Crupi Rhythm Pro Select BMX Race Cranks-Black Crank Arm Length:170mm Made with a lightweight aluminum

Made with a lightweight aluminum alloy caliper body and swingarm which allows for efficient stopping power without much added weight

and more reliable power transfer

COMPRESSION BOLT: Updated 7075-T6 pre-load bolt

Available in both Mini (1") and Pro ( 1 1/8") sizes as well as multiple lengths and colors

110mm hole pattern High tooth profile for accuracy and to hold even the tallest chains CNC out of 6061-T6 aircraft aluminum for the highest quality

Crupi Rhythm Pro Select BMX Race Cranks-Black Crank Arm Length:170mm Made with a lightweight aluminumThe Crupi Rhythm Pro Select Cranks Black at J&R Bicycles are high quality cranks built for max strength with minimal weight added to your drivetrain. These cranks are designed with hollow cold forged aluminum alloy arms to deliver lightweight strength with added rigidity for super stiff responsiveness. The 10 spline spindle is made from heat treated chromoly alloy for increased durability and is compatible with most BB shell types. Made with a