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ROTOR INspider VEGAST Road Power Meter Crankset

Josh Matthew August 18, 2025

$899.00

The INspider paired with ROTOR’s budget friendly VEGAST crank arms

INCLUDES YOUR CHOICE OF CHAINRINGS! SEE CHAINRINGS SECTION BELOW

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ROTOR INspider VEGAST Road Power Meter Crankset

The ROTOR INspider VEGAST Road Power Meter Crankset features the INspider paired with ROTOR’s budget friendly VEGAST crank arms. This is a dual-sided crankset that performs as good as it looks, without costing as much as the ALDHU version. Additionally, the INspider power meter is only 12 mm thick which allows it to work with even the widest bottom bracket shells, including T47 and 386 EVO.

This crankset is also highly customizable as you can select your spindle diameter, crank arm length and chainrings. The ROTOR VEGAST cranks are available with both 24 and 30 mm spindles and a wide range of crank lengths. The INspider can be used in a 1x or 2x chainring configuration with any ROTOR 110 BCD 4-bolt chainring.

The ROTOR INspider records data via four sets of opposing gauges. It is +/- 1.5% accurate and provides advanced metrics like left and right leg power balance. It is also compatible with Garmin Cycling Dynamics to provide in-depth data on your riding. ROTOR power meters have a higher sample rate than most power meters which allows them to more accurately measure power with both round and oval chainrings. The INspider can be run in either a 1x or 2x chainring configuration using any ROTOR 110 BCD 4-bolt chainring.

 

~Chainrings~

ROTOR offers several different chainrings that fit this power meter…too many for us to list in the menus above! So on the Checkout Page, just tell us what chainrings to include in your order. No need to add the chainrings you want to your cart – the cost is included with the power meter here! Please view all available ROTOR power meter chainrings.

 

Key Product Details

Compatibility:

This power meter crankset fits 24 mm and 30 mm road bottom brackets, depending on the spindle selected. It works with a wide selection of ROTOR chainrings. See Compatibility tab for more information.

Power Measurement:

The ROTOR INspider power meter measures power at the spider and is therefore able to measure power from both legs.

Key Features:

Dual-leg power measurement, accurate to +/- 1.5%, 350 hours of battery life, 1x and 2x compatible, works great with oval chainrings, rechargeable battery, left/right power balance, ANT+ and Bluetooth compatibility. See Specs tab for more information.

Advice From Our Staff:

This is a fantastic crankset for riders looking for accurate and reliable power at a more affordable price. The ROTOR power meter measures power from both legs, is accurate and reliable. The VEGAST crank arms are modeled after the more expensive ALDHU arms, but are more affordable. In addition, you can also run this power meter in a range of configurations (different crank arms, spindle sizes and chainrings) to fit your needs.

 

Options

  • Crank Arm Length: 165 mm | 170 mm | 172.5 mm | 175 mm
  • Spindle Size: 24 MM | 30 MM

 

Other Versions to Consider

ROTOR INspider ALDHU Crankset: We also have the ROTOR INspider ALDHU Road Power Meter Crankset which features ROTOR ALDHU crank arms. This version is a bit more expensive, but the ALDHU arms are lighter and available in more crank lengths.

Compatibility

Chainrings: This power meter is compatible with a wide selection of ROTOR 110 BCD 4-bolt chainrings. They are designed to work with 9-, 10-, 11-, 12-, and 13-speed groupsets.

Bottom Bracket: This power meter crankset works with 24 mm and 30 mm bottom brackets, depending on the spindle option selected.

Note - This crankset uses the ROTOR Standard Road Axle. It is designed for road bikes and will not work with gravel bikes that can accommodate 50c or larger tires.

ROTOR INspider VEGAST Road Crankset Specs

NameROTOR INspider VEGAST Crankset
Bike TypeRoad
Location of Power MeasurementSpider
Left or Both Legs MeasuredBoth
Independent Left/Right MeasurementYes - Power Balance
InstallationMore involved (60 min. estimated)
Crank Arm MaterialAluminum
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.5%
Active Temperature CompensationYes
WeightVaries based on configuration
Battery TypeRechargeable
Battery Life350 hours
Method of Cadence MeasurementAccelerometer
BCD110 4-bolt asymmetric
Spindle Size24 mm or 30 mm
Q Factor147 mm
Warranty2 years

In the Box

  • ROTOR INspider power meter
  • ROTOR VEGAST crank arms
  • ROTOR Standard Road Spindle
  • 1x Chainring bolts
  • 2x Chainring bolts
  • USB cable for charging
  • User's manual

Tools Needed for Installation

You will need the following tools for installation of this product. You can purchase many of these commonly used tools in our store.

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