When you need the absolute best from your training data, the accuracy and reliability of the RED XPLR AXS Power Meter is the way to go. 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

• Thread Mount design is light, stiff and accurate, and fits RED XPLR Thread Mount chainrings 38t-46t (Chainrings sold separately)
• 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 and Waterproof (IPX7 waterproof to 1 meter for 30 minutes)
• AXS enabled for easy monitoring and firmware updates
• Includes 8 bolts and thread back up pin for chainring
• SRAM Model ID: PM-AXS-SPDR-E1
• Chainring BCD/Compatibility: SRAM threaded mount chainrings
• Color: Black