BOS obsys Quick Start

We thank you and congratulate you for choosing a BOS product, designed and developed by enthusiasts and
handmade with care in France.
Please read carefully the user manual included in your product box, and also available in the download section
on BOS's website. It contains the important safety, maintenance, and warranty information you need in order
to safely install and use your BOS suspension as well as the detailed set-up, tuning, and service information.
The knowledge of your product will make its use more pleasant

Setting the crown heights:

Whatever your bike, be sure to keep a distance between 185mm (7.28 in) and 190mm (7.48 in) between the
top of the cap and the top of lower crown.

Air pressure:

Whatever your weight, the air pressure should be between 135 and 250 psi.
Note: Pressures are given for guidance only. You can adjust it by ± 5psi according to your use and your riding style.
Weight (kg) 55
Weight (lbs) 120
Pression (psi)
149

Balancing air chambers:

It is important to balance the pressure of the air chambers during each pressure adjustment to ensure
optimum performance. To do this, compress and slowly release your fork for the first 10 mm of travel 5 – 10
times.
60 65 70 75
132 143 154 165
160 169 179 187
4, impasse Léonce Couture – F31200 Toulouse
Tel : +33 (0)534 25 33 66 – fax : +33 (0)534 25 33 60 – customerservice@bosmtb.com
80 85 90 95
176 187 198 210
195 202 209 216
The air pressure is adjustied by the
« SPRING » valve.
The preload
independently by the « PRELOAD »
valve in a range from 0 à 500 gr.
– Quickstart
100 105 110
220 231 242
221 226 231
can be set
115 120
254 265
235 238