I just finished installing them in my 2002 800. I had a slight meltdown on my PTO piston so I decided to replace both. I have 2,600 miles on the sled. I highly recommend them. Piston pins slide through so no pressing or tapping is required.madmaxx said:How many of you have installed Cudneys pistons & rings in your 800's? What mileage did you do it at? Would you recommend them as replacements?