Description
Steel Front Sprocket
- Machined from impact and wear resistant chromoly steel
- Inner splines are broached to provide maximum spline-to-countershaft contact – this helps distribute driveline forces over the largest possible area
- Heat-treated, then finished with a nickel coating for corrosion resistance and lubricity
- Be sure to check for clearance when ordering sizes larger than stock.



![ProX Front Sprocket CR250 + CRF450R -15T [MPN: 07.FS13088-15]](https://www.partskeystone.com/wp-content/uploads/2026/03/prox-front-sprocket-cr250-crf450r-15t-mpn-07-fs13088-15-vteuurjk33423.webp)

![JT Sprockets Sprocket 40-Tooth [MPN: JTR816.40]](https://www.partskeystone.com/wp-content/uploads/2026/03/jt-sprockets-sprocket-40-tooth-mpn-jtr816-40-rmnfpcap11089.webp)
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