TrailMaster TM24 125cc Dirt Bike 4-Speed Semi Auto (17/14), Ages 12 and up

     The TrailMaster TM24 is designed for older youth riders and beginners seeking a larger, more capable dirt bike. Powered by a dependable 125cc air-cooled 4-stroke engine and paired with a 4-speed semi-automatic transmission, the TM24 delivers smooth, reliable performance while helping riders develop shifting skills without the need for a manual clutch.

    Featuring oversized 17-inch front and 14-inch rear wheels, increased seat height, hydraulic disc brakes, and long-travel suspension, the TM24 offers improved stability, handling, and obstacle clearance for trail riding and off-road adventures. Built for riders ages 12 and up, it serves as an excellent entry-level dirt bike for teens and adults alike.

Performance Specs:

Engine

• 125cc Single-Cylinder, 4-Stroke, Air-Cooled Engine
• 123.7cc Displacement
• 4-Speed Semi-Automatic Transmission
• Automatic Clutch
• Electric Start System
• CDI Ignition
• #420 Heavy-Duty Chain Drive
• Maximum Power: 8.3 HP
• Maximum Torque: 8.8 N·m @ 6,000 RPM
• Compression Ratio: 9.0:1
• Bore x Stroke: 54mm x 54mm
• Top Speed: Up to 45 MPH

Fuel System

• Fuel Capacity: 1.03 Gallons (3.9 Liters)
• EPA-Compliant Exhaust System
• Recommended Engine Oil: 5W-30

Suspension

• Front Hydraulic Telescopic Forks
• Rear Mono-Shock Suspension
• Long-Travel Suspension Design
• Built for Trail Riding and Off-Road Terrain

Braking System

• Front Hydraulic Disc Brake
• Rear Hydraulic Disc Brake
• Dual Disc Brake Configuration
• Responsive Stopping Power for Improved Control

Wheels & Tires

• Front Tire: 70/100-17 Knobby Off-Road Tire
• Rear Tire: 90/100-14 Knobby Off-Road Tire
• 17-Inch Front Wheel
• 14-Inch Rear Wheel
• Aggressive Off-Road Tread Pattern
• Heavy-Duty Steel Wheels

Dimensions

• Overall Length: 71.7 Inches
• Overall Width: 31.1 Inches
• Overall Height: 44.1 Inches
• Wheelbase: 48.8 Inches
• Seat Height: 33.1 Inches
• Ground Clearance: 12.2 Inches

Frame & Construction

• Heavy-Duty Steel Tube Frame
• Reinforced Off-Road Chassis
• Durable Steel Swingarm
• Built for Recreational and Trail Riding

Weight

• Net Weight: 161lbs
• Gross Shipping Weight: 183lbs

Additional Features

• Electric Start System
• 4-Speed Semi-Automatic Transmission
• No Manual Clutch Required
• Hydraulic Front & Rear Disc Brakes
• Large 17"/14" Wheel Combination
• Increased Ground Clearance and Stability
• Ideal for Teen and Adult Riders
• Available in Blue, Red, Green, and Orange
• Recommended Rider Age: 12+ Years

What's Included

✔ TrailMaster TM24 Dirt Bike
✔ Electric Start Battery
✔ Tool Kit
✔ Owner's Manual
✔ Assembly Hardware & Instructions

Why Choose the TM24?

• Largest wheel setup in the TrailMaster youth lineup
• Higher seat height for taller riders
• Better trail performance and obstacle clearance
• Powerful and reliable 125cc engine
• Semi-automatic transmission helps riders build confidence before moving to a manual clutch bike
• Excellent choice for teens and adults looking for a capable entry-level dirt bike that is easy to ride and maintain