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TL;DR
- TrailMaster TM23: 125cc four-stroke, semi-automatic (no clutch) 4-speed, electric and kick start, 29.13 in seat, 10.63 in ground clearance, 41.54 in wheelbase, a 170 lb max weight per TrailMaster's own published sizing chart. Retailer listings show it at $1,127.95 to $1,199.00.
- TrailMaster does not publish horsepower on its sizing chart; dealer listings state up to 8.3 hp and a top speed of about 45 mph. The FRP FX125 publishes 8.7 hp, about 56 mph, a 265 lb rider load and a price of $799.99 to $1,099.99.
- Riders also search "RFZ dirt bike" and "XB-38 dirt bike" for similarly sized 125cc pit bikes; RFZ is Apollo's line name, covered in a separate FRP review, and the XB-38 125 is a different budget import sold by other retailers, not a TrailMaster product.
- Best for: a rider who wants a semi-automatic 125 with no clutch to learn. Not right for: a rider who wants a published rider weight rating above 170 lb or the fastest bike in this price range.
TrailMaster is a long-running budget dirt bike brand sold through dealers rather than direct, and the TM23 is its 125cc semi-automatic model. This review covers the specs published across TrailMaster's own sizing chart and its authorized dealers, what they leave out, and where the FRP Moto FX125 fits.
"RFZ dirt bike" and "XB-38 dirt bike" are separate products from separate makers that turn up in the same searches as the TM23 because all three are similarly sized 125cc budget imports. RFZ is Apollo's own line name for its 125cc dirt bikes, covered in FRP's separate Apollo review. The XB-38 125 is a different bike sold by other retailers, not a TrailMaster model.
What are the TrailMaster TM23 specs?
| Spec | TrailMaster TM23 | FRP Moto FX125 (14/12 build) |
|---|---|---|
| Engine | 125cc 4-stroke | 125cc air-cooled 4-stroke |
| Power | Up to 8.3 hp (dealer listings; not on TrailMaster's own sizing chart) | 8.7 hp (6.5 kW) at 7,500 rpm |
| Start | Electric and kick | Electric and kick |
| Clutch / transmission | 4-speed semi-automatic, no clutch | 4-speed manual, wet multi-plate clutch |
| Seat height | 29.13 in | 28.1 in |
| Ground clearance | 10.63 in | 11.8 in |
| Wheelbase | 41.54 in | Not listed on the product page |
| Fuel tank | 0.92 gal (3.5 L) | About 1.2 gal |
| Tires | 60/100-14 front, 80/100-12 rear | 14 in front, 12 in rear |
| Max weight | 170 lb (TrailMaster's own published sizing chart) | 265 lb published |
| Top speed | About 45 mph (dealer listings; not on TrailMaster's own sizing chart) | About 56 mph (FRP figure) |
| Price | $1,127.95 to $1,199.00 across the dealers checked | $799.99 (Basic) to $899.99 (Pro) |
TrailMaster figures from its published dirt bike sizing chart and multiple authorized dealer listings (360 Power Sports, FamilyGoKarts, GoPowerSports), cross-checked September 28, 2026, since TrailMaster's own site could not be reached directly. Horsepower and top speed appear on dealer listings, not on TrailMaster's sizing chart itself, so they are noted as dealer-published rather than confirmed by the maker's own spec sheet. FX125 figures from the FRP product page on the same date. Prices exclude tax and can change.
How fast does the TrailMaster TM23 go?
TrailMaster's own published sizing chart does not include a top speed or a horsepower figure. Authorized dealer listings state up to 8.3 hp and a top speed of about 45 mph, which is consistent across the retailers checked but is not confirmed on TrailMaster's own spec sheet.
The FRP FX125 lists about 56 mph and 8.7 hp on its own product page. Both bikes are semi-automatic-free-to-manual 125cc trail bikes, but the TM23 is a no-clutch semi-automatic and the FX125 is a true manual.
What is the weight limit on a TrailMaster TM23?
TrailMaster's own dirt bike sizing chart lists a 170 lb max weight for the TM23, alongside a 29.13 in seat height and a 41.54 in wheelbase. The FX125 lists a 265 lb maximum rider load, about 95 lb more headroom.
Who should buy a TrailMaster TM23?
The TM23 is the right choice if:
- You want a semi-automatic 125 with no clutch to learn, which the FX125 does not offer.
- The rider is under about 170 lb, per TrailMaster's own sizing chart.
- You want electric and kick start together, same as the FX125.
- You are buying through an established TrailMaster dealer.
Who should NOT buy a TrailMaster TM23?
The TM23 is the wrong choice if:
- The rider is over 170 lb. TrailMaster's own chart caps the TM23 there; the FX125 is rated to 265 lb.
- You want a manual clutch to learn on a 125.
- You want the maker's own top speed and horsepower figures rather than dealer-stated ones.
- You want the lowest starting price: the FX125 14/12 Basic starts lower than the dealer prices seen for the TM23.
TrailMaster TM23 vs FX125: the practical decision
The TM23's edge is its no-clutch semi-automatic gearbox, which suits a rider who is not ready to learn a clutch. The FX125 answers with a 265 lb rider rating against the TM23's 170 lb, a manual clutch for riders who want to learn one, and a lower starting price. For a rider under 170 lb who wants to skip the clutch, the TM23 makes sense. For a rider who wants the higher weight rating or a manual gearbox, the FX125 covers more ground.
What are the TrailMaster TM23's real strengths?
- No clutch to learn. A 4-speed semi-automatic that shifts without a clutch lever.
- Electric and kick start. The same setup as the FX125.
- A published sizing chart. TrailMaster states seat height, wheelbase and a max weight across its whole dirt bike range in one place.
- Multiple authorized dealers. The TM23 is easy to find and buy through an established network.
What are the TrailMaster TM23's main weaknesses?
- A 170 lb weight cap. Well under the FX125's 265 lb.
- No horsepower or top speed on TrailMaster's own chart. Those numbers come from dealers, not the maker's own sizing page.
- Price. $1,127.95 to $1,199.00 across the dealers checked, above the FX125's starting price.
- No manual clutch option. A rider who wants to learn one has to look elsewhere.
Where does the FRP Moto FX125 give ground?
The FX125 has no semi-automatic build, so a rider who specifically does not want to learn a clutch has no FX125 option that fits. FRP has no dealer network, and the FX125 is not sold in California.
Is the TrailMaster TM23 the right buy?
What the TM23 delivers is what TrailMaster's sizing chart and its dealers list: a 125cc no-clutch semi-automatic with a 170 lb weight cap, a 29.13 in seat and electric plus kick start. What it does not deliver on TrailMaster's own chart is a horsepower or top-speed figure, and its dealer price runs above the FX125's starting price.
For a rider under 170 lb who wants to skip the clutch, the TM23 is a sound choice. For a rider who wants a higher rated weight or a manual gearbox to learn, the FX125 covers more ground. The FX125 product page has the specs for both builds, and the FRP dirt bike lineup shows the whole range.
What do FRP FX125 owners say?
The FX125 product page shows 5 reviews with a 4.4 average. Two of them:
- Britney H., verified buyer, 5 stars, September 12, 2026: “My 12 year old is loving this bike. Took no time for him to get the hang of the clutch and shifter. Very happy with my purchase!”
- Alessandro S., reviewer, 5 stars, August 10, 2026: “Supper fun will deffenetly be buying this one when i get the money”
The first review is the real-world answer to the manual-clutch question: a 12-year-old picked up the clutch and shifter quickly.
Reviews quoted as posted on the FRP FX125 product page, checked September 28, 2026.
What did a rider who bought the FX125 report in his own videos?
Darzrt bought an FX125 17/14 and posted a TikTok series about it from June to August 2026, plus the first-look video above. Here is what he said, in his own words or close to them:
- Unboxing: the bike came in a metal crate, with a bag holding a backpack, a water pack, goggles and gloves.
- First start: he changed the engine oil (about 0.6 quart), fueled it, and started it with the key and the electric start button. He pointed out the digital dash.
- Fit: at about 6 ft and 200 lb he said he was comfortable on it and called the frame beefy.
- Speed: on a later ride with a friend, including hill climbing, he said it did 52 mph with him on it at 195 lb. FRP lists about 56 mph.
- Using it: he entered the bike in a county fair pit bike race, changed the grips for it, and said he wanted to try the FX140 next.
As with any new bike, check the engine oil level before the first start and go over the bolts after assembly.
FAQ
What is the top speed of a TrailMaster TM23?
TrailMaster's own sizing chart does not list a top speed. Dealer listings state about 45 mph. The FRP FX125 lists about 56 mph.
What is the weight limit on a TrailMaster TM23?
TrailMaster's own published sizing chart lists a 170 lb max weight for the TM23. The FRP FX125 is rated to 265 lb.
Is the TrailMaster TM23 the same as the RFZ or the XB-38 125?
No. RFZ is Apollo's own line name for its 125cc dirt bikes, covered separately. The XB-38 125 is a different budget import sold by other retailers. The TM23 is TrailMaster's own 125cc semi-automatic model.
Is the TrailMaster TM23 manual or automatic?
It is a 4-speed semi-automatic with no clutch lever. The FX125 is a true 4-speed manual with a clutch.
How much does a TrailMaster TM23 cost?
Dealer listings checked on September 28-29, 2026 showed $1,127.95 to $1,199.00. The FRP FX125 starts at $799.99, and the dirt bike lineup lists every option.
Where to go from here
If you want a no-clutch semi-automatic 125 under 170 lb, the TM23 is a sound choice. If you want a higher rated weight or a manual clutch, look at the FX125.
