Promax 4-Bolt Chainring - 42t 104 BCD Black MFPN=ST21-0BA88S48-BK 8mm Clamp Diameter Black

8mm Clamp Diameter Black

The innovative design of the outer chainring ensures faster quieter shifts thanks to the contoured pin and the symmetrical design of the inner chainring teeth provide improved stability with chain crossovers

Rubberised strapping provides extra grip to the frame and webbing straps with easy-to-use cam locking buckles keep the bag sitting securely and free of movement while riding

T-Handle shape for high and low torque functions

37 BB/Frame Interface English BB Shell Width (mm) 68 BB Shell Width (mm) 73 Spindle Interface Type RaceFace/Easton CINCH Spindle Interface Type 386 EVO Spindle Interface Type Rotor 3D+ Spindle Interface Type e*Thirteen P3 Connect Spindle Interface Type Zipp Vuma Defined Color Black

Promax 4-Bolt Chainring - 42t 104 BCD Black MFPN=ST21-0BA88S48-BK 8mm Clamp Diameter BlackPromax 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