Experience the best of kids mountain biking with the DCB JK20 Junior Kids Trailcraft Blue Skyu 20 Style Carbon Mountain Bike Frame. The mountain bike frame, where weight truly matters! Light, playful, and manageable for your young shredder from 3'11" (120cm) to 4'4" (130cm) With clean internal cable routing, forged dropouts, and post-mount disc brake mounts, the JK20 offers a smooth, controlled, and nimble ride! Product specs: Material: 100% High-Quality Toray T800 Carbon Fiber. Wheel-size: 20 (up to 2.25 tire) Bottom Bracket: BSA (68) Front travel: Rigid or 80-100mm Weight: 1000g Finish: Matte UD Brakes: 160mm disc Head-tube: 1-1/8 1-1/2 - IS 42/52 (Headset included) Seat-post Size: 31.6 Clamp size: 37mm Spacing: 9x135 QR Frames generally arrive in 15-30 days at your door. Custom paint can add 1-3 weeks to processing. For more details about shipment, see our Shipping and Returns page at the bottom of the site under Support.