Profile Racing Blackjack Sprocket - 28t, Black

Profile Racing



Reintroducing the 2021 Profile Blackjack sprocket- celebrating 23 years since its inception! Profile Blackjack sprockets are CNC machined from 6061 Aluminum and made in the USA.

  • The Blackjack is a "bolt on" only style sprocket and requires a sprocket bolt to be attached to crank arm.
  • Fits 19mm, 22mm, & 24mm crank spindles: Bore size is 24mm and supplied with 19mm & 22mm adapters.
  • For use with 1/8" chains only


  • Color: Anodized black with post production machining and laser graphics
  • Chain Width: 1/8"
  • Bore: 19mm , 22mm , 24mm
  • Tooth Count: 28
  • Material: Aluminum
  • Adaptor: Includes adapters for 22mm and 19mm crank spindles
  • Interface: Bolt Drive
  • Defined Color: Black