Tips For Setting Race Sag

Tips For Setting Your Bikes Race Sag

Rider race sag is the most important suspension settings. Not only does it determine spring rates but also has a major impact on the bikes geometry.
It’s best to have a couple friends to help you with this.

1) With your bike on the stand measure from two fixed points. (Usually the rear axle and a fender bolt or seat bolt or even a little mark on the rear fender)  Write this number down. This will be your primary number.  

Example: 600mm

2) Take the bike off the stand, with the rider in full gear, mount the bike in a neutral riding position. Have a buddy steady the bike. (Make sure he doesn’t apply any weight). Now take this measurement.  

Example: 500mm

Subtract this from the first number.  This is the rider’s race sag.     

Example: 600mm
-        500mm
Race sag  = 100 mm

3) Now take a third measurement with the bike under it’s own weight (without the rider) This is known as the free sag: This is the measurement that dictates the need for a stiffer or softer spring.  Take this measurement and subtract it from your first measurement. 
Example: 600mm
 -  575mm
Free Sag:  25mm

Usually this number is between 25 mm and 40 mm depending on the bike.
We ask that you call us with these numbers for verification.

Note: If linkage or swing arm bearings are not in top shape this can and will through the numbers off. So make sure they are in good working order.
This not only affect the out come of sag numbers, But also affect the suspensions performance. You have made an investment in your bike, so you need to make sure all is in proper working order to get the best performance from your suspension.


DGS Racing LLC