What is sag on a dirt bike?

Sag happens when the rear shock of your motorcycle is compressed, lowering the rear end of the bike. … Race sag is measured when the rider is sitting with all of his weight on the bike, while free sag is measured when the bike is stationary on the ground without any weight on it.

What should your sag be on a dirt bike?

The correct amount is approximately 33% of the bikes total available travel, usually between 95-115mm on full size bikes. The correct amount varies because of bike geometry, rider preference, and type of riding. The rider sag should be set with the rider in full gear.

Why is setting sag important?

sag sets your absolute vertical position along the travel stroke of the suspension. if your sag is set so that just sitting on the bike you are already bottoming out the suspension, then if you hit the slightest bump you will run out of suspension travel and the bump will not be absorbed.

How much sag is too much?

Set the Sag

Most manufacturers recommend that you set your sag somewhere between 25 to 35 percent. If your sag is higher or lower than that, you need to make some adjustments by attaching your shock pump and increasing or decreasing the air pressure in the shock and running the calculation again.

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How important is setting sag on dirt bike?

The sag on your motorcycle plays a key role in the balance and stability of your bike. When testing different sag heights for your weight, riding style and riding conditions, the ideal setting for you will feel stable while going down fast straightaways and also comfortable and easy to turn when coming into corners.

How much sag is trail riding?

The amount of recommended sag will vary depending on the type of bike that you ride. Typically, enduro/trail bikes fall between 25% – 35% recommended sag, while downhill bikes can be up to 40% recommended sag.

Is static sag 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. … You need to adjust the bike with the rider mounted first to be able to tell if the spring is right.

What should static sag be?

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. Too little, and you’ll have to loosen the adjusters accordingly. One turn on the adjuster will usually change sag by about one millimeter.

How much sag should you run?

Traditionally, it was often said that you should run about 25% sag for cross-country and about 30% for everything else. But modern bikes generally have more progressive linkages and radically better air shocks with volume spacers to control bottom-out.

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How is sag measured?

Sag is measured directly with no subtracting required. The Sag Master has a pin on the back. The pin goes into the hollow axle and the tape is extended vertically and locked in to a reference mark on the chassis. This is why you see the tape starting from the axle instead ot the other way around.

What is small bump sensitivity?

Small bump means trail chatter. Like pebbles and washboard stuff. Basically suspension performance right at sag.

How is SAG calculated on a mountain bike?

% Sag = (Stroke Used) / (Total Stroke Length) * (100 %)

  1. The Stroke Used is the amount of suspension stroke used while you are on your bike in a static riding position.
  2. The Total Stroke Length is the length of the shock shaft that is available to be compressed.

How much is a SAG rear shock motorcycle?

For road race bikes, rear sag is typically 25 to 30mm. Street riders usually use 30 to 35mm.