Elevate your cycling performance with the SRAM Rival AXS Wide Power Meter Left Crank Arm and Spindle Upgrade Kit. This innovative power meter integrates seamlessly within the DUB spindle, offering a sleek design that fits a wide range of bike setups. Experience the advantages of advanced technology that adds minimal weight while enhancing your training and racing capabilities. This upgrade is perfect for any eTap AXS bike, allowing you to measure power output effectively.Wide chainline design accommodates larger gravel tiresDUB-PWR spindle-based unit measures left side power to calculate total wattsElegant integrated design for a clean aestheticProven Quarq reliability and accuracy ensures dependable performanceLong-lasting battery life (over 400 hours) powers your rides throughout the seasonUser-replaceable lithium AAA battery for convenienceDUB bottom bracket (sold separately) enhances durability and ease of installationIPX7 waterproof rating allows for protection up to 1 meter for 30 minutesLightweight construction, adding less than 40g compared to standard cranksetsAffordable and straightforward option for upgrading to a power meter