As mountain bike technology evolves, year after year huge sums are spent on incremental improvements in frame design, suspension and shock technology. Most would agree however, that the most important variable in mountain bike performance is tire pressure. This is your only contact with the trail and thus determines the quality and flow of the ride. Until now riders have been forced to compromise, averaging the best overall tire pressure for the terrain. Unfortunately, one tire pressure for all conditions diminishes the benefits of other technological improvements. ADAPTRAC changes everything! Now riders are able to control this variable and adapt tire pressure to ever-changing traction requirements.