
| Hub Diameter | 4-1/4 in |
| Length Through Bore | 1-3/4 in |
| Chain Size | #80 |
| Material | Steel |
| MPN | 80BTB23H 2517 |
| Brand | Martin |
| Unit Type | Unit |
| Bushing Type | 2517 Taper Lock |
| Model | 80BTB23H 2517 |
| Pitch Diameter | 7.344 in |
| Outside Diameter | 7.876 in |
| Country/Region Of Manufacture | United States |
| UPC | 697950043623 |
A nice touch is the heavy-gauge steel used throughout the entire frame.