Cages are made of Toray T700 high modulus carbon fiber. Increases the gear-shifting efficiency by reducing the weight pressure applied to the rear derailleur. Top Pully :14T, Lower Pully :18T.
Total Weight: 57g , Including 1 Spacer and 2 washers. Only fit with Shimano Dura Ace 7900,7970,9000&9070; Ultegra 6700,6770,6800&6870.
Won't fit Shimano Dura Ace R9100/9150, Ultegra R8000/8050, 105 (5600,5700,5701,5800) or Tiagra (4600&4700). Fit with up to 36t Cassette Cog, it will be a good choice for 1 11 Roadbike / CycloCross Setup. The item "J&L Ceramic Oversize Derailleur Pulley System(OSPW) for Shimano Dura Ace/Ultegra" is in sale since Thursday, June 15, 2017. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Rear Derailleurs".
The seller is "pingthyy2010" and is located in Shanghai. This item can be shipped worldwide.