A.R.T. stands for Advanced Ride Technology. Each frame using A.R.T. is refined for its intended purpose. In downhill applications, they increase the rearward axle path for a more controlled ride over gnarly, unpredictable terrain. For cross-country, efficiency and small bump compliance is increased for a faster, smoother ride. An optimization of the proven FSR linkage, A.R.T. delivers excellent pedaling efficiency, square-hit compliance, braking performance, along with a progressive leverage ratio for that wonderful bottomless feel.
This manufacturer's chart helps you evaluate the fit (may show unavailable, and/or not all sizes).