The Ultimate Kids Mountain Bikes....Now Finally Sized for Your Lil' Riders Comfort The Front Suspension forks, Wide MTB Tires and Comfy cushioned saddle- now that is comfort. Safety Front and Rear V Brakes provide great braking. Strength The precision welded Aluminum frame is Light, Strong and Durable. Gravity Nugget 24 The Ultimate Kids Mountain Bikes....Now Finally Sized for Your Lil' Riders The best things about the Gravity Nugget Kids Mountain Bikes are comfort, convenience, safety and strength. Comfort The Front Suspension forks, Wide MTB Tires and Comfy cushioned saddle- now that is comfort. Convenience The free rear mounted kickstand means easy parking. Features Shimano 1X drivetrain for single lever shifting, similar to top of the line Mountain bikes. Safety Front and Rear V Brakes provide great braking. Strength The precision welded Aluminum frame is Light, Strong and Durable. Amazing mini mountain bikes with the quality of the more expensive bike shop bikes on the market. Quality kids mountain bikes in shops are pretty pricey and now YOU can have the best on the market. Priced about half as much as the 'bad guys' (everyone except bikesdirect.com) are selling their kids mountain bikes for. Two Sizes Sized - In traditional boys frames with high top bar or girls frames with step-through/lower top bar. a 24 inch wheel size For MOST KIDS 8 TO 12. *You know your child best; level of skill and size compared to their class mates. Most kids 13 and up can generally ride small adult bikes, The final choice is up to you. Technical Specifications Frame Custom Formed TIG Welded 6061 Aluminum Front Triangle. Aluminum Rear Triangle with replaceable rear derailleur hanger and guard Fork / Headset GRAVITY SUSPENSION FORK, ALLOY BLACK CROWN/ VP-A71 BLACK W/M-1D ALLOY BLACK CAP Handlebars HL MTB-AL W:550MMxR:20MMx6 DEGREES, ALLOY BLACK Brakes CS V-Brakes Aluminum Alloy / POWER Aluminum Alloy Levers Wheels / Hubs Gravity Alloy Single Wall Aluminum Rims with Steel Spoke by Formula, Ball Bearing with QR Front Axle, Rear Crank/ Derailleur / Shifter HDL MTB with Chainring and ChainGuide / SQUARE Taper / SHIMANO SIS Shifter and SHIMANO TOURNEY Rear Derailleur Saddle MTB Saddle with Deluxe Comfy padding Tires NJK MTB BlackWall Pedals Mountain Platform, 9/16 inch axle How to Size Your Bike 24 inch wheel size For MOST KIDS 8 TO 12 Boys 24in Standover/Top of TT=21.75", Top of Seat at lowest position = 27.5") Girls 24in Standover/Top of TT =19", Top of Seat at lowest position = 26.5") 20 inch wheel size For MOST KIDS 5 TO 8 (Top of Seat at lowest position= 25") Boys 20in Standover/Top of TT= 20" Girls 20in Standover/Top of TT= 17.25" You know your child best; level of skill and size compared to their class mates. Most kids 13 and up can generally ride small adult bikes, The final choice is up to you.