FSA Powerbox Alloy SuperCompact

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Click here to buy from FSA USA’s webstore




Whether it’s tackling gravel terrain or hitting steep gradients on the road, there are times when using even a compact crankset can leave you wishing you had another gear or two.


The 90mm bolt-circle diameter crank spider has been reworked which allows the smaller ring to be direct-mounted, similar to one-by systems. This ultimately saves weight and improves the stiffness of the chainset.


It is very versatile and allows the rider to stay in the middle of their cassette for longer, improving the chainline and thus efficiency.


Wildlife Generation Pro Cycling Team
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 SuperCompact 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
  • BCD: 120/90mm
  • Supercompact chainrings: 48/32T and 46/30T
  • Chromoly chainring bolts
  • Optimized for 11-12 Speed systems
  • Weight: 968.1 gr (48/32) | 933.5 gr (46/30) w/o BB
  • 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
328-0010BJ3010 CK ROAD PBOX Alloy 120/90 46x30T 170mm
328-0010BJ4010 CK ROAD PBOX Alloy 120/90 46x30T 172.5mm
328-0010BJ5010 CK ROAD PBOX Alloy 120/90 46x30T 175mm
328-0010AJ3010 CK ROAD PBOX Alloy 120/90 48x32T 170mm
328-0010AJ4010 CK ROAD PBOX Alloy 120/90 48x32T 172.5mm
328-0010AJ5010 CK ROAD PBOX Alloy 120/90 48x32T 175mm


Type Powermeters
Technology BB386EVO
Discipline ROAD, GRAVEL
Color Neutral
Weight (gr) 968.1; 933.5
Compatibility BB386
Bolt Circle Diameter (BCD) 120
Crankset Type Double
Drivetrain Compatibility Shimano 10/11S, Sram 10/11S, FSA 11S
Holes Number 4
Material Alloy