TrailMaster MK125 Dirt Bike 4-Speed Manual Dual Disc Brakes, Electric Start (14/12), Ages 12 and up

       The TrailMaster MK125 is a premium mid-size dirt bike designed for riders who want a stronger, more performance-focused machine while still keeping it beginner-friendly. Powered by a reliable 125cc air-cooled 4-stroke engine, the MK125 delivers solid power, smooth acceleration, and dependable off-road capability.

         Equipped with a 4-speed manual transmission, electric start, and dual hydraulic disc brakes, the MK125 gives riders full control and a more authentic dirt bike experience. Its upgraded suspension, inverted front fork system, and larger 14-inch front /12-inch rear wheels provide improved stability, handling, and comfort on rough terrain. Built for riders ages 12 and up, it’s a strong step into real off-road riding.

Performance Specs:

Engine

• 125cc Single-Cylinder, 4-Stroke, Air-Cooled Engine (Zongshen-based balanced shaft engine)
• 123cc Displacement
• 4-Speed Manual Transmission
• Manual Clutch Operation
• Electric Start + Kick Start Backup
• CDI Ignition System
• Chain Drive System
• Maximum Power: ~6.3 HP
• Maximum Torque: 8.8 N·m @ 5500 RPM
• Compression Ratio: 9.0:1
• Fuel Efficiency: ~≤367 g/kW·h

Fuel System

• Fuel Capacity: 0.92 Gallons
• Carbureted Fuel System
• EPA-Compliant 4-Stroke Setup
• Recommended Oil: 10W-40

Suspension

• Front: Inverted Hydraulic Forks (Race-Style Setup)
• Rear: Nitrogen Gas Mono Shock
• Aluminum Linkage System
• Designed for improved control and impact absorption

Braking System

• Front Hydraulic Disc Brake
• Rear Hydraulic Disc Brake
• High-performance dual disc braking system

Wheels & Tires

• Front Tire: 60/100-14
• Rear Tire: 80/100-12
• Alloy Wheels with Hub System
• Off-road knobby tire design for traction and grip

Dimensions

• Overall Size: 63 x 27 x 42 in
• Wheelbase: 31 in
• Seat Height: ~29.5 in
• Ground Clearance: ~10.2 in
• Compact mid-size frame design

Frame & Construction

• Reinforced Steel Frame
• Aluminum upper/lower linkage components
• Foldable alloy handle levers
• Performance muffler system
• Waterproof wiring harness

Weight

• Net Weight: ~149 lbs
• Gross Weight: ~213 lbs

Additional Features

• Electric Start System
• Kick Start Backup
• 4-Speed Manual Transmission (Clutch Equipped)
• Inverted Front Suspension for improved handling
• Lightweight mid-size chassis design
• Designed for trail, off-road, and recreational riding
• Available in Red, Blue, and Green
• Recommended Rider Age: 12+ Years

What's Included:

✔ TrailMaster MK125 Dirt Bike
✔ Electric Start Battery
✔ Kick Start System
✔ Tool Kit
✔ Owner’s Manual
✔ Assembly Hardware & Instructions