Features of the Kona Kids' Makena 11 Much of our 7005/6061 tubing is butted and/or formed, meaning the tubing?s wall thickness can be increased or decreased, as well as shaped, so we can fine-tune a particular frame?s strength and ride characteristics depending on its intended application Bearing cups Are actually pressed into the frame and Are easily removable. An internal headset also reduces stack height, so the height of the stem and bars Are more adjustable, giving the rider the best Fit possible. Register a new Kona bike within three months of purchase, and the original owner qualifies the Kona frame for a free Lifetime Warranty. Frame Material Kona 6061 Aluminum Butted Size 11 in. Fork Kona Project Two JR Crankarms Samox Chainrings 28t/Guard B/B Shimano 68mm Pedals FPD Platform Chain KMC HV500 Cassette Shimano 14-34t 7spd R/D Shimano Tourney SS Shifters Shimano Revo Shift Brake Calipers Tektro V-Brake Brake Levers Tektro Junior Headset Feimin FP-H863B Handlebar Kona Riser Stem Kona Control Seatpost Kona Thumb 27.2mm Seat Clamp Kona QR Grips Velo Junior Saddle Velo Junior Front Hub Formula 140x100mm nutted axle Rear Hub Formula 175x130mm nutted axle Spokes Stainless 14g Rims Double Wall alloy Front Tire Vee Tire Crown Gem 20x2.6in. Rear Tire Vee Tire Crown Gem 20x2.6in.