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• Products whose serial numbers has been altered, defaced or removed. Warranty procedure The owner should always refer to an approved BOS center for any warranty claim. A proof a purchase is compulsory for any warranty claim. Otherwise the warranty claim will not be considered.
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1. Introduction Thank you for purchasing a BOS KIRK shock. Your shock has been assembled specifically for one bike - yours! - which means that the internal valving and the air chamber volume are adjusted for your bike. The correct mounting kit is also provided with the shock.
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11mm BOS recommends a sag percentage of 30 to 35 %. The bike manufaturer may also indicate a percentage of SAG. Please refer to your bike’s user manual for this value. If the manufacturer recommendation differs from ours, you should test the bike on the trail at different sag values to find the right amount for your riding style.
HYDRAULIC SETTINGS The KIRK shock is a three-ways adjustable shock, which means there are three types of damping adjustment: rebound, low-speed compression and high-speed compression + a lock out lever that affects low speed compression only. Your shock’s base setting (internal) is set up for your bike’s geometry when you purchase the shock. We use five basic settings which cover the majority of bikes on the market.
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ATTENTION BOS has worked hard to develop our compression curve, which allows the KIRK shock to maintain the balance of the bike, as well as giving good response, and improving handling. BOS recommends setting up the bike with a fast rebound to keep the chassis balanced, and avoid the bike sitting low in its travel.
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Procédure Place the head of the shock in a soft-jawed vice (figure 1). Lightly tighten the vice jaws to prevent damaging the shock. WARNING Before tightening the vice, make sure the jaws grip a flat surface and are not touching the rebound knob. Note your shock pressure, taking into account the loss of pressure when connecting your pump.
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Caution : We recommend doing the oil service and full service at a BOS approved center. Only the BOS approved centers are able to identify and appraise a damaged or worn part, especially in case of shock or wear on structural elements such as the...
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Your shock has been set up for your bike, with a specific internal valving and air chamber volume. It is delivered with a pressure of 80 to 100psi. You can find all the information about standard settings for your bike in the chartlist on the BOS website bosmtb.com.
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