Asphalt & Gas makes the best leather knee pucks in the world. Leather knee pucks have been used by some of the fastest racers in the world to get a better feel for the track than plastic pucks. Leather pucks have a comfortable feel that doesn't bounce, vibrate, make scraping noise or slip uncontrollably. They don't have as much drag as some might think and they last well, too. A&G leather knee pucks have been used at all levels: GP, WSB, AMA, club level, novice, even street riders.
These leather pucks offer a superior feel, and has a better rate of wear. Individually hand made by Jeff Lee, a rider who spent years developing this better functioning slider. Requires a hook & loop mount (velcro).