Progressive fork spring set - YSS for Ducati SD 900 Darmah (1977-1984).
Product Description:
- YSS internal fork springs are stiffer than the original;
- The YSS progressive wound fork springs are made from high-quality steel;
- This allows for a reduction in wire thickness, making the spring more responsive;
- To improve oil flow in the fork, the springs are fully polished and ground on the top and bottom;
- This also reduces noise in the fork;
- The delivery package includes 2 springs for a complete fork conversion;
Technical Specifications:
- Spring model: progressive;
- Length: 515 mm;
- Diameter: 25 mm;
- Spring rate 1: 5 N/mm;
- Spring rate 2: 10.5 N/mm;
- Left air chamber: 160 mm;
- Right air chamber: 160 mm;
- Recommended viscosity: 10W.
The complete application list can be found below.
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