The Magene TEO P515 Power Meter Crank delivers race-grade dual-sided power without the chainrings - perfect for riders who want to choose their own. HI-MOD carbon fibre crank arms drop weight to a featherweight 325 g (170 mm), the 7075 aluminium P515 spider delivers 1% accuracy, and the 29 mm aluminium spindle slots straight into most SRAM DUB-style frames. 330-hour battery life, ANT+ and Bluetooth and BB386/T47 compatibility round out a properly serious lightweight power crank. Key Features Spider plus carbon crank only: ideal for riders bringing their own 110 BCD 4-bolt chainrings, including most Shimano 12-speed HI-MOD carbon fibre crank arms: dual-channel high-pressure forming for ultra-low weight and explosive acceleration Dual-sided spider-based measurement: true left/right watts with 1% accuracy and intelligent temperature compensation 29 mm 7075 aluminium spindle: stiffer, lighter and better-sealed than 24 mm steel - direct SRAM DUB swap for most riders 110 BCD 4-bolt: broad chainring compatibility, Shimano 12-speed friendly 330-hour battery life: rechargeable lithium covers a full season ANT+ and Bluetooth: works with all major head units, watches and training platforms BB386 and T47 compatible: sorted for most modern large-diameter bottom brackets IPX7 waterproof: built to ride through whatever the weather throws at it Specifications Type: dual-sided carbon spider-based power meter chainset Crank arm: HI-MOD carbon fibre, dual-channel high-pressure formed Spider material: 7075 aircraft-grade aluminium Spindle: 29 mm 7075 aluminium (SRAM DUB-style fitment) Chainring BCD: 110 mm, 4-bolt Power accuracy: 1% Battery life: up to 330 hr Wireless protocol: Bluetooth and ANT+ Waterproof rating: IPX7 Bottom bracket compatibility: SRAM DUB-style, BB386, T47 (drive-side BB shell external diameter ?57 mm, total BB shell width with BB installed 90.5-92 mm) Crank weight (170 mm): 325 g Total system weight (170 mm crank): approximately 425 g Brand: Magene Chainrings: not included (110 BCD 4-bolt required)