Up for sale is JT 2007-2022 RM-Z250 Suzuki REAR SPROCKET STEEL 47T-520 KAW/SUZ JTR808.47SC. The vendor part number is JTR808.47SC. Please read the title to know what is for sale. Catalog Description� TOP QUALITY AT ECONOMICAL PRICES Made exclusively from the finest Japanese 545C high carbon steel Heat treated and hand finished to meet or exceed O.E.M. standards Outlasts any mild steel or surface hardened sprocket as much as two or three times over .