The Magene PES P515 Power Meter Crank Set is a high-precision spider-based power meter and crank system built to deliver reliable training data, strong power transfer, and long-term durability. With ±1% power accuracy, advanced sensor technology, and intelligent temperature compensation, it provides consistent performance in changing riding conditions. The stiff triple-hollow crank design and lightweight 7075 aluminium spider balance strength and weight, while broad drivetrain compatibility makes it suitable for modern road bike setups.Key Features and Benefits:±1% power accuracy using high-precision strain gauges and acceleration sensors: The spider integrates advanced strain gauges that measure torque directly through the drivetrain while internal acceleration sensors track pedalling cadence with high precision. This combination produces highly reliable power data so your training metrics reflect your real effort with minimal deviation.Intelligent temperature compensation: Built-in algorithms continuously adjust power calculations as ambient temperature changes during a ride. This maintains stable readings from cold early-morning starts to warm afternoon conditions, ensuring your power data remains consistent and trustworthy.Spider-based power measurement system: Positioning the power meter in the spider measures total system torque directly from the crankset rather than estimating from one crank arm. This method captures the full output of both legs and produces accurate total power readings that support precise training analysis.Triple-hollow crank arm structure with CNC machining and deep-hole drilling: The crank arms use an internal hollow channel design combined with precision machining to remove excess material while retaining structural strength. This reduces weight and maintains stiffness so power transfers efficiently from rider to drivetrain.7075 aircraft-grade aluminium spider weighing only 99g: The spider is constructed from high-strength aluminium known for its stiffness and durability under load. The rigid structure prevents flex under heavy pedalling forces, helping maintain accurate strain readings and consistent drivetrain performance.330-hour rechargeable battery life with magnetic charging: A high-capacity battery supports extended training periods, long events, and multi-day rides before needing to recharge. Magnetic charging provides a secure connection and simplifies maintenance between rides.110 BCD four-bolt chainring interface: The crankset uses a widely adopted chainring mounting standard that works with Magene and many third-party chainrings. This allows flexible gearing choices and easy replacement when drivetrain components change.ANT+ and Bluetooth wireless connectivity: Dual wireless protocols allow the power meter to connect with cycling computers, smartphones, and indoor training platforms at the same time. This enables live ride tracking, structured training sessions, and detailed performance analysis.Reliable power measurement plays a central role in structured training and performance analysis. The P515 system collects four key metrics power, cadence, left and right balance, and pedalling smoothness. These data points help identify pedalling inefficiencies, monitor training intensity, and track progress across sessions. Accurate and consistent readings allow structured workouts, pacing control, and detailed performance evaluation over time.Accurate power data, strong crank stiffness, and long battery life make the Magene PES P515 Power Meter Crank Set a dependable upgrade for riders who rely on precise training metrics. It integrates easily with modern road drivetrains and connects to the devices you already use, making it simple to record and analyse every ride.Specifications:Weight:625g (170mm)Spindle: 24mmBolts: 4 boltChainline: 44.25mmQ-Factor: 147mmPower range: 0 - 2500WCadence range: 20 - 240RPMCalibration: Automatic, Backpedal and manualWireless: ANT+ and BluetoothWaterproof grade: IPX7Working temperature: -20 to 50 degreesCharging: MagneticWhat's in the box P515 Spider-based power meterpair of PES crank armsLock ring of conversion kitMagnetic charging cableX6 StickersQuick start guide