power2max NGeco G-X Gravel Power Meter for Shimano GRX Chainrings
SKU code: FES-LM-NEG-ROTDM-002.GRX0
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Keep your Shimano GRX chainrings and add power: the NGeco G-X is designed around GRX rings and comes with the extended 24mm axle it needs.
Highlights
- Designed for Shimano GRX chainrings (110 BCD)
- Extended 24mm axle included; Hollowtech II bottom brackets
- Needs Rotor p2m Edition, ALDHU24 or VEGAST24 crank arms
- ±2% accuracy; L/R balance and pedal smoothness
- ANT+ and Bluetooth
What you need
Because of the GRX crankset design, the G-X is a system: the NGeco G-X power meter and extended 24mm axle are included; ROTOR p2m Edition, Rotor ALDHU24 or Rotor VEGAST24 crank arms and Shimano GRX chainrings are not included.
Simple, reliable data
The NGeco measures total power and cadence at the spider, so there are no pedal or crank-arm sensors to swap between bikes. Active temperature compensation and automatic zero-point adjustment mean no manual calibration, and the CR2450 coin cell is user-replaceable and lasts up to 300 hours.
Compatibility & fit
Designed for Shimano GRX chainrings (110 BCD) and a 24mm axle, compatible with Shimano Hollowtech II bottom brackets. Requires ROTOR p2m Edition, Rotor ALDHU24 or Rotor VEGAST24 crank arms (not included) and Shimano GRX chainrings (not included). Our workshop can fit the power meter to your crankset and pair it with your head unit as a separate service, not included in the price.
Button battery warning: this product contains a button/coin cell battery. A lithium battery can cause severe or fatal injuries in 2 hours or less if it is swallowed or placed inside any part of the body. Keep batteries out of reach of children. If you think a battery may have been swallowed or placed inside any part of the body, seek immediate medical attention.
power2max covers NGeco power meters with a 2-year manufacturer's warranty. For warranty support, return the product to Tune Cycles and we'll manage the claim with power2max's Australian distributor.
- Designed for Shimano GRX chainrings (110 BCD)
- Extended 24mm axle included; Hollowtech II bottom brackets
- Needs Rotor p2m Edition, ALDHU24 or VEGAST24 crank arms
- ±2% accuracy; L/R balance and pedal smoothness
- ANT+ and Bluetooth
| Discipline | Gravel |
|---|---|
| Chainrings | Shimano GRX (110 BCD), not included |
| Axle | Extended 24mm, included |
| Bottom bracket | Shimano Hollowtech II (24mm) |
| Crank arms | ROTOR p2m Edition, ALDHU24 or VEGAST24, not included |
| Measurement | Total power from both legs (spider-based) |
| Accuracy | ±2% |
| Metrics | Power, cadence, left/right balance, pedal smoothness |
| Power range | 10–2999 W |
| Torque range | 0–250 Nm |
| Cadence range | 20–250 rpm |
| Battery | CR2450 coin cell (replaceable) |
| Battery life | Up to 300 hours |
| Connectivity | ANT+, Bluetooth Low Energy |
| Temperature compensation | Active |
| Calibration | Automatic zero-point adjustment |
| Water resistant | Yes |
| Fitment | Loctite 243 or similar threadlocker recommended |
| In the box | Power meter, battery, battery cap, extended 24mm crank axle, quick-start guide |
| SKU | FES-LM-NEG-ROTDM-002.GRX0 |
| Brand | Power2Max |