⚠️ Fitment note: The Make/Model filter is for guidance only. Please verify model / year / engine size in the product description before purchase. The product description is the definitive fitment reference. If you’re unsure, message us and we’ll confirm fitment. Part No. SF036-14.FIR FRONT SPROCKET, MUD GROOVED & LIGHT [Factory Image Brand] HONDA CR125R 2004-2007, CRF250R 2004-2017, CRF250X 2004-2017, FIR front sprockets are the perfect fit together with the drive chains. The front sprockets are grooved and ultra- light and are the top level quality sprockets. Manufactured from low corrosion SCM440 Ni-Chrome Molybdenum steel, featuring a low carbon core to prevent breaking while the case hardened surface offers maximum wear resistance. Precision CNC machining ensure a perfect fit and the lightweight design including lightening holes offer ultimate performance. The sprockets also come with self-cleaning dirt grooves to extend chain and sprocket life to the max. Cross reference numbers ONLY. 439-520-14, 43952014, JTF132314, 07.FS12004-14