pistons

[RHODESIE]

rebuilding a 2016 800 and noticed that the piston part numbers are different between the 16 and the 17-18. the newer ones are way more money also. anyone know the difference ?
is there any reason why the newer part number can't be used in the 16? the cylinder part numbers are the same. i talked to a couple different dealers and they have no answers for me.

 

[Sheetmetalfab]

rebuilding a 2016 800 and noticed that the piston part numbers are different between the 16 and the 17-18. the newer ones are way more money also. anyone know the difference ?
is there any reason why the newer part number can't be used in the 16? the cylinder part numbers are the same. i talked to a couple different dealers and they have no answers for me.

Best pistons are from the 2015 pro rmk. (Yes they fit and work great)

also cheaper.

 

[raleigh111]

oil grooves on exhaust side on newer pistons. I used a set of spi last year and they worked great. I took a chance and was happy. Forget about ball hones and such, leave it nice and smooth. Also check ring end gap, I had to sand a couple rings down. The spi pistons had the oil grooves on both sides.

 

[RHODESIE]

spi even has different part #'s for 16, 17-18. says the newer ones are anodized. 10 bucks per piston more. i would like to know why they have different pistons between the 16's and the 17-18's. from what i gather dimensionally the pistons are the same from 2008 until current.