Rex INpower Power Meter

Ultimate XC Crankset

Silver Medal in Rio, and too many World Cup podiums to count.

  • Sale
  • $626.75
  • Regular price $849.00

  • Weight: 549g
  • Lengths Available: 170, 172, 175
  • 30mm Spindle Only
  • Compatible with: BSA, BB30, BB30a, BB89, BB92, PF30,

Product Description

Discover where you push hardest in your pedal stroke, despite varying terrain How you transfer power off-road will vary as much from the way you ride as to where you ride. INpower REX 1.1 single chainring 1x cranks place power meter technology inside the crank axle where is protected it from loose rocks and other shocks, crashes, and outside contaminants like mud, sand, and clay. If you know your Optimum Chainring Angle, which you can find with INpower's TORQUE 360 and OCA pedal analysis, you can dial in your oval QX1 rings to your advantage. CNC-machined in Spain from 7055 aluminum, the INpower REX 1.1 for MTB features unprecedented data sampling technology, which takes into account abrupt changes in terrain like jumps and drops to accurately measure your power output.


  • - Spider: 76 BCD or ROTOR Direct Mount
  • - Battery specifications: AA 1.5 V
  • - Estimated battery life: 300 hours riding time
  • - Water resistance: IPX7
  • - Strain gauges: 4 gauges in the axle
  • - Wireless technology: ANT+™ 2.4 Ghz
  • - Data transmitted: power, cadence, TORQUE 360, OCA, torque effectiveness (left side), pedal smoothness (left side)
  • - Head unit: ANT+™ compatible head units
  • - Analysis Software:
  • - Crank Software: ROTOR INpower User Software
  • - Q-Factor: 163 mm
  • - Chainline: 50.6mm
  • - Material: aluminum alloy 7055 100% CNC-machined
  • Cannondale F-Si Ai (spider sold separately), oval and round chainrings, 76BCD, 9,10 and 11 speed

Product Video