Rebuilding a 1993-1996 Sea-Doo with a 657 or 657X engine? This piston and ring set from SBT has you covered. The pistons are cast from high-silicone aluminum for strength and heat resistance, with an anodized top and graphite-coated skirts to reduce friction. Each set includes new wrist pins and C-clips. The rings are chromium-plated ductile iron for good sealing and durability. SBT backs these pistons with a lifetime warranty against defects—pretty rare in the jet ski world. You'll need to select the correct size (standard, .25mm over, etc.) based on your cylinder bore measurements. Whether you're doing a top-end refresh or a full rebuild, these pistons are a reliable, affordable choice for getting your old Sea-Doo back on the water. Always follow proper break-in procedures after installation.