SRAM DUB PressFit Ceramic Bottom Bracket PressFit 86.5mm Road Black MFPN=03 000094 }Wolf Tooth Single Speed Stainless }Wolf Tooth Single Speed Stainless Steel Cog: 16T Compatiblewith 3 32" Chains Yes Material Aluminum Plastic Fender Width 45 Maximum Tire Width 37 What’s more the DUB ceramic bottom bracket can help riders save precious rotational energy without sacrificing the kind of robust seals required for real MTB and road racing scenariosHigh efficiency ceramic bearings save riders rotational energy While DUB has been simplifying the game eliminating compatibility frustration and confusion for years the DUB ceramic bottom bracket gives riders an additional option for even more silky smooth performance