TrailMaster TM31 250cc Dirt Bike - 5-Speed Manual, Dual Disc Brakes
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TrailMaster TM31 250cc Dirt Bike - 5-Speed Manual, Dual Disc Brakes
Description
The TrailMaster TM31 is a full-motocross-spec 250cc dirt bike built for riders who want real off-road performance without compromise. Powered by a high-output 223cc single-cylinder, 4-stroke, air-cooled engine producing 16 horsepower, this machine is engineered to tackle virtually any terrain with confidence. The 19" front and 16" rear wheel setup, paired with an inverted hydraulic front fork and a rear spring shock, delivers race-inspired handling that feels natural and responsive on the trail.
With a 5-speed manual transmission, dual disc brakes front and rear, and a top speed of approximately 56 mph, the TM31 is suited for intermediate to advanced riders looking for a capable, no-frills off-road machine. A lightweight steel tube frame keeps the bike agile, while the Electric Start with kick backup means you're never stranded. Whether you're carving through singletrack or pushing the limits on open terrain, the TM31 delivers the kind of reliable, hard-hitting performance serious riders demand.
Key Features
- 223cc 4-Stroke Air-Cooled Engine: Single-cylinder ZSCB250D-G engine with 16 hp and 17.5 N.m torque for strong, consistent power across all terrain.
- 5-Speed Manual Transmission: Wet multi-plate clutch with 1-N-2-3-4-5 gearing pattern gives riders full control over power delivery in any riding condition.
- Electric Start with Kick Backup: Digital CDI ignition system provides effortless starting - electric or kick - keeping you on the trail and off the sidelines.
- Dual Disc Brakes: 240mm front dual-piston caliper and 240mm rear single-piston caliper deliver confident, precise stopping power in all conditions.
- Inverted Front Fork: 51x54-830mm hydraulic inverted forks with 150mm of travel absorb big hits and maintain control on rough terrain.
- 19"/16" Wheel Setup: Aluminum rim wheels with gravity cast hubs and motocross-specific tires (70/100-19 front, 90/100-16 rear) for aggressive off-road traction.
- Tapered Aluminum Handlebar: #6061 aluminum taper bar provides strength, flex, and vibration dampening for better rider comfort and control.
- Top Speed ~56 mph: The 223cc engine and #520 chain drive (13T/47T sprocket) push the bike to a capable top speed for trail and open-course riding.
- Lightweight Steel Tube Frame: High-strength steel frame and 560mm steel swingarm balance durability with a manageable 231 lb net weight.
- 34.6" Seat Height: Designed for taller, more experienced riders with a comfortable yet performance-oriented riding position and 13" of ground clearance.
Shipping
This product requires additional shipping. If you'd like a quote before you purchase, fill out the form on this page or email us at service@omahasportsandgames.com for a delivery ETA or to confirm shipping details.
What's Included
- TrailMaster TM31 250cc Dirt Bike
Why You'll Love It
The TM31 punches well above its price point, delivering motocross-caliber hardware - inverted forks, dual disc brakes, and a race-spec wheel setup - that you'd expect from bikes costing significantly more. TrailMaster has built a reputation for producing dependable, performance-focused off-road machines, and the TM31 is a standout example of that commitment. The dual-mode starting system means reliability is built in, so you can focus on the ride instead of worrying about the machine. With full ergonomics designed around serious motocross geometry, this bike rewards skilled riders who want a genuine connection to the trail. It's the kind of dirt bike that holds up through hard seasons of riding and keeps delivering, whether you're a weekend warrior or putting in regular hours on the trail.
Product Specifications
View Product Specs
| Engine Type | ZSCB250D-G, Single Cylinder, 4-Stroke, Air Cooled |
|---|---|
| Displacement | 223 cc |
| Max Power | 16 hp |
| Max Torque | 17.5/5500 N.m/r/min |
| Compression Ratio | 9.3~9.9:1 |
| Shift Type | Manual Wet Multi-Plate, 1-N-2-3-4-5, 5-Gears |
| Bore and Stroke | 65.5 x 62.2 mm |
| Min. Fuel Consumption | 354 g/Kw.h |
| Start Type | Electric & Kick Start |
| Carburetor | PE28 |
| Ignition | Digital CDI |
| Transmission | #520 Chain, FT: 13T / RR: 47T Sprocket |
| Front Fork | 51x54-830mm Inverted Hydraulic Forks, 150mm Travel |
| Rear Shock | 450mm Spring Pre-load Non-Adjustable Shock |
| Front Wheel | Aluminum Rim, Gravity Cast Hub, 1.6 x 19 |
| Rear Wheel | Aluminum Rim, Gravity Cast Hub, 2.15 x 16 |
| Front Tires | 70/100-19 |
| Rear Tires | 90/100-16 |
| Front Brake | Dual Piston Caliper, 240mm Disc |
| Rear Brake | Single Piston Caliper, 240mm Disc |
| Frame | Lightweight Steel Tube Frame |
| Swingarm | High Strength Steel, L=560mm |
| Handlebar | Tapered Aluminum #6061 |
| Overall Size | 78" x 32" x 45.7" |
| Wheelbase | 53.1" |
| Seat Height | 34.6" |
| Ground Clearance | 13" |
| Fuel Capacity | 2 Gal. |
| Net Weight | 231 lbs |
| Gross Weight | 297 lbs |
| Packing Size | 67.3" x 17.5" x 34" |
Manuals & Guides
FAQ
Is the TM31 street legal?
The TrailMaster TM31 is designed for off-road use only and is not street legal in most jurisdictions. It is intended for use on private property, closed courses, and designated off-road trails. Always check your local laws and regulations before riding.
What age or experience level is this bike best suited for?
The TM31 is best suited for intermediate to advanced riders due to its 5-speed manual transmission, 34.6" seat height, and top speed of approximately 56 mph. It is not recommended for beginners or younger children. A full-face helmet and appropriate protective gear are strongly advised.
Does the TM31 require assembly out of the box?
Like most powersports vehicles, the TM31 will arrive partially assembled and will require some final assembly, such as attaching the handlebars, mirrors, and other components. A basic set of hand tools is typically sufficient. We recommend having it inspected by a qualified technician before first ride.
How is the bike shipped?
The TM31 ships freight on a pallet due to its size and weight. Delivery is typically curbside, meaning the freight carrier will bring it to your driveway or curb but not inside your home or garage. Contact us at service@omahasportsandgames.com for a shipping quote or estimated delivery timeline before placing your order.
What fuel does the TM31 use?
The TM31 runs on standard unleaded gasoline. Its 2-gallon fuel tank provides a reasonable riding range for off-road sessions. Always use fresh, clean fuel and follow the manufacturer's recommendations in the product brochure for proper maintenance.
Is a warranty included with the TM31?
Warranty details are outlined in the product brochure available for download on this page. For specific warranty coverage questions, please contact us at service@omahasportsandgames.com and we'll be happy to assist.
| Specification name | Specification Value |
|---|---|
| Fuel supply | Gasoline |
| Item condition | New |
| Transmission type | Manual |