What is static sag on a dirt bike?

Static, or free sag is the amount the suspension compresses from fully unloaded under the bike’s own weight and is very important on any bike except full suspension MTB where the bike weight is so much less than the rider’s weight, the suspension does not compress under the bikes weight.

What should static sag be on a dirt bike?

3 Static sag is calculated as: sag= L1-(L3+L2)/2. Averaging the two measurements with you sitting on the bike negates any stiction that may be present. Aim for approximately 30mm of static sag for street riding and 25mm for the track. If you have too much sag, tighten up the front preload.

Is static sag important?

Static sag is important. How important? First and foremost, static sag, when set properly, can help you determine if you need a stiffer or softer shock spring. And, it goes without saying that a bike with too much or too little static sag is not going to work up to its potential.

How do you put a static sag on a dirt bike?

To change the sag, use a long punch and a large hammer to loosen the spring locking nut on the shock. 4. Then, turn the spring with your hand to adjust the rear spring preload. Make sure that when you’re turning the spring, the preload nut is also turning.

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What should my rider sag be?

Ideal rider sag can range from 25mm to 40mm or more, depending on the bike and how you intend to use it. A good rule of thumb is to aim for 30mm for street use, and 25mm for track use. 9. The sag amount is adjusted by adding or removing spring preload front and rear.

How do you know if your a SAG rider?

Rider sag is calculated by averaging L2 and L3 and subtracting it from L1 using the following formula: sag = L1-((L2+L3)/2). 5. Rear sag is measured using the same procedure. Measure from the axle to a point vertically above the axle on the bike’s tail.

Is static sag or rider sag more important?

While rider sag is obviously the key measurement, static sag is just as important, especially when setting up a new bike for a particular rider as it will tell you if you have the correct spring rates installed. It can also tell you al lot about the health of your suspension.

How much is a SAG motorcycle?

For road race bikes, rear sag is typically 25 to 30mm. Street riders usually use 30 to 35mm. Bikes set up for the track are compromise when ridden on the street. The firmer settings commonly used on the tract are generally not recommended (or desirable) for road work.

How much free SAG should a dirt bike have?

How much free sag should there be? Free sag should be between 30mm and 40mm. If you have more than 40mm of free sag, your shock spring is too stiff. Less than 30mm and your spring is too soft.

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How is sag measured?

Sag is calculated by averaging L2 and L3 and subtracting it from fully extended. Note: FREE SAG is the amount the bike compresses with the weight of the bike only – no rider.