Power Transmission > Sprockets > Metric Roller Chain Sprockets > 12B Chain Sprockets
12B40 Sprocket With Stock Bore
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12B40 Sprocket Dimensions

- Sprocket Size: 12B40
- Tooth Count: 40
- Pitch Diameter: 242.80mm
- Stock Bore: 25mm
- Maximum Recommended Bore: 70mm
- Hub Diameter: 107mm
- Length Thru Bore (LTB): 40mm
- Sprocket Weight: 5.22 kg
- Sprocket Size: 12B40
- Tooth Count: 40
- Pitch Diameter: 242.80mm
- Stock Bore: 25mm
- Maximum Recommended Bore: 70mm
- Hub Diameter: 107mm
- Length Thru Bore (LTB): 40mm
- Sprocket Weight: 5.22 kg