- Crankarm length 84 mm and 105 mm
- 84 mm: age 2 - 4
- 105 mm: age 4 - 6
- Square taper jis interface
- Chainring size 25t
- Chainline 42 mm
The elegant black ACID ROOKIE 25T crankset is perfectly optimised for our youngest riders. The ROOKIE 25T for 25T chainrings comes in 84 mm and 105 mm crank arm lengths. The 84 mm is suitable for children aged two to four years, the 105 mm is suitable for children aged four to six years.