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Discussion Starter #1 (Edited)
Compression is supposed to be 11.6:1 according to their spec sheet for the new TLX (2.4L). I think the part number is 13010-RDF-A00 for the standard (A) option. 13020-RDF-A00 for option (B) and 13030-RDF-A00 for oversize? Sorry if this has been covered already but I can't find shit on it.

EDIT/UPDATE: Ordered 1 piston, pics below...

2015









 

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Compression is supposed to be 11.6:1 according to their spec sheet for the new TLX (2.4L). I think the part number is 13010-RDF-A00 for the standard (A) option. 13020-RDF-A00 for option (B) and 13030-RDF-A00 for oversize? Sorry if this has been covered already but I can't find shit on it.
yep it should be ~ 11.6:1, would be nice that somebody compared with other TSX pistons :)
 

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Discussion Starter #8
Pics in first post.

If anyone has some 09 piston specs I could take some measurements. I was able to weigh my 09 pistons before I put my motor together and they weighed 334g. These 2015 pistons weigh 321g on the same scale. These definitely have more meat on top except for the quench pad cnc'd in the middle near the intake side. Wrist pin looks to be the same.
 

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Pics in first post.

If anyone has some 09 piston specs I could take some measurements. I was able to weigh my 09 pistons before I put my motor together and they weighed 334g. These 2015 pistons weigh 321g on the same scale. These definitely have more meat on top except for the quench pad cnc'd in the middle near the intake side. Wrist pin looks to be the same.
these pistons are designed for direct injection (car can work with lean AFR without detonations) so it has notch near intake, interesting how these peformed in K24a2 engine.
 
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