Progressive front fork springs YSS - BMW R 80 GS Paralever ('87-'90) - YSS

Progressive fork spring set - YSS for BMW R 80 GS Paralever (1987-1990).

Product description:

- YSS internal fork springs are firmer 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: 450 mm;
- Diameter: 33 mm;
- Spring rate 1: 4.9 N/mm;
- Spring rate 2: 7 N/mm;
- Left air chamber: 160 mm;
- Right air chamber: 160 mm;
- Recommended viscosity: 15W.

The complete application list can be found below.