Powerbox SuperCompact Stealth BLACK Chainring


* Required Fields

Click here to buy from FSA USA’s webstore


Shifting performance has helped Full Speed Ahead to become a world leader for high-end chainrings. No one studies the design and manufacturing of each system, and each tooth, as carefully as we do. Our dedication shows in every revolution of the crank, and every perfect shift achieved. To meet or exceed the needs of any drivetrain, Full Speed Ahead has developed sophisticated design, testing and manufacturing protocols. This allows Full Speed Ahead to match your needs as perfectly as our chainrings match a chain. We offer more options, levels, and finishes than our competitors. We use the best materials available, imported from the USA, or Europe, or sourced from our qualified vendors in Asia, to guarantee the durability, performance, and appearance will out perform, and outlast the competition. Full Speed Ahead chainrings have powered multiple World, Tour de France, and Olympic champions, and will exceed your expectations.


  • Precision CNC machined AL7075/T6
  • Shifting ramps and stainless steel pins on outer rings
  • Black anodized
  • Laser etched logo
  • BCD: 120/90mm
  • Crankset Compatibility: FSA POWERBOX SuperCompact


Code Type
370-0042021050 CR ROAD GOSSAMER 90x30T N11 B1
370-0041001050 CR ROAD MODULAR 90x32T N11 B1
370-0120003010 FSA POWERBOX SuperCompact Stealth BLACK chainring - 46T
370-0119004010 FSA POWERBOX SuperCompact Stealth BLACK chainring - 48T


Type Chainrings
Color Black, Neutral
Discipline ROAD, GRAVEL
Material Alloy
Compatibility Powerbox SuperCompact, ENERGY Modular, SL-K modular
Bolt Circle Diameter (BCD) 120, 90
Crankset Type Double
Drivetrain Compatibility Shimano 10/11S, Sram 10/11S, FSA 11S
Holes Number 4