The TRD™ is a linear-compression long-travel shock designed for downhill racing. The wide range of compression and rebound damping adjustments gives this shock the tuneable characteristics of a Pro-Circuit upgrade on your Supercross rig.
Hard-anodized, precision cut-and-ground surfaces inside and out ensure a long-lifespan of a top-quality bicycle product.
If you want to take it a couple of steps further, you can actually open up the damper system and change the valving yourself (special directions required).