A sprocket, or sprocket-wheel, is a profiled wheel with teeth or cogs that mesh with a chain, track, or other perforated or indented material. The name 'sprocket’ applies generally to any wheel upon which radial projections engage a chain passing over it. It is distinguished from a gear in that sprockets never mesh directly with each other.

| Type | Quality | Material | Size | OEM |
|---|---|---|---|---|
| Chain Sprocket Kit BM150 428H 128L 14T 42T | A class | Metal | Standard size | Accept |