Quarq has engineered their crankset to take measurements from the spider, or the middle of the crank itself, to directly respond to rider input. As any and all forces produced by a rider must go through the crankset this gives Quarq an ideal platform to accurately gauge power. The Riken AL is made from aluminum to create an efficient crankset, and reliable power meter, at an accessible price. Designed around a 130 or 110 BCD, this power meter is compatible with most common drivetrain components and their are numerous aftermarket chainring options that allow it to work on a wide variety of bikes. However, at this time it will not fit frames with a BBright bottom bracket configuration. While in use the Riken AL will feed information directly to your Garmin, or other Ant+ powered devices, and features easy installation and startup. Widely available CR2302 batteries are all that are needed to make the unit work. Quarq designs the Riken to meet the IPX7 standard for waterproofness, meaning you can train with confidence in even the worst weather conditions. Also, an integrated AxCad accelerometer will track cadence without need for an additional sensor. Take your training and cycling to the next level with a Quarq Riken AL power meter.