KHS T-Rex 7 24 Youth Mountain Bike – Brand New 24-inch Kids BMX Blue

Mountain Bike Build Kit for Young Adventurers

Designed to ignite confidence and adventure in young riders, this 24-inch mountain bike build kit combines rugged durability with beginner-friendly performance. Perfect for kids between 4’2″ and 4’8″, it’s engineered to tackle rough terrain while offering a smooth transition into cycling. The frame is constructed using TIG-welded high-tensile steel—a premium choice that ensures exceptional strength and longevity compared to standard materials—making it ideal for daily use or weekend trails.

For off-road stability, the rigid straight-leg fork provides a solid foundation, absorbing shocks without added bulk. The drivetrain features a reliable Shimano Tourney RD-TY300D rear derailleur paired with a 7-speed freewheel (14-34T), enabling effortless gear shifts whether climbing hills or cruising on flat paths. A KMC Z8.3 chain ensures seamless power transfer, while the aluminum triple crankset (36T) with double guards adds protection against debris and wear.

Safety comes first with this kit’s all-aluminum linear pull brake system—responsive and fade-resistant even during prolonged rides—and matching brake levers offer intuitive control. The threadless 1-1/8” headset and 60mm stem provide secure steering adjustments, while the 600mm aluminum handlebar with 30mm rise gives a comfortable grip position tailored for smaller riders.

Comfort meets practicality: The Ultracycle Junior saddle is designed for all-day rides, and the micro-adjust seatpost (25.4mm) allows precise height customization as your child grows. Both front and rear wheels are built with lightweight aluminum rims and 32 spokes for added strength, paired with knobby 24×2.10” tires that grip loose surfaces like dirt or gravel effortlessly.

Why Choose This Kit?
| Feature | Our Build Kit | Competitor A | Competitor B |
|———————-|———————————|—————————|—————————|
| Frame Material | TIG-welded high-tensile steel | Low-grade steel | Aluminum (less durable) |
| Fork Type | Rigid straight-leg aluminum | Suspension fork | Plastic fork |
| Brake System | Aluminum linear pull brakes | Rim brakes | Plastic linear brakes |
| Gear Shifting | Shimano Revo Grip Shift | Basic twist shift | No gears |

Perfect for parks, forest paths, or backyard trails, this kit prioritizes reliability over compromise. Its lightweight yet sturdy aluminum components reduce fatigue during long rides, while Shimano’s proven technology ensures consistent performance in varied conditions. Whether your child is mastering their first trail or exploring with friends, this build kit delivers a balance of affordability and quality—without sacrificing safety or fun.

Note: Sizing guidelines are approximate (24″ fits 4’2″–4’8″). Always verify fit before assembly to ensure optimal comfort and control.