Our shop just bought a 2005 900 RMK with a broken exhaust valve which led to a damaged piston and cyl. I am wondering which pistons we should put back in it. We want to do it right as it will be resold and want the next owner to have a trouble free sled. I have used Wisecos in some of my personal sleds with excellent results but I know they are getting a proper warm up. I believe in OEM pistons as a good product but they are quite pricey. I don't know much about the SPI pistons and am looking for some feedback from someone who has used them. We are in the sled right and want to fix it right because that is how we operate.