Introduction:

Setting the sag on a dirt bike is an essential part of optimizing its performance, as it ensures proper suspension action. Incorrect sag can result in overloading the suspension or losing traction, which can adversely affect your ride. Follow these 14 steps and learn how to set sag on a dirt bike for improved handling and overall riding experience.

1.Park your dirt bike on a flat surface: To accurately measure the sag, find an even area where you can safely work on your motorcycle.

2.Gather necessary tools: You’ll need a measuring tape, permanent marker, and someone to help you with measurements.

3.Put on your riding gear: To measure the sag accurately, wear your typical riding gear, including helmet, boots, and any other protection equipment.

4.Find the unloaded sag measurement point: Look for the rear axle bolt and then locate the point directly above it on the rear fender or bodywork. Mark that point using a permanent marker.

5.Measure the shock’s extended length: Pull up on the rear of the dirt bike and measure the distance (in millimeters) from the center of the rear axle to the marked point when fully extended. Write down this measurement – let’s call it “A.”

6.Calculate target sag range: Generally, for motocross and off-road dirt bikes, it is recommended to have 100-105mm of sag. However, check your owner’s manual or consult with an expert for your specific bike model.

7.Sit on your bike and adopt riding position: Sit in a neutral position without leaning too far forward or backward.

8.Measure static sag: Ask your assistant to hold the bike steady while you remain in a seated position. Measure again from the marked point to the center of the rear axle as described before (measurement “B”).

9.Calculate static sag: Subtract measurement B from measurement A to obtain your static sag value (A – B = Static Sag).

10.Compare static sag to the target range: If the static sag measurement falls within the recommended range, your dirt bike has proper sag. If not, proceed to the next steps.

11.Adjust shock preload: Use preload adjustment rings or a hydraulic preload adjuster on your bike’s rear shock absorber to either compress or decompress the spring, depending on whether you need to increase or decrease the sag amount.

12.Re-measure and re-adjust: Repeat steps 7 through 11 until your static sag is within the recommended range. It may take a few attempts to achieve the desired sag setting.

13.Measure race sag (optional): Get off the dirt bike and push it down several times vigorously before allowing it to return to an unloaded position. Then take another measurement from the marked point to the rear axle (measurement “C”).

14.Compare race sag (optional): Calculate race sag value by subtracting measurement C from A (A – C = Race Sag). This measurement helps determine if your overall suspension setup is balanced. Ideally, your dirt bike’s race sag should also be within the recommended range.

Conclusion:

With these 14 steps, you should now have a proper sag setting that enhances traction and handling for your dirt bike while riding off-road. Remember that riding conditions, personal preferences, and bike models vary – fine-tune your suspension settings to match your individual needs. Now hit the trails and enjoy an improved ride!