Trek Suspension Calculator
Calculate the optimal suspension settings for your Trek mountain bike based on rider weight and riding style.
Published by:
isCalculator Editorial Team
Was this calculator helpful?
How to use this tool?
How to Use the Trek Suspension Calculator
- Enter Rider Weight (kg): Input your weight in kilograms (range: 30–200 kg).
- Select Riding Style: Choose from Cross-Country, Trail, Enduro, or Downhill. This sets the sag percentage (20–30% of travel).
- Enter Fork Travel (mm): Input your fork’s travel in millimeters (range: 80–200 mm).
- Enter Shock Stroke (mm): Input your rear shock’s stroke in millimeters (range: 30–100 mm).
- Click “Calculate”: The tool validates inputs and displays:
- Fork Sag and Shock Sag (mm) – the recommended compression under your weight.
- Recommended Fork Pressure and Shock Pressure (psi) – starting points for air spring setup.
Note: All inputs are in metric units (kg, mm). Pressures are in psi. Use these as baseline settings; fine-tune based on ride feel.
Previous Results
| Result | Inputs | Date |
|---|
Frequently Asked Questions
Sag is the amount your suspension compresses under your weight. Proper sag ensures optimal traction and control.
With the bike on level ground, measure the distance between a fixed point on the fork/shock and a reference point. Then sit on the bike in riding position and measure again. The difference is sag.
They are starting points. Actual optimal pressure may vary based on fork model, riding conditions, and personal preference.
