2. Cycling: PowerTap G3C

Ensure that you have the best season ever by monitoring your performance with the PowerTap G3C hub. The precise and accurate PowerTap measures your performance stats to within +/-1.5%. The newest PowerTap is lighter, weighing in at a mere 325 grams, wider, to improve overall wheel stiffness, and is now ATM+ compatible meaning you can stick to your favourite computer.

Price: £975  |  Link: Cycleops.com