Review: Specialized Purgatory Grid MTB Band - Gearlimits Please Use Our Service If Youâre: Wishing for a unique insight into a subject matter for your subsequent individual research; Specialized dropped some big updates to stalwarts of its cross-country tire range: Renegade, Fast Trak, and Ground Control. Like a lot of people, I tend to be into the tires I currently am riding. Specialized control vs grid casing - Singletrack World Magazine Con diferentes compuestos y compuestos innovadores para que puedas elegir la cubierta Specialized 29 que mejor se adapte a tus necesidades. Specialized Ground Control Sport. Specialized Purgatory Control 26 x 2.1", psi 25-50, approximate weight 530g. ALL MOUNTAIN: Butcher, Slaughter. Casing: 420/D1 for … they are heavy but once you get crashing down a trail, they rock! Testbericht: Specialized Butcher Control 2,3"/Purgatory Control 2,3"