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The JE single piston for 2017–2020 Kawasaki Ninja 650 is sized at 83mm and specified with a 12.0:1 compression ratio, sold individually for targeted engine work. Designed for single‑piston replacement during maintenance or rebuilds, it corresponds to the listed bore and compression for those Ninja 650 years. Choose this option when servicing a single cylinder without replacing the full set.
JE Pistons 17-20 Kawasaki NINJA 650 - 83MM/12.0 to 1 Piston Single
