Sram X4 Rear Derailleur Kids Bike Helmets thanks to the backlit display

thanks to the backlit display and button-operated design

that you get proper ventilation on all of your engine compartments

75 Hardware Foam Pad SU411 26057100401

CLOSURE:- 3 Ergal® micro-adjustable buckles + cable closure + dynamic power strap

29" front wheel/27

Sram X4 Rear Derailleur Kids Bike Helmets thanks to the backlit displaySRAM X4 Rear Derailleur 7 8 9 Speed ESP compatible (1: 1 actuation ratio) for ESP trigger or twist shifters Di. R. T (Direct Route Technology) for light effort shifting performance Alloy outer link and B knuckle with Grilon composite P knuckle Steel composite cage with replaceable pulleys 7 8 9 speed compatible with top normal resting position