Sprindex Light Trail Adjustable Coil Shock Shock Spring (450–540 lbs / 55mm Stroke)

We make things that work better and last longer. Our products solve real problems with clean design and honest materials. The Sprindex Light Trail combines the unmatched small-bump sensitivity, traction, and ride quality of a high-performance coil shock with revolutionary, tool-free spring rate adjustability.

Traditional coil springs lock you into a single fixed rate, forcing you to compromise between climbing efficiency and descending support. Sprindex solves this by altering the number of active coils via an easy-to-twist dial. Adjust your spring rate higher for long, grinding climbs, and dial it back down for plush, high-speed descents—all without changing your preload or swapping springs.

Key Features

• Tool-Free Spring Rate Adjustability: Easily twist the dial to fine-tune your spring rate anywhere between 450 lbs and 540 lbs to match the trail, conditions, or your riding style.


• Progressive Finish: Engineered with a progressive spring rate over the final 20% of the stroke to provide exceptional big-hit support and pair seamlessly with linear suspension linkages.


• Ultra-Lightweight High-Tensile Steel: Utilizes premium, highest-grade spring steel to reduce coil mass while safely handling extreme stress at maximum settings.


• Low-Friction Delrin Performance Adapters: Includes 5 specialized performance adapters that optimize fit across a wide variety of shock bodies while allowing the spring to twist smoothly during high deflection, preventing preload self-adjustment.

Specifications

• Brand / Model: Sprindex Light Trail


• Spring Rate Range: 450 lbs – 540 lbs / in


• Stroke: 55 mm / 2.2 inches


• Spring Length: 126 mm


• Weight: 437g


• Materials: Super High-Tensile Spring Steel (Coil), Glass-Reinforced Polymer (Assembly Dial), Delrin (Performance Adapters)


• Item Fit & Compatibility Tools: Sprindex Finder Fit Tool | Compatibility Guide

Package List

• 1 x Sprindex Light Trail Adjustable Coil Spring (450-540 lbs)


• 1 x Integrated Adjustment Dial


• 5 x Performance Adapters (Delrin)


• 1 x User Manual / Setup Guide