How to set sag on an enduro bike
How to set sag on an enduro bike: Sag is the amount the suspension compresses under the rider and is the foundation of suspension setup. Proper sag balances traction, chassis geometry and available travel so the bike remains composed on climbs, in corners and through rough technical sections. You set sag when the bike is ridden with your normal kit and load—before a race, after changing tires or suspension settings, or any time you change weight or riding style. Learning to measure and adjust sag gives predictable handling, helps avoid bottoming or harshness, and makes other suspension adjustments more meaningful. This guide covers body position, how to measure, how to change preload, and basic follow-up checks.
Step by Step
1. Wear your riding kit
Put on the clothes, helmet and any hydration or tools you normally carry so the measured sag reflects your real riding weight.
2. Set the bike upright
Balance the bike on level ground with the front wheel straight and ensure the suspension is settled by compressing it a few times before measuring.
3. Assume neutral riding position
Sit on the bike in normal riding posture with feet on the pegs and hands on the bars, keeping weight centered and looking forward; remain relaxed but steady for the measurement.
4. Measure and calculate sag
Use a shock or fork indicator, or measure wheel-to-fender distances: note the fully extended length and the loaded length, then calculate sag as the difference expressed in millimeters or percent of travel.
5. Adjust preload and recheck
Alter spring preload (or air pressure) incrementally and repeat the measurement until sag falls within your target range, then re-seat the suspension and verify with a short ride.
Common Mistakes & Fixes
- Measuring without your normal gear — Always weigh the bike with the kit and hydration you normally carry.
- Measuring off the bike — Sit on the bike in a neutral, balanced position to get real-world sag.
- Making large, quick adjustments — Change preload or pressure in small steps and re-measure after each change.
- Ignoring front–rear balance — Set front and rear sag relative to each other and consider crash or cornering feel.
Pro Tip
If uncertain, aim for sag expressed as a consistent percentage of travel rather than an absolute millimeter value so settings scale with different travel lengths.