Gone are the days of having a dedicated bolt pattern for standard chainrings and another for compact rings no longer will changing from traditional to compact or vice versa translate into the obligatory purchase of a completely new crankset the new bolt pattern allows for all 3 chainring standards 5339 5236 and 5034 to be built upon the same crankset changing between compact and standard is now as easy as changing 8 bolts and two chainrings while the new 4 arm bolt pattern makes for a