Does anyone know the part number for the .25mm overbore CTR pistons?

is their anyway to tell the overbore piston apart from the standard size?

My machinist says i have standard size pistons cause thiers no markings on the box about being oversized, something about their being a different part number for the overbore pistons.

help!!


Also..... I'm using eagle rods with the CTR pistons, is their any reason I can't use regular snap rings rather than spiral locks to attach them?

 

13020-PCT-000................I think since I don't have a set in front of me at home. I have a few sets at work but I'm at home right now.

I'm 90% thats right but then again I'm known to mix up my part #

 

Thank you, That's exactly what I have on my piston boxes any idea what the number is for regular CTR pistons without the .25mm overbore?

I want to really make sure that thier's no way I got the wrong pistons.....

 

I believe 13010-PCT-000 is 81mm standard bore.

Just like the Ring part numbers.

 

Thank you very much. Looks like I got the right pistons after all.

The rings I got with my pistons are 13021-PR3-003, I know PR3 isn't the part number for the type-R but they seem to be the right size so far....

Any idea what's so special about Spiral locks as compared to regular snap rings for attaching your rods to pistons??