Promax 4-bolt Chainring 104mm

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
4 bolts mount BCD diameter 104mm
Thickness: 5mm
Chain width: 3/32"