StagesShimano Cannondale Si Hollowgram Single Sided Power Meter - 165mm

Stages Power for BB30 riders looking to add power to their existing Cannondale Si HG crank. The Stages Power meter is pre-assembled on a Si HG left crankarm and also retrofits to SiSL2 cranks. The Stages Power Cannondale Si HG is the power meter option for all Cannondale BB30 riders who are on a Cannondale Si HG crankset. The Stages Power Cannondale Si HG will also fit SISL2 and Si cranksets. The Stages Power is pre-assembled on a Cannondale Si HG left crankarm. It replaces the existing left crankarm which makes installation pretty simple. Due to the left crankarm interface there is no interference with the drivetrain components. Via ANT+ and Bluetooth Smart technologies the Stages Power is compatible with all ANT+ cycling computers as well as with the latest smartphone models. The new Stages Power meter is slimmer, and up to 28-percent lower profile than our original meter. It's sleeker by way of a 17-percent reduction in frontal area, and we've also made it stronger. The new housing design increases the strength of the battery door and housing connection by 200-percent over the previous design. Features: Tool free battery replacement Active temperature compensation Accelerometer based cadence measurement Wireless firmware upgrades Specifications: Accuracy: ± 2% Power meter housing: New low profile with new door interface Weight: Only adds 20gr to base crank arm Battery life: 200+ hours (coin cell: CR2032) Power range (Watts): 0 - 2500 Cadence range (rpm): 20 - 220 Water resistance rating: IPX7 Frame compatibility: Most frames, see fit guide in our Support section Crank Compatibility: Cannondale Hollowgram SI and Hollowgram SiSL2 cranks Device compatibility: ANT+, Bluetooth Smart Ready Software compatibility: Training Peaks, Strava, Garmin Training Center and others