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165mm - 50/34 Compact
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165mm - 50/34 Compact
Pioneer SBT-PM91 Dura Ace R9100 Dual Leg Power Meter
Pioneer SBT-PM91 Dura Ace R9100 Dual Leg Power Meter
Pioneer SBT-PM91 Dura Ace R9100 Dual Leg Power Meter

SBT-PM91 Dura Ace R9100 Dual Leg Power Meter

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Power meters are an essential weapon for any serious cyclist. With the first and only power meter that measures the output and pedaling stroke efficiency of each leg, in real time, its possible to know more about your ride than ever before. Pioneer delivers advanced precision and accuracy with force detection every 30 degrees of revolution resulting in 24 locations across both crank arms. Make on-the-fly adjustments and be confident that you’ve got the information you need to better your technique and efficiency at your fingertips. When used with a Pioneer or Wahoo® ELEMNT and ELEMNT BOLT cycle computers, you’ll see graphically displayed force vectors in real time which helps you make immediate adjustments to your pedal stroke and get better, faster.

Installation and setup are a breeze with the Pioneer Cyclo-Sphere Control App. Manage everything - power meter functions, mode switching, magnet calibration, zero calibration, pedal copy and firmware updates simply with our intuitive iPhone or Android interface. It really doesn’t get any easier. It is even possible to connect to your smart trainer via ANT+ or Bluetooth Low Energy. For some computers, like the Pioneer Wahoo ELEMNT and ELEMNT BOLT cycle computers, the Pioneer Power Meter Pedaling Monitor System shows precise pedaling efficiency and power metrics for each leg, in real time. The force vector graph displays power utilization and loss for each pedal stroke, so you always know your exact output. Pioneer’s Cyclo-Sphere Analysis PC tool and app give you more post-ride analytics than ever before. Bluetooth connection from the Pioneer SGX-CA600 cycle computer provides immediate analysis on the go while direct Bluetooth connection from the power meter provides real-time force vector display and power data right on your mobile device. It is also possible to use rider sites like STRAVA® or Training Peaks®. Cyclo-Sphere uploads your numbers at the touch of a button. Get the whole picture – always.

Pioneer knows you’re out there pushing yourself so they made sure their Power Meters are dependable, durable and built to resist the harshest conditions. Their products are tested to exceed the performance standards of the world’s toughest users – professional cycling teams and triathletes. With superior battery life and a lightweight but robust design, dust and water don’t stand a chance.


  • Bluetooth & ANT+ transmission
  • Discrete L/R Zero Calibration Memory
  • Swappable chainrings
  • +/-2% auto thermal compensation circuit accuracy
  • 12-point force direction measurement
  • one strain gauge for each crank arm

165mm - 50/34 Compact

Mfg PartNum: SBT91-5034-165 

170mm - 50/34 Compact

Mfg PartNum: SBT91-5034-170 

172.5mm - 50/34 Compact

Mfg PartNum: SBT91-5034-1725 

175mm - 50/34 Compact

Mfg PartNum: SBT91-5034-175 

165mm - 52/36 Mid Compact

Mfg PartNum: SBT91-5236-165 

170mm - 52/36 Mid Compact

Mfg PartNum: SBT91-5236-170 

172.5mm - 52/36 Mid Compact

Mfg PartNum: SBT91-5236-1725