1997-2001 Honda TRX 250 Recon ATV Engine Piston Ring Kit [Bore Size (mm): 69.45] Piston Size (mm): 69.45 Ring Kits Include Piston Rings Only - Piston Not Included Namura Piston Rings Fit Both Namura and OEM Pistons of the Same Bore Size Unless Otherwise Specified Compatibility: 1997-2001 Honda TRX 250 Recon