Cannondale SI-SL Powermeter Only

The Cannondale Si Hollowgram crank has the reputation of being extremely light-weight and its stiffness values are among the best you will find on today's market.
It’s the result of an exclusive High End cooperation between Cannondale and SRM. Wireless data transmission via ANT+ protocol.

Measurement accuracy: ±2%.

Cannondale Si Hollowgram crank: Cranks are available in lengths of between 170, 172.5 and 175mm

Chain rings:
Bolt circle diameter 130mm
Standard: 39/53
All other chain ring combinations are available at an extra charge

Weight: 657 g with crank and chain rings (Lightest PowerMeter available)

Compatible with SRM PowerControl IV and V and all SRM cables

Compatible with PowerControl VI wireless, Garmin 705 or via SRM sensor cable with PowerControl IV and V.

Fits on Cannondale Si Hollowgram sealed bearing and original Cannondale Si Hollowgram cranks