Regardless of your level or experience on the bike, there's no better way to optimize your training and performance than with a power meter. Luckily, Specialized has combined the incredibly light and stiff S-Works Carbon crank with a dual power meter to create the lightest (440 g / 172.5 mm) and most accurate power meter.

S-Works Carbon Power Crank - Dual Sided Powermeter Features:

• +/- 1.5% real-world accuracy, tested on the WinMill and validated by Locomotion Lab in Boulder, CO.
• Independent, dual power measurement
• Works with ANT+ and Bluetooth® devices
• Easy setup and diagnostics with the Specialized Power App. (iOS and Android versions available)
• Hollow carbon crank arms, carbon spider and oversized aluminum spindles provide superior stiffness and lighter weight than the competition - 440 g for 172.5 mm crank arm length.
• Fits Specialized road bike frames with OSBB or PF30 bottom bracket shells, as well as most BB30 road bike frames.
• 110 BCD carbon spider (also compatible with 130 BCD carbon spider - sold separately).
• Left / right power measurement with temp. control
• +/- 1.5% real world accuracy
• Compatible with ANT + & Bluetooth® devices

The double-sided S-Works Power Cranks use separate strain gauge systems to measure the power generated by each leg individually. This maximizes the accuracy of the measurement numbers and helps you better understand your performance as fatigue increases and when you need to recover from an injury. And with industry-leading temperature compensation firmware and waterproof housings, Power Cranks are easy to use. Calibration is only required for seasonal temperature fluctuations, and the included wrench makes battery changes a breeze.

Compatible with Shimano and SRAM drivetrains.

Chainring bolts are included.

Chainrings are available separately.

Use only with Specialized / Praxis chainrings 06217-1702 (52/36T) and 06218-1713 (50/34T).

Material:

Crank arms / spider: FACT Carbon
Crankshaft: Aluminum