Do you love your Rotor cranks but have sways wanted to run power meters?
Designed to run with the rotor axle and crank these 144bcd cranks will lift your training by giving you accurate information.
XPOWER-S is a reliable and stable spider based power meter that is easy to use and install. Based on the excellent structural mechanics and electronic circuit design you can get ±1.5% accurate measurement of watts in every second.
price is for spider only, cranks arms, rotor axle pictured not included in price