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The G-3 rear hub features a Wider Flanges for a stiffer overall wheel. Smaller overall hub profile includes new field serviceable electronics. ANT+ compatible for use with your favorite computer Axle: 15mm alloy. Battery: Coin cell 2032 QTY (1) 11 speed compatible 325g. Shimano/SRAM or Campagnolo Campatible.
PowerTap G3 rear 32 hole wheel includes: DT Swiss competition spokes, alloy nipples and skewer. Weight 1044 grams Note: You will need a ANT+ compatible device to use this hub