Alpha #5238T Piranha Race Tires 3/32" Axle Bore Treated Natural Rubber 13/16" Dia (0.8125) Big Full Hub (0.475 dia), Alpha has a proprietary process of chemically treating the rubber to alter it's characteristics. The treated Piranha rubber is a bit firmer, and has a bit less grip. But it also is longer wearing and because it has less rolling resistance, is faster on the straight-aways and in the bankings. Try it if the regular Piranhas seem a bit too soft and grippy. These tires are for those of you like the "euro" style hubs.
|Diameter||.812 (20.5mm / 13/16in.)|
|Hub Dia.||.500 (12.8mm / 1/2in.)|
|Unit of Measure||PAIR|