Check the listing for details. SRAM RED E1 AXS Power Meter Spider. Color: Black, Condition: New. Listed at 800.00 USD. SRAM RED E1 AXS Power Meter SpiderThe SRAM RED E1 AXS Power Meter Spider uses Quarq’s premier DZero power measurement technology to provide accurate and consistent power readings. It is +/- 1.5% accurate and has active temperature compensation to make sure temperature changes don’t affect your power numbers. This power meter uses integrated chainrings to save weight and improve shifting performance. It also features dual ANT+ and Bluetooth SMART, left and right power balance and a full 2-year warranty. Key Product DetailsCompatibility:This power meter is compatible with SRAM RED AXS 8-bolt DUB and GXP cranksets.Power Measurement:The SRAM power meter measures power at the spider and is therefore able to measure power from both legs.Key Features:Dual-leg power measurement, integrated 1-piece 2x chainrings, accurate to +/- 1.5%, CR2032 user-replaceable battery, left/right power balance, ANT+ and Bluetooth compatibility, auto-zero (automatic calibration).Advice From Our Staff:This is SRAM’s premier 2x road power meter spider. The chainrings are fully integrated into the power meter which improves shifting while also making it lightweight and stiff. This power meter also measures power from both legs and provides left vs. right power balance. While the RED chainrings are made to last 50% longer than SRAM’s 11-speed chainrings, the chainrings cannot be replaced when worn since the rings and power meter are one piece. Most customers can get many years of life out of the power meter before it needs to be replaced and SRAM offers a 50% off replacement when needed. Options For This Power MeterChainrings: The power meter is available in the following chainring sizes:46/33T | 48/35T | 50/37T | 52/39T | 54/41T | 56/43T CompatibilityCranks: This power meter is compatible with SRAM RED AXS 8-bolt DUB and GXP cranksets.Bottom bracket: Compatible with SRAM DUB bottom brackets. In the BoxSRAM Power Meter and ChainringsSet of Torx T20 Bolts SpecsNameSRAM RED AXS Power MeterBike TypeRoadLocation of Power MeasurementSpiderLeft or Both Legs MeasuredBothIndependent Left/Right MeasurementPower BalanceInstallationMore involved (60 min. estimated)Communication ProtocolANT+ and Bluetooth SMARTClaimed Accuracy+/- 1.5%Method of Cadence MeasurementAccelerometerChainline45 mmWarranty2 year Why Buy from Power Meter City 1. We ship fast! All orders ship on the same day your order is placed!2. Free shipping on all orders in the U.S.3. We are an authorized SRAM dealer and this product comes with a full warranty.4. Expert advice and customer service in case you need any help.5. We offer a free, 30-day return policy on new items. About our CompanyAt Power Meter City, we focus on power meters and related accessories and components. Our focus on these products means we can offer you the best possible selection, advice and service.We have been in business since 2016 and are based in southern California. We are an authorized dealer of every product we sell.