---
title: How do I measure collapsed and extended length?
description: Get accurate collapsed and extended lengths to ensure proper fitment and performance.
---
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# How do I measure collapsed and extended length?
## Get accurate collapsed and extended lengths to ensure proper fitment and performance.
### **1. Static Measurement**
With the vehicle on level ground, measure from the **top mounting point to the bottom mounting point** of the shock. This is your **static height** — and it will help calculate compressed travel.
### **2. Collapsed Length**
Measure the distance from the **bump stop** to its contact point (e.g., control arm or solid axle).
Then subtract that number from the static height:
**Example:**
- Static Measurement = 10"
- Bump stop to control arm = 4"
- **Collapsed Length = 10" – 4" = 6"**
### **3. Extended Length**
Lift the vehicle by the **frame or body** — not the suspension — using a jack. Raise it until the tire just barely lifts off the ground.
Now measure from the top to bottom mounting points again — this is your **extended length**.
📽 **Need a visual?**
Here’s a helpful video that walks through the process:
[Watch on YouTube](https://www.youtube.com/watch?v=l8rD3Of0ZR4)
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