Progressive front fork springs YSS - Ducati 851 851 S / 851 851 Strada / 888 888 SP5 Sport Production - YSS

Progressive fork spring set - YSS for Ducati 851 851 S (1988-1990) / Ducati 851 851 Strada (1991-1992) / Ducati 888 888 SP5 Sport Production (1993) / Ducati 888 888 SP4 Sport Production (1992) / Kawasaki GPX 750 R (1987-1988).

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: 522 mm;
- Diameter: 31 mm;
- Spring rate 1: 5.8 N/mm;
- Spring rate 2: 7.9 N/mm;
- Right air chamber: 125 mm.

The complete application list can be found below.