rate. Oil level is measured from the top of the tube with the fork compressed and the spring removed.
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
Öhlins recommends that its suspension is fitted by an authorised service centre. We are one, and we do the work here: installation, servicing and a proper setup. Ask us and we will include it with the order.
Specifications
- Brand: Öhlins
- Part Number: 08429-60
- Spring Rate: 6.0 N/mm
- Free Length: 270 mm
- Inner Diameter: 23.5 mm
- Stroke: 160 mm
- Construction: Straight
- Packaging Unit: Pair
- Country of Origin: Sweden
FitmentWhich bikes this fits▼
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