Pistons specs question for 340 build

I called up both UEM (who make KB Hypers) and DSS Racing and was surprised I got straight onto the right tech guy in each case within 2 minutes. Both guys were really helpful and friendly and went and weighed some similar pistons. Both were within 5g of each other, at around 580 +/- 10g + 132g pin so that's interesting.


The difference is in the ring pack. The KB’s use the 5/64-3/16 ring pack and the DSS use a 1/16-3/16 ring pack. The thinner ring pack is way more important than piston and pin weight.