Slide- woom4+5+6 CRANK (special page for modal) – woom USA EU Hungary Poland Romania Switzerland Taiwan USA Bikes & Accessories View Product View Product View Product View Product View Product View Product KIDS HELMET View Product bike light View Product Bottle View Product Lock View Product Cycling Gloves View Product Bell (included already with all woom bikes) View Product Personalized name sticker View Product T-Shirt View Product upCYCLE Membership View Product Training Set View Product Online Gift Card View Product SURFBOARD View Product Wooden Bike Stand View Product Balance Bike Carrier View Product Taking the lead! (children's book) View Product FREEWHEEL KIT View Product See all our bikes and accessories Let's ride About us News We are woom Jobs Service FAQ Returns / warranty Shipping / payment Assembly instructions Newsletter Contact us USA EU Hungary Poland Romania Switzerland Taiwan USA The woom Crank We develop smart standards The length and spacing of our crank are adapted for a growing child's body. With an optimal Q-factor, our crank provides multiple benefits. Ergonomic length ensures a perfect fit (B) Low, child-friendly Q-factor ('Q-Faktor'): horizontal leg spacing suitable for the pelvic width: 141 mm (5.6 inches). Crafted with super-light aluminum Integrated chain ring Chain-protection ring prevents pinching and protects the pants The length of the crank fits the length of the legs.