This is a rare, genuine OEM Suzuki piston for the 1982-1985 RM250 model. The piston is of standard size and has the part number 12110-14301. It is perfect for Suzuki enthusiasts and collectors who want to restore or upgrade their bike's engine. The piston is designed to fit perfectly into the engine and provide reliable and efficient performance. It is made of high-quality materials and has been manufactured to meet the OEM specifications. This item is a great find for anyone looking for genuine Suzuki parts.BX12