We put together an oil change kit for the Kawasaki KRX 1000 using the same stuff we run in our race cars. We have a ton of race miles to prove this stuff works in the gnarliest conditions.
Kit comes with 4 quarts of Amsoil 5w-50 (works great in a large variety of riding conditions and temperatures) motor oil and a K&N oil filter.
You can add a Wix air filter for a complete service kit