Magene PES P515 Power Meter

±1% Spider-Based Precision. Direct Shimano Replacement.

The engineering core of the Magene PES P515 Power Meter Crankset is its high-precision spider-based measurement matrix. By housing strain gauges and temperature compensation sensors directly within the 110BCD 4bolt spider, the P515 captures total power output from both legs with an outstanding ±1% accuracy rating. The crank arms utilize a CNC-milled triple hollow channel construction, stripping away unnecessary material while preserving high structural stiffness for explosive sprints and high-torque climbing efforts.

Why the Magene PES P515 is a Game-Changer:

• Comprehensive 4-Metric Data Tracking: Measures real-time Power (up to 2500W), Cadence, Left/Right Balance, and Pedal Smoothness, helping you identify biomechanical imbalances and refine your pedal stroke efficiency.

• Direct Shimano Replacement (24mm Spindle): Features a standard 24mm steel spindle that drops right into existing Shimano Hollowtech II bottom brackets—no need to swap bearings or buy specialized BB tools.

• Universal 110BCD 4Bolt Interface: Compatible with standard 110BCD 4-bolt road chainrings (including 11Speed and 12Speed Shimano 105, Ultegra, and Dura-Ace chainrings), allowing you to retain your favorite gear ratios.

• Extended Battery Life & Magnetic Charging: Delivers up to 330 to 380 hours of ride time on a single charge via a weather-sealed magnetic charging port, ensuring your power meter easily lasts through months of heavy training.

• Dual-Protocol Wireless Connectivity: Transmits seamlessly over both ANT+ and Bluetooth, pairing instantly with Garmin, Wahoo, Bryton, or Magene head units, as well as indoor apps like Zwift, TrainerRoad, and Strava.

• Active Temperature Compensation & IPX7 Waterproofing: Built-in thermal sensors adjust automatically to shifting ambient temperatures, while an IPX7 waterproof casing keeps electronic internals dry in heavy downpours.

Technical Specifications:

• Power Accuracy: ±1.0%

• Measurement Location: Spider-Based (Dual-Sided Total Power & L/R Balance)

• Spindle Standard: 24mm Steel (Shimano Compatible)

• Spider Interface: 110BCD 4-Bolt Pattern

• Crank Arm Material: CNC-Machined 7075-T6 & Alloy (Triple-Hollow Structure)

• Weight: ~625g (170mm arms + spindle + spider, excluding chainrings)

• Q-Factor: 147mm

• Waterproof Rating: IPX7

The Alegro Perspective: In the workshop, the PES P515 is our absolute top recommendation for riders taking their first serious plunge into power-based training. Dual-sided power meters used to cost as much as a new wheelset, but Magene completely flipped the script here. The 24mm spindle makes it a dead-simple, immediate upgrade for anyone running a Shimano groupset. You literally unbolt your 105 or Ultegra crankset, move your existing chainrings onto the P515 spider, and slide it straight into your current bottom bracket.

Precision Spider Data. Plug-and-Play Simplicity. Fuel Your Training with Magene.