Trek Suspension Calculator
Estimate starting fork and rear-shock pressure, target sag, and rebound settings for your Trek mountain bike.
Enter suspension details
Rider setup
Front fork
Rear shock
Result
Enter your weight, travel, and sag targets to estimate a starting suspension setup.
Measure sag in riding gear
Wear everything you normally ride with and stand in a neutral riding position when checking sag.
Adjust in small steps
Change pressure by 2–5 psi or rebound by one click at a time, then repeat the same test section.
Record your final setup
Save pressure, sag, rebound, tire pressure, and trail conditions after you find a balanced setting.
Frequently asked questions
What is suspension sag?
Sag is the amount your suspension compresses under your normal riding weight. It is usually measured as a percentage of total fork travel or shock stroke.
Should front and rear sag be the same?
Not always. Fork sag is often lower than rear-shock sag because the front and rear suspension perform different jobs.
What does rebound control?
Rebound controls how quickly the suspension extends after compression. Too fast can feel bouncy; too slow can make the suspension pack down.
Are these official Trek settings?
No. The results are general starting estimates. Always check the suspension manufacturer chart, Trek documentation, and pressure limits for your exact bike.
Results are estimates generated locally in your browser for informational purposes only. This calculator does not create an official rating, score or certification. Official figures require validated data administered by the relevant sporting body. VisionVix accepts no liability for decisions based on this tool's output.
