Adjustable spring rate coil that’s also progressive. Sprindex is specifically designed to have a progressive spring rate for the last 20% of stroke for big hit support and for bikes with a linear linkage design.

• Adjustable spring rate
• Adapters included for different size shocks and set ups
• Made of super high tensile spring steel

Specifications:

• Stroke (ins):2.2
• Material:Steel
• I.D. (mm):38.3
• Spring Weight: 380 – 430