The RC4WD 90mm Ultimate Scale Shock Internal Spring Assortment includes a selection of internal springs for 90mm Ultimate Scale shocks. This will allow you to tune the shock to suit your application.

Specifications:

• Surface Treatment: Black
• OD: 0.22in/5.6mm
• ID: 0.18in/4.46mm
• Length: 1.57in/40mm
• Weight: 0.42oz/12g

Includes:

• (4) 90mm Shock Spring (1.2 Spring Rate "Green")
• (4) 90mm Shock Spring (1.6 Spring Rate "Red")
• (4) 90mm Shock Spring (0.8 Spring Rate "White")
• (4) 90mm Shock Spring (2.0 Spring Rate "Black")