the EBC is an aftermarket replacement pad that comes in 3 grades. the green is for a close to original pads. the red is Kevlar and has much better grip and heat resistence but will not last as long as the green.the gold is a longer lasting good gripping and great for nasty conditions pad. if you ride dry stuff green is fine. if you ride downhill red is the one. if you ride nasty conditions or have not been happy with the longevity of your stock pads then go with the gold. many companies make pads and these are the only ones Im familiar with other than C4s(stock pads).