Profile Racing Blackjack Sprocket - 28t, Black

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