The BALANCE-TEC™ Conversion Kit allows BALANCE-TEC™ equipped Prevelo bikes to be converted to balance bike mode. Includes: 2 x bottom bracket shields / foot pegs 2 x bottom bracket shield mounting bolts 2 x bottom backet shield anti-rotation bolts This is only compatible with BALANCE-TEC™ equipped Prevelo Bikes. That includes Zulu One MKII, Zulu Two MKII, Alpha One MKIII, and Alpha Two MKIII. Look for this logo on your frame to ensure compatibility: