It’s the best tool to help you reach your best. Our lightest stiffest and most accurate integrated power meter just got lighter with a new carbon crankarm construction. Our power meter is accurate to +/-1.5% and isn’t affected by temperature changes and the direct mount x-sync chainring is aero and incredibly long-lasting. Plus we’re offering more crank arm lengths than ever before to ensure this crank works for you. - power meter is fully integrated into the chainring for lighter weight and greater accuracy - power readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ride - measures right and left leg power balance - ultra-light hollow carbon fiber crankarms are 29 g lighter than previous generation - dub bottom bracket adds durability and simplicity - available in 160 165 167.5 170 172.5 and 175 mm lengths