SAG Calculator
Measure suspension sag accurately for motorcycles, mountain bikes, dirt bikes, and racing setups. This tool helps riders optimize comfort, handling, traction, and suspension performance with instant calculations.
Results
Sag Amount:
Sag Percentage:
Suspension Status:
What Is SAG?
SAG refers to the amount your suspension compresses under the rider’s weight or the vehicle’s own weight. Proper sag setup is critical for maintaining balance, traction, handling, and comfort during riding.
Whether you ride motocross, mountain bikes, street motorcycles, or adventure bikes, adjusting sag correctly improves suspension responsiveness and cornering stability.
How to Measure SAG
Step 1: Measure Fully Extended Length
Lift the wheel so the suspension extends completely and record the measurement.
Step 2: Measure Loaded Length
Sit on the bike with normal riding gear and measure again with suspension compressed.
Step 3: Enter Total Suspension Travel
Input the total suspension travel distance provided by the manufacturer.
Step 4: View Results
The tool instantly calculates suspension sag and sag percentage.
SAG Formula
The formula used is:
SAG = Extended Length − Loaded Length
Sag percentage is calculated using:
Sag % = (Sag ÷ Total Travel) × 100
Recommended Suspension SAG Settings
| Vehicle Type | Recommended SAG |
|---|---|
| Mountain Bike | 20% – 30% |
| Motocross Bike | 95mm – 105mm |
| Street Motorcycle | 25% – 35% |
| Adventure Bike | 30% – 35% |
| ATV / Off-Road | 25% – 30% |
Benefits of Proper SAG Adjustment
- Improves handling and cornering stability
- Enhances rider comfort
- Increases tire traction
- Prevents excessive suspension bottoming
- Optimizes suspension response
- Improves braking control
Common SAG Setup Mistakes
Many riders use incorrect rider posture while measuring sag, which creates inaccurate results. Another common mistake is forgetting to wear full riding gear during setup.
Using incorrect preload settings can also reduce suspension performance and affect handling stability.
Frequently Asked Questions
What is ideal SAG for motorcycles?
Most motorcycles perform best with 25% to 35% suspension sag depending on riding style and terrain.
Does SAG affect handling?
Yes, incorrect sag can make the bike unstable, reduce traction, and negatively impact cornering performance.
Can beginners adjust SAG?
Yes, basic sag adjustment is simple and can greatly improve ride quality and suspension balance.
Why is rider SAG important?
Rider sag ensures the suspension operates correctly under actual riding conditions and weight distribution.
