2018–2022 · Enduro · Buyer's Guide
Fuel Injection Changes Everything
The 250 EXC TPI runs a 249 cc liquid-cooled two-stroke single with fuel injected straight into the transfer ports, which takes jetting off your to-do list and lets the engine sort itself out as the elevation changes under you. On paper it makes 52 hp and 27 lb-ft, and those numbers matter far less than how light the bike feels and how willingly it revs. Around the motor sits a chromoly steel frame, fully adjustable WP XPLOR suspension at both ends, a six-speed box and 21/18-inch wheels. This is a competition enduro machine, not a softened trail bike wearing knobbies.
Who it suits is easy to state: riders who already have the skill to use a sharp, light two-stroke in terrain that punishes mistakes. There are no rider aids at all, no ABS and no traction control, so grip management is your right wrist and nothing else. Ownership asks for attention in return. The injection hardware has its habits, and the tall 37.8-inch seat plus a 2.4-gallon tank set real limits on who fits the bike and how far you ride between fill-ups. Stay on top of it and it stays an honest, hard-edged tool.
Spec sheets don't ride bikes, but they set the baseline.
| Power | 52 hp (38 kW) |
|---|---|
| Torque | 27 lb-ft (36 Nm) |
| Displacement | 249 cc |
| Engine | Single-cylinder |
| Cooling | Liquid-cooled |
| Gearbox | 6-speed |
| Front tire | 80/100-21 |
| Rear tire | 110/100-18 |
| Wheelbase | 58.3 in (1482 mm) |
| Ground clearance | 14.6 in (370 mm) |
| Front travel | 11.8 in (300 mm) |
| Rear travel | 12.2 in (310 mm) |
| Seat height | 37.8 in (960 mm) |
| Fuel capacity | 2.4 gal (9 L) |
Equipment check
Chassis
Oil starvation in TPI system
Some owners reported insufficient oil delivery to the engine via the TPI system, potentially leading to increased wear. Adding premix was a common stopgap solution.
Faulty crankcase pressure sensor
A known issue with the TPI system where the crankcase pressure sensor fails, causing erratic engine behavior. Replacement resolves the problem but the sensor is relatively expensive.
Engine stalling or hesitation under acceleration
Some riders experience hesitant throttle response or stalling, often linked to fueling inconsistencies. Cleaning the fuel filter and injector can mitigate the problem.
Where this KTM 250 EXC TPI pulls ahead of — or falls behind — its rivals on the numbers, and the typical bike in its class on character.
Power
Torque
Displacement
Seat height
Forget spec-sheet bragging. Here's who the 250 EXC TPI is actually built for.
This is exactly your tool. Steep, technical, grip-dependent terrain is where it shines, and the suspension takes proper tuning for rock or sand. Just plan around the 2.4-gallon tank on big days.
Made for Bar M / Kane Creek · Imperial Sand Dunes · Johnson Valley OHV Area
It will hold a decent pace around a track and the suspension has the travel for it. Understand what you are buying though: this is built for terrain and traction, not for gate starts and big-air motos.
Made for Carnegie State Vehicular Recreation Area · Fox Raceway at Pala · Glen Helen Raceway
Wrong tool for multi-day route work. There is no luggage provision, the seat sits at 37.8 inches and the tank holds 2.4 gallons. Brilliant for the hardest sections, punishing for the miles between them.
Made for AZBDR — Arizona Backcountry Discovery Route · California BDR South · COBDR — Colorado Backcountry Discovery Route
If you're cross-shopping the older generation, here's what changed.
Previous generation · 2017
Two-Stroke Trail Assassin
Compare to the previous model →If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.
