Promax 4-Bolt Chainring Size:40 while smaller and thinner than

while smaller and thinner than a phone

Designed to work exclusively with the Shadow 3/32" Interlock chain

The FLAT bend bar is available in 2 other sizes as well

Below you can purchase an alternative color top cap to change the look of your ride

Coated stainless steel inner wire for smooth cable braking

Promax 4-Bolt Chainring Size:40 while smaller and thinner thanMachined 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