Promax 4-Bolt Chainring - 44t 104 BCD Black 58 Valve locknut with o-ring seal

Valve locknut with o-ring seal and valve cap are included

Replaceable hood cover and face plate

}Zipp Bearing Kit - Super 9 Disc Brake 6803/61803 Qty 1 6903/61903 Qty 1

+/-3% accuracy means youll always know your true watts output

Stem Angle (deg) +7 Stem Angle (deg) -7 Length 50 Bar Clamp Diameter (mm) 31

Promax 4-Bolt Chainring - 44t 104 BCD Black 58 Valve locknut with o-ring sealPromax 4 Bolt Chainring 44t 104 BCD Black. 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 TECH SPECS Color Black Ring