Good reply and pictures for the comparison. A few questions:
1) can you use a lighter pin?
2) how much are the Carrillo's?
3) how much lighter(if at all) are aftermarket pistons?
4) can you get a longer than stock rod and piston combo to work?
5) what would you consider a safe piston to valve clearance with a stock rod, with a carrillo, with a TI?
6) How much does a lighter combination allow you to increase the rev's too?
Sorry for the questions, I just don't have any experience with the Duc's internals YET! Stock has been fine for my abilities but that could be changing next season I hope
.