Used but PLENTY of life. Came off a 2022 YZ250F. ***Over $120.00 Retail Your cost $79.00 – These things last way more than any other sprocket I’ve ever used, even in the sand/harsh tracks down here in Florida!! From Dirt Tricks: The Dirt Tricks Rear Sprocket was designed and patented by Dirt Tricks president and engineer Greg Burns in 2002, using his knowledge of aerospace steels, heat treatments, as well as FEA stress analysis. Being an expert desert racer, ** Greg became tired of changing aluminum sprockets every two months. His goal was to create a sprocket that would last an entire season of hard riding, yet be comparable in weight to aluminum. Thus, the Dirt Tricks Sprocket was born. It required two years of development and testing, but the end result has proven to be the toughest, most durable off-road sprocket available** Dirt Trick’s Chrome Rear Sprockets are 2.5 times stronger than stainless steel and use a unique "minimalist" design and appearance. Specs: • Made of chromoly steel. • Unique minimalist design and appearance. • Machined to the tightest industry standards and tolerances. Fitment according to ChatGPT **DO YOUR OWN RESEARCH TO VERIFY BEFORE PURCHASING- NO RETURNS!** WR250F 2001-2013, 2015-2024 WR426F 2001-2002 WR450F 2003-2025 YZ125 1999-2025 YZ250 2-Stroke 1999-2025 YZ250F 4-Stroke 2001-2025 YZ250FX 4-Stroke 2015-2024 YZ250X 2-Stroke 2016-2025 YZ400F 1999 YZ426F 2000-2002 YZ450F 2003-2025 YZ450FX 2016-2025