• Crankarm length 115 mm and 130 mm
• 115 mm: age 5 - 8
• 130 mm: age 7 - 12
• Square taper jis interface
• Chainring size 30t
• Chainline 42 mm

The elegant black ACID ROOKIE 30T crankset is perfectly optimised for our youngest riders. The ROOKIE 30T for 30T chainrings comes in 115 mm and 130 mm crank arm lengths. The 115 mm is suitable for children aged five to eight years, the 130 mm is suitable for children aged seven to twelve years.