Eastern Bikes Piston Gyro 2014 Edition BMX Bike Gyro which is a cable Detangler system that allows the handlebars to be spun around infinitely with out getting tangled Fully sealed 36 hole cassette rear hub and a 1pc 9T chromoly driver 14mm chromoly axle and 5 sealed bearings Eastern Phorcys micro gearing with 25T sprocket and 9t driver