2018–2022 · Enduro · Buyer's Guide
Injected Two-Stroke, Zero Compromise
The Sixdays trim wraps the 300 EXC TPI in the parts most riders bolt on later anyway: anodized CNC-machined triple clamps and Six Days graphics that commemorate KTM's record at the International Six Days Enduro. Underneath sits what actually matters. A 293 cc liquid-cooled single, fuel injected rather than carbureted, making 55 hp and 34 lb-ft through a six-speed box and chain. The delivery is smooth and linear with real torque low down, which is exactly the tuning the extreme enduro and technical trail world asks for. It is a competition enduro machine with a plate on the back, not a soft trail bike.
It rides the way a bike aimed at rock, roots and steep, ugly ground should ride. Light on its feet, willing to be placed rather than steered, with 11.8 in (300 mm) of fork travel and 12.2 in (310 mm) at the rear soaking up the hits, both ends adjustable from the factory. Ownership rewards riders who keep on top of the injection side; that system is where attention gets paid over the years. The honest caveat: 37.8 in (960 mm) of seat height, 2.5 gal (9.5 L) of fuel, and no electronic rider aids of any kind. Nothing about this bike is casual, and it was never meant to be.
Spec sheets don't ride bikes, but they set the baseline.
| Power | 55 hp (40 kW) |
|---|---|
| Torque | 34 lb-ft (46 Nm) |
| Displacement | 293 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 | 14.6 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 | 2.5 gal (9.5 L) |
Equipment check
Chassis
What follows comes from years of listening: paddock talk, club nights, long chats with owners, and the messages riders send me after a season on one. The pattern for this bike is clear. Owners love how it behaves when the going gets slow and tight, and many had to fiddle with the stock setup before the throttle felt right.
The praise riders repeat most is about low-speed composure. Owners describe technical climbs and slow maneuvering without drama, with pull right off idle and no sudden hit to catch them out. Just as often they mention confidence in tight singletrack, where the bike feels easy to flick between lines. Several say they rode it a good while before feeling the need to spend on upgrades.
The most common gripe sits at the bottom of the rev range. Many owners find the stock mapping lean or hesitant at low rpm, and an idle screw adjustment or aftermarket ECU tune shows up in plenty of ownership stories. Riders doing long days far from fuel call range a concern, and a few shorter owners struggle to get a foot down on uneven ground.
Potential oil starvation from injection system
Some owners have reported that the TPI oil pump does not deliver sufficient oil at high rpm or under heavy load, potentially leading to engine wear. Aftermarket oil pump adjustment or adding premix are common mitigating steps.
Fuel injector clogging
The fine passages in the TPI injectors can become clogged with debris, leading to rough running, hard starting, or loss of power. Regular cleaning and use of quality fuel are recommended.
Crank case pressure sensor failure
A few owners have reported erratic engine behavior traced to a faulty crank case pressure sensor, which can cause stalling or poor running.
Where this KTM 300 EXC TPI Sixdays 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 300 EXC TPI Sixdays is actually built for.
This is your bike. Slickrock ledges, sand washes and the lines nobody else picks are exactly what it was built for. Just plan your day around that 2.5 gal (9.5 L) tank.
Made for Bar M / Kane Creek · Imperial Sand Dunes · Johnson Valley OHV Area
It holds up fine on a track and the suspension has the travel for it, but the gearing and torque delivery were tuned for terrain, not for holding a groove lap after lap.
Made for Carnegie State Vehicular Recreation Area · Fox Raceway at Pala · Glen Helen Raceway
Wrong tool for route logistics. There is no luggage, no wind protection and only 2.5 gal (9.5 L) of fuel, so a long BDR day turns into a fuel-stop chase instead of riding.
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 Enduro Taken Seriously
Compare to the previous model →If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.
