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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.


The PowerBox Alloy Crankset is very attractively priced and is backed by consistent and reliable performance.


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 Alloy Crankset employs a P2M convertible spider design for multiple chainring options. FSA's alloy 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 upgrade
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.




  • Cold forged AL6061/T6 aluminum crank arms
  • BB386EVO 30mm AL 7050 alloy spindle fits every frame (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
  • Chromoly chainring bolts
  • Fits Shimano and SRAM 10-11 speed systems
  • Including - Bluetooth
  • System upgrades*: Left/Right-Balance; Pedal Smoothness.
  • Spider-based power sensors provide total power output measurement of both legs, with Left & Right leg output analysis available with system upgrade*

*System upgrades available >here<


Code Type
328-0002553010 CK ROAD PBOX Alloy ABS 50x34T 170mm N11 V17
328-0002554010 CK ROAD PBOX Alloy ABS 50x34T 172.5mm N11 V17
328-0002555010 CK ROAD PBOX Alloy ABS 50x34T 175mm N11 V17
328-0002743010 CK ROAD PBOX Alloy ABS 52x36T 170mm N11 V17
328-0002744010 CK ROAD PBOX Alloy ABS 52x36T 172.5mm N11 V17
328-0002745010 CK ROAD PBOX Alloy ABS 52x36T 175mm N11 V17
328-0002293010 CK ROAD PBOX Alloy ABS 53x39T 170mm N11 V17
328-0002294010 CK ROAD PBOX Alloy ABS 53x39T 172.5mm N11 V17
328-0002295010 CK ROAD PBOX Alloy ABS 53x39T 175mm N11 V17


Type Powermeters
Technology ABS, BB386EVO, No
Discipline ROAD
Color Neutral
Weight (gr) 921
Compatibility BB386
Bolt Circle Diameter (BCD) 110ABS
Crankset Type Double
Drivetrain Compatibility Shimano 10/11S, Sram 10/11S, FSA 11S
Holes Number 4
Material Alloy