This Y6 Full CrMo sprocket is entirely made from HEAT TREATED 4130 CRMO steel material, 1/8″ width. CRMO sprocket avoids the most common problem on the Alloy sprockets spline drive interfact. A CRMO sprocket also has better strength and longer life than the Alloy sprocket. Some people might be concerned about the weight, but our Y6 sprocket its almost the same as other Alloy spline drive sprocket(33T 167g), so why not to change to the CRMO sprocket and ride safe.
