wiseco piston part #'s

[wizkid]

Does anyone know what the difference between a wiseco vt-1719 and a vt-2719 is, if any? Ring style? Also are the skirts coated? Thanks for any info.

[FSG]

[choseneasy]

Same compression---why does one need ignition changes and the other does not?

[RoadKingRon]

The rings have different widths....friction is reduced with smaller-narrower rings. Valve pocket depth is deeper on the 2719. Now maybe someone has ran both can give us there results?

[wizkid]

Thanks for the responses............the catalog print out explained it well. Wiz