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