Up for sale is SUNSTAR 1988-1989 Trail Boss 250 2X4 Polaris REAR SPROCKET STEEL 30T. The vendor part number is 2-334130. Please read the title to know what is for sale Manufactured using only the highest quality 1045 high-carbon steel and most are heat treated for added strength and wear resistance Computer designed weight reduction holes are included where possible Most are zinc plated and some have a baked-on durable paint process for corrosion resistance