Progressive tuning springs, suitable for FG tuning offroad shocks and CAD shocks.

All springs have an inner diameter of 17 mm.

Available in several versions:

Suitable for CAD/medium and FG 7203 tuning shocks:
- Evo1, 1.6 x 56 mm, yellow
- Evo2, 1.7 x 56 mm, red
- Evo3, 1.8 x 56 mm, blue

Suitable for CAD/long and FG 7204 tuning shocks:
- Evo11, 1.6 x 100 mm, yellow
- Evo12, 1.7 x 100 mm, red
- Evo13, 1.8 x 100 mm, blue