2017–2019 · Enduro · Buyer's Guide
The Dirt Weapon With Plates
The 350 EXC-F sits in the sweet spot of the dirt world: a liquid-cooled 350 cc single making 59 hp and 25 lb-ft, hung in a chromoly steel frame with full-size 21/18 wheels, 12 inches of travel at both ends, and a plate on the back. The DOHC motor pulls cleanly off idle and keeps reaching, so you get the drive of a bigger thumper without carrying big-bore mass at the bars. WP suspension is adjustable front and rear straight from the factory. This is a real enduro machine with lights bolted to it, not a road bike wearing knobbies.
Ownership is dirt-bike ownership, and you should walk in knowing that. Service intervals are short, the 2.2 gal (8.5 L) tank sets your loop length before your legs do, and the 37.8 in seat means most riders touch one boot down, not two. There is no ABS, no traction control, no ride modes: your wrist is the only rider aid. That suits the intended buyer, an experienced off-road rider who wants the bike to keep up in rocks, ruts and sand rather than sand off the edges. Check the electrics and the intake boot before you hand over money.
Spec sheets don't ride bikes, but they set the baseline.
| Power | 59 hp (43 kW) |
|---|---|
| Torque | 25 lb-ft (34 Nm) |
| Displacement | 350 cc |
| Engine | Single-cylinder |
| Cooling | Liquid-cooled |
| Gearbox | 6-speed |
| Final drive | Chain |
| Fork | Upside-down (USD) |
| Front brake | 260 mm |
| Front tire | 90/90-21 |
| Rear tire | 140/80-18 |
| Wheelbase | 58.3 in (1482 mm) |
| Ground clearance | 14.0 in (355 mm) |
| Front travel | 11.8 in (300 mm) |
| Rear travel | 12.2 in (310 mm) |
| Seat height | 37.8 in (960 mm) |
| Fuel capacity | 2.2 gal (8.5 L) |
Equipment check
Chassis
This one comes from listening rather than riding. Years of pit conversations, talk at fuel stops and trailhead parking lots, club evenings, and messages riders send me directly. For the 350 EXC-F the accounts line up unusually well, and they center on how easy the bike is to place.
Two points come up in nearly every conversation. Riders describe a motor that answers a smooth hand with a wide, progressive pull instead of a hit, and they credit that spread for their confidence when the ground turns technical. They talk just as often about how little effort a direction change costs between trees and rocks, and how the bike stays settled as the speed rises. A smaller but steady group brings up the suspension and how gently it takes roots and rock.
Criticism shows up less often and with less agreement behind it. Heavier riders, and anyone pressing hard on fast, broken ground, report stock spring rates that go soft on them and cost control. A few say the exhaust is muted enough that other riders never hear them coming, and that some of the drama goes with it. Others describe the engine dying at crawling pace in the hardest sections unless the clutch keeps it alive.
Intermittent electrical failures (no spark, no speedo)
Numerous reports of sudden loss of spark and speedometer failure, often traced to a faulty pulse generator or poor stator connection; can strand the rider.
Intake boot tearing causing poor running
The rubber intake boot can tear during filter changes or from age, leading to unmetered air, lean running, rough idle, and stalling.
Idling issues on Sixdays and early-run models
Some early production and Six Days edition bikes experienced erratic idle and stalling, often linked to TPS calibration or fuel mapping, sometimes resolved with a dealer reflash.
Where this KTM 350 EXC-F 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 350 EXC-F is actually built for.
This is your bike. It has the suspension travel, the ground clearance and the low-speed control for slickrock ledges and sand washes, and the plate means you ride to the trailhead legally. Plan fuel stops around 2.2 gal.
Made for Moab · Bar M / Kane Creek · Imperial Sand Dunes
It is quick enough to run a moto and holds a line well on a groomed track, but it is tuned for traction and survival in the woods, not for hitting big jumps lap after lap. Buy it for trails first.
Made for Loretta Lynn's Ranch · Carnegie State Vehicular Recreation Area · Fox Raceway at Pala
Off pavement it will out-ride anything you would normally consider, but with 2.2 gal of fuel, no wind protection and no luggage mounts, multi-day route logistics become the whole project.
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 · 2015–2016
250 Soul, 450 Grunt
Compare to the previous model →If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.
