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- Color: Black
- Material: Aluminum
- Defined Color: Black
- Bore: 19mm
- Interface: Spline Drive
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Profile spline drive sprocket is CNC machined from 7075 Aluminum in the USA. Requires no sprocket bolt. Instead, it has a hardened chromoly steel insert in that matches up to the 48 splines on the crank axle for pure, direct power transfer. Color: Black. Material: Aluminum. Defined Color: Black. Bore: 19mm. Interface: Spline Drive. Adaptor: None. Tooth Count: 36. Chain Width: 1/8″.