SRAM, AXS E1 Powermeter Spider, Power Meter Crankset, Speed: 12/13, BCD: Direct Mount SRAM 8 Bolt, Black, Road

• The spider design uses a proprietary thread-on chainring mount system which allows us to reduce weight and increase stiffness without compromising the ability to swap rings. • A dual sided power measurement system, it’s accurate to +/-1.5% even as weather conditions change, and boasts unbeatable battery life. •User replaceable CR2032 battery with 200-hour battery life • Bluetooth low energy technology and ANT+ wireless data transfer • MagicZero automatically checks and recalibrates your power meter as you ride • No cadence magnet required • 10K Temperature Compensation • AXS™ enabled for easy monitoring and firmware updates • SRAM Model ID: PM-AXS-SPDR-E1