
40BS21 1" Finished Bore Sprocket Dimensions:

- Sprocket Size: 40BS21
- Outside Diameter: 3.620"
- Hub Type: B
- Bore Size: 1"
- Keyway Size: 1/4" X 1/8"
- Hub Diameter: 2-3/4"
- Length Through Bore: 1"
- Weight: 1.73 LBS
- Common Interchanges: 40BS21H, H40BS21, 40BS21-FB
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Feature
- Premium Quality Sprocket
- Finished Bore Sprocket
- Fully Meets ANSI Standards
- Black Oxide Coated
- Ultra High Performance
- Extremely Durable

- Sprocket Size: 40BS21
- Outside Diameter: 3.620"
- Hub Type: B
- Bore Size: 1"
- Keyway Size: 1/4" X 1/8"
- Hub Diameter: 2-3/4"
- Length Through Bore: 1"
- Weight: 1.73 LBS
- Common Interchanges: 40BS21H, H40BS21, 40BS21-FB