The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 00281-77 |
| Spring Rate | 16 N/mm |
| Free Length | 280 mm |
| Inner Diameter | 46 mm |
| Stroke | 175 mm |
| Construction | Straight |
| Finish | Powder-coated yellow |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Öhlins part number 00281-77 is a shock absorber spring rated at 16 N/mm, 280 mm long with a 46 mm inner diameter. The damper can only control the spring it is given; the wrong rate makes every click a compromise.
Key Features
- 175 mm of usable stroke
- Öhlins part number 00281-77
- Straight-wound, constant rate
- Free length 280 mm
- Measured spring rate 16 N/mm
- Powder-coated yellow
- Inner diameter 46 mm
Manufacture and Tolerance
Machining, anodising, assembly and testing all happen in the same building rather than across a supply chain. Every unit is dyno-tested against the curve held for its part number, not sampled from a batch. Shafts are hardened and surface-treated so the seal has a consistent surface to run against.
The Numbers That Matter
The 46 mm bore and 280 mm length are the two figures that decide whether it physically fits; 16 N/mm decides whether it suits the rider.
Where This Rate Belongs
Rates in this range suit lighter riders and machines that spend their time on real roads rather than smooth circuits. This is the end of the range where small-bump compliance matters more than resistance to diving. On a machine ridden solo and mostly on the road, softer is often the honest choice. 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
Progressive springs change rate through the stroke, which suits machines with little travel and a lot of load. Preload adjusts sag within a rate; it does not change the rate, and no amount of it will rescue a spring that is wrong. 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.
Applications
Rather than a model list, use the measurements: a fork that accepts this diameter and length is a candidate, and the rate follows from rider weight. Where Öhlins lists this size against a particular unit, the listing is a starting point rather than a boundary. 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
Fork oil should be replaced at the same time — it is already out of the leg. Preload spacers usually need shortening or lengthening so the installed length stays correct. Öhlins states the oil and the air-gap for this application — both are part of the setting, not 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
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: 00281-77
- Spring Rate: 16 N/mm
- Free Length: 280 mm
- Inner Diameter: 46 mm
- Stroke: 175 mm
- Construction: Straight
- Finish: Powder-coated yellow
- Country of Origin: Sweden
FitmentWhich bikes this fits▼
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