Box components Box Two BMX Chainring 42T MFPN=212170 this is their lightest performance-driven

this is their lightest performance-driven damper ever

5 Lock Style Keyed Diameter 11 Cable Included No Shackle Width 3

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Asymmetric spoke holes for more balanced spoke tensions

Box components Box Two BMX Chainring 42T MFPN=212170 this is their lightest performance-drivenMade in the USA from 6061 T6 aluminum alloy Box Two BMX Chainrings are round and true. They fit 104 BCD four bolt cranks and are available in black anodized with laser etched graphics from 38 to 45 teeth TECH SPECS Mount Compatibility 104mm 4 bolt Teeth 42T Type Material 6061AL Spec 3 32 Color Black Chain Compatiblity 1sp Tooth Type Standard Weight Offset