Yep that's right. the 2004 Honda's CBR 954RR has 75mm pistons. and they are forged. But I can't find any information on them as to their wrist pin diamater, width, compression height, if they are dished or domed, and their total height.

If anybody finds this info, post it on here, this could be another alternative for us D series folk, that are searching for cheap pistons and rods when upgrading the bottom end of our motors.

 

did they even make a 954rr in 2004...the 1000rr replaced it in 2004....

 

well the new 954 is the 1000rr, and they have 75mm pistons.

 

then its not a 954rr its a cbr 100rr....

 

what CR would that yeild in a D-series?

 

My bad, it's really a 1000RR, and it's not actually that it's TECHNICALLY a 998cc.

BUT people get my point. Anybody know what the specs are on these new HONDA CBR 1000RR 75MM PISTONS?



I dunno what CR that would be, because you need to know the compression heigh, and if they're domed, dished, flat topped and by what cc to determine the effective CR with the block heigh, stroke/2, rod length, gasket thickness, head combustion chamber cc. bore ans again stroke.

Anybody?

 

bump

 

A single piston shouldn't be expensive at all, so you may want to pick one up just for the sake of research. The biggest concerns are compression height and valve relief location, you can always rebush the rods for different wrist pins.

 

so compression heigh, writst pin size, valve relief location, what else is needed to know if this will blow up my motor or not? LOL