These Jack’D Bike Mods BMX peg adapters are aftermarket rear axle adapters that allow standard 14mm BMX-style pegs to be installed on select JackRabbit electric bikes. Designed as direct replacement axle nuts, they convert the stock 12 x 1.25mm rear axle threads to 14 x 1mm. They are compatible with the OG2, OG2 Pro, XG, XG Pro, and MG, but do not fit the OG or any front axle.