Marin Air Pressure For Rear Shocks

Posted On: 11 February 2008
Category: Technical

Air Pressure For Rear Shocks in the Marin Quad-link Suspension Range

You need to get the most from your rear suspension in terms of performance and if you follow this guide you will not go far wrong.


Air Pressure

Using a shock air pump with a pressure gauge, initially set the pressure to match the rider's weight in pounds. (Ie for 150lb rider set the pressure to 150 per square inch) Be sure to turn off an Pro Pedal or platform switches while setting up the sag.

To fine tune this setting, slide the O ring up the shaft until it is sitting against the main body of the shock.

Sit on the bike in your normal ride position but do not bounce. The   ring will move away from the shock when you sit on the bike.

Dismount carefully and check the distance between the base of the shock body and the new position of the O ring. This new position we call the sag.

Refer to the chart for the correct distance for your model. If the measurement is less than the recommended distance you must let some air out. If the distance is greater then you must add some air to the shock.

To check the new sag setting, repeat the process.

Since each pump and gauge may vary slightly you may need several attempts to get the correct sag setting. Check the bike manual and shock manufacturer's manual for exact set-ups on remote chambers.


Sag and Distance in Millimetres by model

Quad xc 120 25% 12.5mm 30% 15mm

Quad Trail 140 25% 12.5mm 30% 15mm

Quad XLT 30% 19mm 35% 22mm

Quad Tara 30% 15mm 35% 17mm

NB (25% sag gives a firmer ride feel – 30% sag gives a plusher feel)

To visit the Marin website click here.


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