Kids' Mountain Bike · 20" or 24" Built to get kids hooked on mountain biking. The Bayview Trail packs a lightweight Series 1 aluminum frame, a real suspension fork (50mm travel on 24"), and disc brakes — hitting that rare kids' bike trifecta of durability, real performance, and fun graphics that hold up for years of neighborhood shredding and bike-park adventures. Short-reach brake levers and kid-specific components mean it's scaled for small hands and small riders. 20" for smaller kids, 24" for bigger ones. At a Glance Rear Derailleur: Shimano Altus/Tourney, 7-Speed Brakes: Power CX7 / Tektro MDM280 Mechanical Disc, 160mm rotors Full Specifications Frame (24") Series 1 6061 Aluminum, 24" Wheels, IS Seatstay Disc Mount, 135mm Dropouts Fork (24") SR Suntour XCT Jr 24", Coil Spring, 50mm Travel Fork (20") Steel Rigid Fork, 100mm Spacing, QR Lever Rear Derailleur Shimano Altus/Tourney, 7-Speed Shifter Shimano Revo Twist 1x7 Crankset (24") Forged Alloy, 30T, 152mm, Ring Guard Crankset (20") Forged Alloy, 36T, 140mm, Ring Guard Cassette Shimano HG-20 7-Speed, 12-32T (or SunRace 11-32T) Brakes Power CX7 / Tektro MDM280 Mechanical Disc, 160mm rotors Tires (24") Vee Tire Crown Gem 24" x 2.25" Tires (20") Multi-surface 20" x 2.125" Kid-specific Short-reach brake levers, narrow grips, kid-size saddle, short crank arms