ROTOR INspider MTB KAPIC Aluminum Power Meter

The ROTOR INspider MTB KAPIC Aluminum Power Meter features the new INspider MTB on a KAPIC crankset. The INspider MTB is a spider-based power meter that offers dual-leg power measurement. It’s accurate to 1.5%, has a 350-hour rechargeable battery and is extremely lightweight at only 105 grams. It fits both round and oval 1x chainrings which are available in sizes as small as 30T.

In addition, the KAPIC crankset is ROTOR’s go-to all terrain MTB crankset. It weighs just 545 grams (170 mm with 32T rings) and is also exceptionally stiff. It fits Standard (142 mm) and Boost (148 mm) frames.

Key Product Details

Compatibility:

This power meter fits 30 MM MTB bottom brackets and ROTOR 100 BCD 4-bolt 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, fits standard and boost frames, 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 one of our favorite new MTB cranksets. The INspider MTB measures power from both legs, is accurate and reliable. It’s also lightweight and works with round and oval chainrings as small at 30T. The KAPIC aluminum crank arms are not quite as light and stiff as the carbon version, but it’s still a very nice crankset and we think $899 for the power meter, cranks and chainring is a fair price!

Options For This Power Meter

Crank Arm Length: 165 mm | 170 mm | 175 mm
Chainring Size: 30T | 32T | 34T | 36T
Chainring Shape: Round | Oval
Spacing: Boost | Super Boost

Other Versions to Consider

INspider KAPIC Carbon: We also sell the ROTOR INspider KAPIC Carbon MTB Power Meter. It costs a bit more money, but features carbon fiber crank arms.

Compatibility

Chainrings: The power meter is compatible with ROTOR 100×4 Chainrings, which are available in round and oval and can be purchased on this page along with the power meter.

Bottom Bracket: This power meter fits 30 MM bottom brackets. If you currently have a 30 MM crankset on your bike, you should be able to re-use your existing bottom bracket. However, if you are changing spindle sizes, you will need to replace your bottom bracket.

Frame Spacing: The power meter fits both Standard and Boost frames based on the version ordered.

ROTOR INspider MTB KAPIC Aluminum Crankset Specs

Name	ROTOR INspider KAPIC Aluminum MTB
Bike Type	MTB
Location of Power Measurement	Spider
Left or Both Legs Measured	Both
Independent Left/Right Measurement	Yes - Power Balance
Installation	More involved (60 min. estimated)
Chainring Configuration	1X
Speeds	11- and 12-speed Shimano and SRAM
Chainline Spacing	Boost and Super Boost
Crank Arm Material	Carbon
Communication Protocol	ANT+ and Bluetooth SMART
Claimed Accuracy	+/- 1.5%
Active Temperature Compensation	No
Weight	665 grams (175, 32T)
Battery Type	Rechargeable
Battery Life	350 hours
Method of Cadence Measurement	Accelerometer
BCD	100 mm 4-bolt asymmetric
Spindle Size	30 mm
Q Factor	Varies based on crankset
Warranty	2 years