What is a FTK?
FTK is a full tune-up kit. It includes all the parts to upgrade everything in your mechbox. Items included: -Cylinder set (cylinder, cylinder head) -Piston head -Piston -Spring -Anti-reversal latch -Metal bushings -(some kits include a selector plate, switch assembly, or even a battery pack) The FTK’s come in a range that you select based on your mechbox version and what kind of spring strength you are seeking.