Description
Machined from high-end aluminum, Promax 4-bolt 104 BCD chainrings are designed to handle the torque and stress of modern BMX racing and are fully capable in other single speed applications.
- CNC Machined from high grade 6061-T6 series aluminum for high strength while providing weight savings
- Designed to be used with most cranksets and spiders that utilize a 4-bolt 104 BCD chainring
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