North Shore Billet DH 0127 Polygon Colossus - Derailleur Hanger Chainring BCD-64 Shimano Asymmetric parents can easily tune the

parents can easily tune the power of the bike based on their child’s individual riding abilities

gives you up to 5 hours of range

Works great for when full leg warmers or tights are too much

NOT Compatible with 1-Bike Add-on

These chainrings are designed for the Shimano FC-RS500 crankset

North Shore Billet DH 0127 Polygon Colossus - Derailleur Hanger Chainring BCD-64 Shimano Asymmetric parents can easily tune theNorth Shore Billet DH 0127 Polygon Colossus Derailleur Hanger. North Shore Billet Derailleur HangersAll hangers are CNC machined from 6061 T6 Aluminum for strength and stiffness beyond OEM hangers Protective anodized pewter finish Hardware not included