Promax 4-Bolt Chainring - 42t 104 BCD Black MFPN=ST0009 Ergonomic handle with intuitive switching

Ergonomic handle with intuitive switching between clockwise counterclockwise and neutral

Adjustable from 10mm to 50mm

Contains two replacement blades

2G Cassette Lockring Tool with 5mm Guide Pin

Provides a working temperature range of -40 to 248 degrees Fahrenheit

Promax 4-Bolt Chainring - 42t 104 BCD Black MFPN=ST0009 Ergonomic handle with intuitive switchingPromax 4 Bolt Chainring 42t 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