The JE single piston sized 3.385 for Honda XR400R applications. Sold as an individual replacement piston, it’s intended for engine rebuilds and routine maintenance requiring correct bore sizing. This single piston helps restore piston-to-cylinder fit and compression, providing the sizing needed for proper function during a top‑end service on the XR400R.
JE Pistons 3.385 Honda XR400R Piston Single