Progressive front shock absorbers YSS - Suzuki GSX 600 F / RGV 250 / SV 650 S / Yamaha FZR 400 RR / FZR 400 RRSP - YSS

Progressive fork spring set - YSS for Suzuki GSX 600 F (1991-1997) / Suzuki GSX 600 FU (1991-1997) / Suzuki GSX 600 FU2 (1991-1997) / Suzuki RG 250 C Gamma (1986-1988) / Suzuki RG 250 FC Gamma (1986-1988) / Suzuki RGV 250 (1991-1993) / Suzuki SV 650 S (1999-2002) / Suzuki SV 650 SU (1999-2002) / Yamaha FZR 400 RR (1990-1991) / Yamaha FZR 400 RRSP (1992-1994).

Product Description:

- YSS internal fork spring set is 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 Data:
- Spring model: progressive;
- Length: 330 mm;
- Diameter: 35 mm;
- Spring rate 1: 6.5 N/mm;
- Spring rate 2: 9 N/mm;
- Left air chamber: 160 mm;
- Right air chamber: 160 mm;
- Recommended viscosity: 10W.

The complete application list can be found below.