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  1. ATV Performance Modifications
    2019 Polaris sportsman 570 Recently I was out riding when I got water in the oil and blew up the motor on the fourwheeler. I pulled the motor out and did a rebuild on it, put a new crank shaft, new bearings and decided to go with a 104mm big bore kit. Since I did the big bore kit I put on a big...
  2. Polaris XP
    Anyone heard anything else on a polaris 550xp big bore kit?? I heard multiple rumors about it but haven't heard anything in a while.
  3. ATV Performance Modifications
    I purchased a JE Big Bore kit for my 03 Polaris Predator 500. I was forced to get a 12.5:1. I don't want to run race gas and was wondering how much I would have to have the piston machined down to lower the compression to 11:1. Please help parts are almost done at the shop and I want to get it...
1-3 of 3 Results