What length REVO or REVO-A do you recommend? Related articles Should I go with the 12" or 13" shock? What is the difference between the REVO and the REVO-A? Do I need Standard or Heavy Duty springs? Do I need to re-adjust my belt tension by going to a 13" rear shock? What is the difference between the REVO, REVO-A, and REVO ARC?