These are some info on types of brakes.. The OEM Gen2 Rotor can be modified to cross-drilled rotors.. if im not mistaken, its around RM35/piece.. Blank Blank brake discs have no dimpling, slotting, or drilling. They are just a clean, smooth face. The advantages to blank brake discs are that they have the most surface area, are very easy on pads, are the cheapest, and resist cracking very well. The disadvantage is that they don't have areas to expel gases. However, that disadvantage is pretty much a moot point considering most modern pads don't build up gases enough to create a skating effect. However, most of the time blank rotors are not available with directional vanes, which is sometimes a very big buying point. Drilled Drilled brake discs are essentially blank brake discs which have had holes drilled or cast into them. The cast holes will resist cracking more than simply drilling holes, but if the drilled holes are chamfered correctly no problems should be had. Also, buying...