S1 Power Meter Spider

NEXGA S1

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THE NEXT-GENERATION POWER METER SPIDER NEXGA S1

Pro-level accuracy. Breakthrough lightweight design.

From laboratory calibration to real roads, S1 delivers accurate, consistent and traceable data for every pedal stroke.

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S1 HIGHLIGHTS

Professional measurement, built into every ride.

From sensing and computation to calibration, connectivity and protection, S1 puts professional power measurement in a lightweight body.

10 s AVG

1% power accuracy

See how each effort translates into watts through measured power data.

Session average power03:07–58:59

NEXGA S1

156.5 W

Favero Assioma Pro RS

155.4 W

Recording time (mm:ss)10-second means · final interval 3 s

Hover or tap the chart to compare average power for each interval.

16-Bit ADC

High-resolution, high-precision 16-bit analog-to-digital conversion

180-hour battery

Long-lasting power for repeated training and distance rides

Dual connectivity

ANT+ and Bluetooth 5.0 support for leading devices

USB-C charging

Fast charging through a convenient universal port

Ultra-thin, only 95 g*

Compact construction with less added weight

IPX7 water resistance

Built for rain, mud and wet riding conditions

Dynamic torque calibration

Consistent accuracy across the full power range

High-precision six-axis gyroscope

Same cadence · rough-road comparison

Millisecond response keeps cadence measurement accurate even over rough roads.

Gyroscope

Stable output

Accelerometer

More noise on bumps

Time

0s2s4s6s8s10s12s

Smooth sectionRough section

LABORATORY-GRADE ACCURACY

±1% accuracy.
Trust every watt.

±1%

Power accuracy

16Bit

High-resolution ADC

Advanced strain gauges combine with automatic temperature compensation and intelligent zeroing to capture every power change, even through temperature swings and demanding road conditions.

Automatic temperature compensationIntelligent auto-zeroLeft/right power balance

NEXGA S1 ±1% power accuracy construction

DYNAMIC TORQUE CALIBRATION

Every unit verified.
Accuracy documented.

FULL RANGE

Low · medium · high verification

EVERY UNIT

Factory dynamic calibration

Every S1 is compared in real time with a high-precision torque sensor across the complete power range and ships with its own calibration report.

Individual calibration reportMeasurement consistency verifiedTraceable calibration data

NEXGA S1 dynamic torque calibration equipment

Real-time high-precision torque sensor comparison

USB-C FAST CHARGING & LONG BATTERY LIFE

Charge quickly.
Ride farther.

180hours

Maximum battery life

15min

Adds up to 50 hours of riding

The universal USB-C port works with leading chargers and power banks. A full charge takes about two hours, preparing S1 for long-distance rides.

* Actual battery life and charging time vary with environment, equipment and usage.

ANT+ & BLUETOOTH DUAL CONNECTIVITY

Multiple devices.
Real-time sync.

ANT+

Bike computers and trainers

BLE5.0

Phones and training apps

Compatible with leading Garmin, Wahoo and Sigma bike computers and training apps, with real-time multi-device sync for seamless power and cadence data.

IPX7 protection, ready for the elements

Withstands immersion in one meter of water for 30 minutes. Precision sealing protects internal components so you can stay focused through heavy rain and mud.

COMPACT DIMENSIONS & FRAME COMPATIBILITY

Broad compatibility.
Built for modern frames.

≤61mm

Drive-side outer diameter

90.5–92mm

Installed total width

Compact bottom-bracket clearance fits most modern frames, while precise installation dimensions simplify setup.

T47BB386Large-diameter BB

TECHNICAL SPECIFICATIONS

NEXGA S1 specifications

Measurement

Power accuracy: ± 1.0 %
Power range: 0 - 2200 W
Cadence range: 30 - 220 rpm
Data metrics: Power, cadence, left/right balance, pedal smoothness

Power

Battery capacity: 180 mAh
Battery life: Up to 180 hours
Rated charging input: 5V / 0.2A
Charging port: USB Type-C

Physical

Weight: ≤ 95 g
Water resistance: IPX7
Operating temperature: -10°C – 50°C
Wireless: ANT+ / Bluetooth 5.0

The listed data is based on testing in standard laboratory conditions. Actual performance may vary with device settings, riding conditions and usage.

IN THE BOX

Everything you need to get started.

Purchase details

NEXGA S1

Power meter spider, dynamically torque-calibrated before leaving the factory.

QTY × 1

3 m USB-C charging cable

Extra length makes charging easier after installation.

QTY × 1

Quick-start guides

Get started with installation, connection and first use.

QTY × 1

User manual

Complete setup, connection and operating instructions.

QTY × 1

Calibration report

Individual dynamic torque calibration data for your unit.

QTY × 1

Purchase details

MODEL COMPARISON

Find your S1

Start with your riding discipline. Compare BCD, offset and weight to find the right fit for your crankset.

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Road

4 models

S1 Power Meter Spider

EASTON 110BCD-4S

Chainring / BCD: 110 mm × 4 · 35°
Offset: 7.2 mm
Weight: 95 g

Compatible cranksets

EASTON EC90 / ELILEE XXE / CYBREI GP3 / INCOLOR SKYPIVOT / CENIT

Details

S1 Power Meter Spider

SRAM 8-BOLT 110BCD-4S

Chainring / BCD: 110 mm × 4 · 35°
Offset: 8.1 mm
Weight: 97 g

Compatible cranksets

SRAM FORCE, RED / QUARQ / Cane Creek eeWings / CRODER SPIRIT / 5DEV

Details

S1 Power Meter Spider

SRAM 3-BOLT 110BCD-4S

Chainring / BCD: 110 mm × 4 · 35°
Offset: 8.1 mm
Weight: 96 g

Compatible cranksets

SRAM RIVAL, FORCE, RED / PRAXIS ZAYANTE / Senicx PR3, PR2, GR3 / FOVNO AURORA

Details

S1 Power Meter Spider

ROTOR ALDHU 110BCD-4S

Chainring / BCD: 110 mm × 4 · 35°
Offset: 7.6 mm
Weight: 98 g

Compatible cranksets

ROTOR ALDHU / ROTOR ALDHU CARBON / QO RACE / QO GRAVA

Details

Mountain

3 models

S1 Power Meter Spider

SRAM 8-BOLT 104BCD

Chainring / BCD: 104 mm × 4 · 45°
Offset: 3 mm BOOST
Weight: 86 g

Compatible cranksets

SRAM EAGLE XX, X0, XX1, GX, X1-CARBON, S100, S200, S500, S1000, 70, 90 / Cane Creek eeWings / FRAEZEN / ALUGEAR

Details

S1 Power Meter Spider

SRAM 3-BOLT 104BCD

Chainring / BCD: 104 mm × 4 · 45°
Offset: 3 mm BOOST
Weight: 82 g

Compatible cranksets

SRAM NX, GX, SX, X1, X01, XX1 / PRAXIS CADET, LYFT / LEONARDI CAPO

Details

S1 Power Meter Spider

SHIMANO MTB 104BCD

Chainring / BCD: 104 mm × 4 · 45°
Offset: 3 mm BOOST
Weight: 87 g

Compatible cranksets

SHIMANO SLX M7100 / SHIMANO XT M8100 / SHIMANO XTR M9200

Details

Track

2 models

S1 Power Meter Spider

EASTON 144BCD

Chainring / BCD: 144 mm × 5
Offset: 13 mm
Weight: 150 g

Compatible cranksets

EASTON EC90 / ELILEE XXE / CYBREI GP3 / INCOLOR SKYPIVOT / CENIT

Details

S1 Power Meter Spider

SRAM 8-BOLT 144BCD

Chainring / BCD: 144 mm × 5
Offset: 13 mm
Weight: 150 g

Compatible cranksets

SRAM FORCE, RED / QUARQ / Cane Creek eeWings / CRODER SPIRIT / 5DEV

Details

RIDER GALLERY

Real riders. Real experiences.

Rides and builds shared by NEXGA S1 owners.

Start training with precision

Progress through data. Perform through technology. The NEXGA S1 power meter spider.

Shop S1

NEXGA S1 power meter spider

Professional measurement, built into every ride.

1% power accuracy

16-Bit ADC

180-hour battery

Dual connectivity

USB-C charging

Ultra-thin, only 95 g*

IPX7 water resistance

Dynamic torque calibration

High-precision six-axis gyroscope

±1% accuracy.Trust every watt.

Every unit verified.Accuracy documented.

Charge quickly.Ride farther.

Multiple devices.Real-time sync.

IPX7 protection, ready for the elements

Broad compatibility.Built for modern frames.

NEXGA S1 specifications

Measurement

Power

Physical

Everything you need to get started.

NEXGA S1

3 m USB-C charging cable

Quick-start guides

User manual

Calibration report

Find your S1

Road

EASTON 110BCD-4S

SRAM 8-BOLT 110BCD-4S

SRAM 3-BOLT 110BCD-4S

ROTOR ALDHU 110BCD-4S

Mountain

SRAM 8-BOLT 104BCD

SRAM 3-BOLT 104BCD

SHIMANO MTB 104BCD

Track

EASTON 144BCD

SRAM 8-BOLT 144BCD

Real riders. Real experiences.

Start training with precision

±1% accuracy.
Trust every watt.

Every unit verified.
Accuracy documented.

Charge quickly.
Ride farther.

Multiple devices.
Real-time sync.

Broad compatibility.
Built for modern frames.