Product Description
TrailMaster TM23-125 Youth Dirt Bike – 125cc, Semi-Automatic, Electric & Kick Start
The TrailMaster TM23-125 is the next step up for kids who have outgrown the tiny bikes and are ready for a real mid-size dirt bike. With a 125cc 4-stroke engine, 4-speed semi-automatic (no clutch) transmission, and both electric and kick start, the TM23 gives young riders the power and confidence they need to ride trails, fields, and backyard tracks.
Designed for riders in the 8–13 year old range (depending on height and experience), the TM23 bridges the gap between small beginner bikes and full-size motocross machines. A 29" seat height, lightweight chassis, and race-inspired suspension give it a planted, predictable feel that kids and parents love.
Why Choose the TrailMaster TM23 for Your Young Rider?
- 125cc 4-stroke power – smooth, reliable, and easy to live with.
- Semi-automatic 4-speed – no hand clutch, so kids can focus on balance and throttle control.
- Electric & kick start – push-button convenience with kick backup.
- Mid-size chassis – 29" seat height with 14"/12" wheels for growing riders.
- Front & rear hydraulic disc brakes – strong, confident stopping power.
- Race-inspired suspension – inverted front fork and long-travel rear shock.
- Lightweight 161 lb curb weight – easy for kids to handle and load.
- Multiple color options – typically available in red, blue, green, and orange.
Whether your family rides on a few acres, a small backyard track, or open country trails, the TM23 is built to handle real off-road terrain while still being manageable for confident beginners and intermediate youth riders.
TrailMaster TM23-125 Technical Specs
Below are the core factory specifications for the TM23-125 youth dirt bike:
- Engine Type: ZM125cc air-cooled, 4-stroke single
- Power Output: approx. 8.3 HP
- Starting System: Electric & kick start
- Transmission: 4-speed semi-automatic (no hand clutch)
- Front Suspension: ø33 x 650 mm telescopic / inverted-style fork
- Rear Suspension: 270 mm mono shock
- Front Brake: Hydraulic single-piston caliper, 220 mm disc
- Rear Brake: Hydraulic single-piston caliper, 190 mm disc
- Front Tire: 60/100-14
- Rear Tire: 80/100-12
- Wheelbase: 41.54"
- Seat Height: 29.13"
- Ground Clearance: 10.63"
- Fuel Capacity: 0.92 gal (3.5 L)
- Curb Weight: 161 lbs
- Colors: Red, blue, green, orange (availability may vary)
These mid-size proportions make the TM23 a great fit for riders who are too tall for 110cc minis but not quite ready for a full-size 17"/14" or 19"/16" wheel setup.
Who Is the TM23-125 Best For?
The TM23 is ideal for:
- Kids moving up from 70–110cc play bikes.
- Riders in the ~4'4"–5'0" height range who want more suspension and power.
- Families who want a simple, carbureted, non-EFI dirt bike that’s easy to maintain.
- Backyard tracks, fields, dirt roads, and light trail riding.
- Parents looking for a Christmas or birthday gift that actually gets kids outside.
As always, proper safety gear is a must: off-road helmet, goggles, gloves, and boots designed for dirt riding.
Easy to Own, Simple to Maintain
One of the biggest advantages of the TM23 is how simple it is to service. Routine maintenance like oil changes, chain adjustments, and air filter cleaning can all be done at home with basic tools. That means more time riding and less time in the shop.
We recommend following the maintenance schedule in the owner’s manual and teaching young riders to help with basic checks—fuel, oil level, chain tension, and controls—before every ride.
The TrailMaster TM23 125cc youth dirt bike is one of the most reliable mid-size off-road motorcycles for kids ages 8–13. With a beginner-friendly semi-automatic transmission, electric start, and 14/12 off-road wheels, the TM23 gives young riders the confidence they need to progress from small beginner bikes to real trail riding. Parents love the TM23 for its low maintenance, predictable power, and durable suspension designed for backyards, fields, and small trail loops. If you’re searching for a kids dirt bike, youth motocross starter bike, or the best Christmas gift for outdoor families, the TM23 delivers unmatched value and performance in the 125cc class. GoKartMasters.com offers fast shipping, experienced support, and the trusted TrailMaster lineup your family can depend on.
