4in Rise: Bar riser kits increase bar height by 4" giving your taller kiddo a more comfortable riding position. Kit includes: STACYC branded tall bar, stem and longer brake cable. Note: Does NOT include the bike shown (sold separately). Note: Remember, maximum weight on a STACYC 12eDRIVE and 16eDRIVE is 75 pounds, these kits are NOT intended to create pit bikes for big kids or adults. 2.4in Rise: More Height. More Comfort. 19 mm Mini Bar Riser Kits increase bar height by 2.4" with the smaller diameter Mini Bar, giving your taller kiddo a more comfortable riding position and a better grip on the bars. This kit is only compatible with 12eDRIVE and 16eDRIVE bikes that are already equipped with the 19 mm handlebar / throttle assembly. Increases bar height by 2.4", giving taller kiddos a more comfortable riding position.