Promax 4-Bolt Chainring Size:40 Coated stainless steel inner wire

Coated stainless steel inner wire for smooth cable braking

this disc brake caliper is all you need to improve control

while smaller and thinner than a phone

minimizing rear triangle deflection

DST (Durable Stretch Technology) constructed of four-way HEX-Stretch fabric provides excellent mobility with heavy-duty durability

Promax 4-Bolt Chainring Size:40 Coated stainless steel inner wireMachined 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