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Quarq PowerTap G3 Power Meter 28 Hole Rear Hub (Shimano/SRAM)

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The World’s Most Popular Power Meter In 2005 Quarq PowerTap introduced the world’s first-ever wireless powermeter – and they have been improving upon it incrementally ever since. Now enters the G3, the third generation of hub-based power meters. The G3’s design enables a simple, straight-forward way to measure power. By mounting the strain gauges in an area where external forces, such as spoken tension, cannot impact power measurement, the Quarq PowerTap G3 is able to deliver +/- 1.5% accuracy ride after ride. Incorporating more than just a powermeter, the G3 delivers speed, cadence and power with pin-point accuracy all in one product. With the ability to be switched quickly between bikes, you’ll never miss a watt.
• Hub weighs a mere 325 grams • Wider flanges for a stiffer overall wheel • Smaller overall hub profile • New field-serviceable electronics • Powermeter accuracy of +/- 1.5% • Axle: 15 mm alloy • Hole Count: 28 • Compatibility: Shimano/SRAM (optional freehub body is needed to be compatible with Campy - not included) • Colour: Black • 11 Speed compatible • Battery: Coin cell CR2032 QTY 1 • Head Unit: Compatible with ANT+ and Bluetooth Smart devices • Hub center to flange 38.0mm (non-drive) 17.4mm (drive) • Flange diameter 57.0mm (non-drive) 57.0mm (drive) • Spoke hole diameter 2.5mm (non-drive) 2.5mm (drive) • Note that hubs must be laced with minimum 2x pattern