CeramicSpeed makes Oversized Pulley Wheel Systems (OSPW) for most drivetrains including Shimano, SRAM and Campagnolo. Its pulleys are the fastest systems on the market!
Additional CeramicSpeed Oversized Pulley Wheel Systems Info:
The CeramicSpeed Difference
Due to the extremely low friction of the CeramicSpeed bearings and the unique design of the system, the pully system optimizes the overall efficiency of your drivetrain. The result is that you save watts and ride faster and farther than before.
The company also makes its products in a coated version for even longer lifetime and lower friction. The coating on is a thin metallic layer that is 75% harder than the hardened-steel races. CeramicSpeed coated products give you a lifetime warranty.