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Click here to buy from FSA USA’s webstore




Along with the continuing standard 53/39, 52/36 and 50/34 options, PowerBox cranks are now available in a Supercompact version as well as larger chainrings sizes for triathlon: 55T, 54T and 42T.


A +/-2% accuracy precision is the key quality you want in a power meter. Nowadays, powermeter cranks represent a fundamental tool that will help riders track their data directly during training sessions and to be increasingly more competitive on race day.


An 86.5mm wide PF30 BB designed for our BB386 EVO cranksets.


BH Burgos
Fundacion Euskadi
Unleash your power with brandnew FSA PowerBox Road

New catchy black graphic, new chainring combination and also available in SuperCompact version. Are you ready to unleash your power with the new FSA Powerbox?


 FSA’s ROAD PowerBox Carbon Crankset employs a P2M convertible spider design for multiple chainring options. FSA's hollow carbon arms and BB386EVO spindle mated together produce a very lightweight, extremely versatile power meter crankset available with a double chaining configuration.

Now available for download and purchase are the PowerBox Upgrades for the FSA PowerBox giving additional data during the ride and for analyzing your training sessions. Upgrades available are:

Bluetooth (included)
With this upgrade your FSA PowerBox can transmit data via Bluetooth Low Energy (BLE or Bluetooth Smart) to your bike computer.

Left/Right-Balance (included)
The L/R balance shows you the percentage each leg is contributing to your total power output. (power left = pressure on the left pedal + pull up on the right pedal; power right = pressure on the right pedal + pull up on the left pedal).

Pedal Smoothness upgrade
Pedal smoothness is an advanced metric for riders who want to optimize their pedaling. It shows you how evenly power is applied throughout the whole 360 degree pedal rotation. FSA PowerBox power meters collect the data for both legs combined. Please note that transmission of this data to your bike computer is only possible via ANT+.

How? Go to the Support page on our website, log in and buy the upgrades you need following the instructions.


  • Hollow carbon arms with UD carbon finish
  • Forged and then CNC machined AL6061 spider
  • 30mm forged AL7050 BB386EVO spindle (purchase BB separately)
  • AL7075 100% CNC stealth BLACK chainrings
  • New chainring available: 55T, 54T and 42T for Triathlon and Time Trial; 46/36T for Cyclocross
  • Optimized for 11-Speed systems
  • Including - R/L Balance and Bluetooth
  • Spider-based power sensors provide total power output measurement of both legs, with Left & Right leg output analysis
  • System upgrades*: Pedal Smoothness.

*System upgrades available >here<


Code Type
328-0001553030 AAACK ROAD PBOX Carbon ABS 50x34T 170mm N11 V17
328-0001554030 CK ROAD PBOX Carbon ABS 50x34T 172.5mm N11 V17
328-0001555030 CK ROAD PBOX Carbon ABS 50x34T 175mm N11 V17
328-0001556030 CK ROAD PBOX Carbon ABS 50x34T 177.5mm N11 V17
328-0001557030 CK ROAD PBOX Carbon ABS 50x34T 180mm N11 V17
328-0001742030 CK ROAD PBOX Carbon ABS 52x36T 165mm N11 V17
328-0001743030 CK ROAD PBOX Carbon ABS 52x36T 170mm N11 V17
328-0001744030 CK ROAD PBOX Carbon ABS 52x36T 172.5mm N11 V17
328-0001745030 CK ROAD PBOX Carbon ABS 52x36T 175mm N11 V17
328-0001746030 CK ROAD PBOX Carbon ABS 52x36T 177.5mm N11 V17
328-0001747030 CK ROAD PBOX Carbon ABS 52x36T 180mm N11 V17
328-0001292030 CK ROAD PBOX Carbon ABS 53x39T 165mm N11 V17
328-0001293030 CK ROAD PBOX Carbon ABS 53x39T 170mm N11 V17
328-0001294030 CK ROAD PBOX Carbon ABS 53x39T 172.5mm N11 V17
328-0001295030 CK ROAD PBOX Carbon ABS 53x39T 175mm N11 V17
328-0001296030 CK ROAD PBOX Carbon ABS 53x39T 177.5mm N11 V17
328-0001297030 CK ROAD PBOX Carbon ABS 53x39T 180mm N11 V17
328-0001552030 FSA CK Carbon POWERBOX ABS 50x34 165mm


Type Powermeters
Technology ABS, BB386EVO, Hollow Carbon
Discipline ROAD
Color Neutral
Weight (gr) 733
Compatibility BB386
Bolt Circle Diameter (BCD) 110ABS
Crankset Type Double
Drivetrain Compatibility Shimano 10/11S, Sram 10/11S, FSA 11S
Holes Number 4
Material Carbon