Rotor INSpider Power Meter Crank Spider

Item number: 74177

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Rotor INSpider Power Meter Crank Spider - black/universal
Rotor INSpider Power Meter Crank Spider - black/universal
Rotor INSpider Power Meter Crank Spider - black/universal
Rotor INSpider Power Meter Crank Spider - black/universal
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.84 / 5.00

The Rotor INSpider Power Meter Crank Spider - Unlimited compatibility

Rotor's INSpider power meter spider is a power meter that can be attached to all modular Rotor Direct Mount cranks, such as ALDHU or R-Raptor, thus providing them with a reliable and state-of-the-art power measurement function. On its interior you'll find a rechargeable battery and electronics sealed under a waterproof cover. The spider delivers combined left-right values to accurately determine power and cadence. Whether MTB or Road, using one or two chainrings, the INSpider is suited for every type of bike and rider.

Information regarding the return of batteries and electrical equipment:

Information on the return and disposal of used batteries, accumulators and electrical equipment can be found here.


Application: Road, Triathlon & Time Trial, Cyclocross, Cross Country, Enduro, Downhill
Type: crank spider with power measurement (on both sides)
Compatibility: 1-speed, 2-speed
Chainring Mount: 110 mm pitch circle, 4-arm asymmetrical

Technical Information:

Material: aluminium (7075)
Tolerance: +/- 0.5 %
Point of Measurement: spider
Power Source: integrated lithium-ion battery, rechargeable
Battery Life: 200 h
Data Collected: power, cadence
Waterproof: IPX7
Data Transfer: ANT+, Bluetooth


- ALDHU cranks
- ALDHU 24 cranks
- VEGAST cranks
- KAPIC cranks
- KAPIC Carbon cranks
- R-Hawk cranks
- R-Raptor cranks
- Rotor 110x4 1x, 2x Road bike and 1x MTB chainrings, round or oval
- Bluetooth Smart and ANT+ make it compatible with almost all popular bike computers


- mounting and retrofitting of any rotor OCP Direct Mount crank for 1x and 2x Road and MTB possible
- can also be combined with 24 mm axles
- very light
- integrated rechargeable battery with up to 200 h operating time (rechargeable battery permanently installed and cannot be replaced independently)
- measurement on both sides (left, right, combined)
- protected electronics encapsulated in housing
- magnetic charging connection (waterproof)
- can be mounted with a 10 mm hex key, no special tools required
- 100 % CNC-machined
- Aero Crown optionally available


INSpider Functionality
The INSpider measures the combined performance of both legs via 4 counter-rotating strain gauges. It delivers highly accurate performance data and indicates areas for potential improvement. The spider contains a thermometer and compensates independently for measurement deviations due to temperature fluctuations. The spider must be recalibrated at least once a month and after every mounting or replacement of the chainring.

Aluminium CNC
Computer Numerical Control (CNC) milling ensures a precise and uniform production process. This is particularly important when manufacturing components that must function properly and work in congruity with other parts. Thanks to state-of-the-art CNC equipment, Rotor parts are manufactured with extreme precision, down to a hundredth of a millimetre.


- 1 x Rotor INSpider power meter crank spider


  • black/universal: 149 g


in stock 2 to 7 days up to 10 days Out of stock inform me
  • black/universal

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