I bought a 2015 600 z force side by side. It only has 600 miles on it but whoever owned it beat it up badly. The motor has a knock in it and changed oil and case was full of dirt. They obviously never changed air filter. Everything was packed with dirt.I flushed motor 3 times and it is dirt free but still has knock in it.

My question is where is the best place to purchase new parts for engine rebuild. I see things on ebay but thought maybe someone has had same problem and bought from a reputable vendor in the past. Thanks for any help.

Brian