Subrosa Barcelona sprocket/guard combos and Hero sprockets offer different options for different types of riding. If you’re a street rider constantly bashing or grinding your rig, the Barcelona sprocket will keep your drive train safe. If you’re looking to reduce weight and grinding your chainwheel isn’t a worry the Hero sprocket will do the trick and look great doing it. Click HERE to view our current sprockets. The Barcelona sprocket/guard is Subrosa pro Simone Barraco’s signature sprocket that’s strong enough to handle his creative, and constant abuse when riding through his beloved city of Barcelona. Making the 1 pc Barcelona sprocket guard 8mm thick allows for the sprocket to take hit after hit without bending or deforming. Specs: 7075-T6 8mm thick alloy keep it light and strong. The Subrosa Hero sprocket is lightweight and simple. 6mm thick 7075-T6 alloy. Available in 25t, 28t, and 32t sizes.