The TrailMaster TM31 Pro 250: Who Should Buy It, and Who Shouldn't
- on November 05, 2026
- Categories: Articles
The TM31 Pro 250 has the lowest rating of the big TrailMasters we sell. The most useful sentence in its reviews is a review title: “Great once you jet it.” Here is what that means, who the bike is right for, and who should spend the money elsewhere.
The verdict, up front
Buy the TrailMaster TM31 Pro 250 if seat height is what decides it for you. It is a full-size, five-speed, clutch-and-gears 223cc bike with a 34-inch seat in its title, and it is the lowest seat of the three bikes in this piece. If you can stand over a 37-inch seat comfortably, buy the TM33-250 instead for $120 more. If you want more equipment for less money, look hard at the T5, which is $60 cheaper.
That is the whole argument. The rest is why, and who should ignore it.
Three bikes, one engine size
| Bike | Price | Engine | Seat (from title) | Rating | Reviews |
|---|---|---|---|---|---|
| TM31 Pro 250 | $1,649 | 223cc | 34 in | 4.14 | 7 |
| T5 Dual Sport | $1,589 | 223cc | 35 in | 5.0 | 2 |
| TM33-250 | $1,769 | 223cc | 37 in | 5.0 | 7 |
Prices are current listing prices. Seat heights are the figures in each product title.
Same displacement, same five-speed manual, electric and kick start on all three. You are not choosing between engines. You are choosing between a seat, an equipment list and how much evidence is behind the rating.
What the TM31 owners actually say
Seven reviews. Mostly positive, with one owner calling it “higher quality than expected” and another saying the warranty was “definitely worth it and needed.” The complaint that matters is the carburetor. One owner found it “super lean” and re-jetted it; another said it bogs down until the idle is adjusted, and that the adjuster sits close to the frame where it is hard to reach.
Here is the detail that only shows up once someone has actually owned one. The same owner who re-jetted the carb reports that the oil drain shown in the manual is not on the bike. Oil comes out at the spot where a Honda CRF230 would have its oil filter, behind a fine screen, and the air filter needs oiling too. None of that has to be a deal-breaker. All of it is an evening of attention that the box does not mention.
Now the honest part. A TM33 reviewer reports the same lean-running carb. So this is a trait of the engine family, not a flaw unique to the TM31. And with only seven reviews on each bike, one unhappy buyer moves the average a long way. Read 4.14 against 5.0 as a nudge, not a ruling. If you are curious how this engine class suits a first-timer, we wrote that up in Is a 250cc Dirt Bike Good for Beginners?
Where it loses to the T5
The T5 costs less. Its own listing describes a digital dashboard, turn signals and mirrors, none of which the TM31 lists; the TM31 lists a headlight and little else. The seat is an inch taller on paper. That is a better equipment list for $60 less.
What the TM31 has that the T5 does not is a track record. The T5 has two reviews, both five stars. That is a promising start, and it is not seven owners. If the extra equipment matters to you, the T5 is the better buy today. If you want the bike with more owners on record, it is the TM31 or the TM33. Whether any bike here can be ridden on pavement is a question for your own DMV, and a listing is not a promise.
Where it loses to the TM33
The TM33 is the bigger machine. Its listing says it shares a frame size with the TM36, and one owner wrote that it is “bigger than I thought it would be.” Its seven reviews average 5.0. For $120 you get that frame and a cleaner record. If you are tall, or planning to ride in rougher terrain, pay it.
Don’t buy the TM31 if…
- •You do not want to touch a carburetor. Owners of this engine family talk about jetting and idle adjustment. If a screwdriver in the first week sounds like a chore, factor that in.
- •You want a bike for a child. This is an adult machine with a clutch and five gears. The adult range and the youth range are separate for a reason, and a young first-time rider belongs in the second.
- •You are tall. A 34-inch seat is full-size, but a tall rider will fit the TM33 better.
- •You are in California. The listing says: “NOT CARB approved, but you may use on your private land.” Check your own state’s rules before you buy any of these.
- •You want to be riding within the hour. It needs assembly, and one TM33 owner put it well: the bike “takes a little attention in the beginning.”
The three, side by side
Want to compare more full-size bikes? Browse the 250cc dirt bikes or call us on 877-667-6289 and tell us your height. We will point you at the right seat.
