The Box Pinion (Box One) is a CNC-machined 3/32" chromoly cog. It is designed to fit Shimano™ compatible cassette hubs and has a 5mm wide inner base, giving a more solid interface with the cassette body. This style of cog will fit many BMX cassette hubs like the Shimano DX, DXR, Sinz, Bombshell, Redline, Haro, Rhythm and many many others.
Size: 13t
Color: Black
