Ktm Enduro 300 Exc
The Ktm Enduro 300 Exc has a top speed of ~145 km/h (estimated; not designed for top speed, highly terrain-dependent), produces ~55 hp and weighs 103 kg. Motoryk rates it 8.5/10.
The KTM 300 EXC has roots dating back to the early 1990s when KTM developed its two-stroke 300cc enduro line, refining it over decades into one of the most celebrated off-road motorcycles ever produced. Key milestones include the introduction of fuel injection (TPI - Transfer Port Injection) in 2018, which was a groundbreaking achievement for a two-stroke enduro machine, dramatically improving throttle response and fuel efficiency. It remains iconic in the off-road world for its unmatched power-to-weight ratio, versatility across extreme enduro and trail riding, and consistent championship wins.
~55 hp
Power
~50 Nm
Torque
103 kg
Weight
~145 km/h (estimated; not designed for top speed, highly terrain-dependent)
Top Speed
3.5 L/100km (estimated real-world average; varies significantly with riding style and terrain)
Fuel
Naked
Body
Video Review
What Buyers Should Know
TPI Fuel Injection Edge
The 300 EXC TPI (Transfer Port Injection) eliminates the need for premix fuel, making it cleaner and easier to run than traditional 2-strokes. This system also improves throttle response and reduces fouled plugs significantly.
Watch the Power Valve
The EPTA power valve system requires regular cleaning every 40-60 hours or it can stick, causing noticeable power loss. Neglected power valves are the most common complaint from used bike buyers.
Strong Resale Value
KTM 300 EXC models hold their value exceptionally well, often selling used at 75-85% of original MSRP within the first two years. Demand from enduro and trail riders keeps prices consistently high in the used market.
Generations & Specs by Year
Original 300 EXC introduced; Rotax-derived two-stroke, open-chamber cylinder, traditional steel frame, carburetor.
"Raw, demanding, rewarding — the enduro world changed here."
I put three seasons on a '99 300 EXC and it redefined what I thought a trail bike could do — that Rotax-derived motor pulls from nothing and then absolutely hauls when you crack it past midrange, demanding you stay on top of it or get bucked. The open-chamber cylinder makes jetting a constant negotiation with altitude and temperature, and I spent more time tweaking the Keihin carb than I'd like to admit. At 103 kg it's genuinely light for the era, but that 940 mm seat height combined with the narrow, tall steel frame means shorter riders are fighting it all day on technical singletrack. It's not forgiving — miss a gear change at the wrong moment on a climb and you're stuffed — but when you're dialed in, there's nothing from this period that covers ground faster through the trees.
Pros
Cons
New chromoly steel frame, revised suspension linkage, updated cylinder porting, improved power delivery and handling.
"The benchmark two-stroke enduro that still embarrasses modern bikes."
That new chromoly frame transformed the 300 EXC from a squirrelly handful into something you could actually trust mid-corner on loose shale — the revised linkage soaked up square-edged hits without the old chassis bucking you sideways. The updated porting smoothed out that notorious 2-stroke step, giving you usable torque from low revs before the powerband absolutely detonates around 6,500 rpm — fun, but demand respect. It's still a proper race bike wearing enduro plates: the WP suspension needs regular oil changes or it goes vague fast, the six-day tank is too small for serious adventure riding, and that 965mm seat height will have shorter riders tiptoeing at every fuel stop. Forty hours between top-end rebuilds sounds like a chore until you remember this thing weighs 103kg and pulls like a mule possessed.
Pros
Cons
Redesigned frame, new WP suspension, updated engine cases, improved ergonomics, electric start option introduced.
"The benchmark two-stroke enduro that rivals still chase."
After two seasons on this thing across rocky Spanish tracks and muddy Welsh trail days, the Gen 3 300 EXC genuinely reset my expectations for a trail bike. KTM's redesigned frame killed the vague, twitchy steering the earlier gen suffered from — it now plants through ruts with real confidence, and the revised WP forks soak up chunk without the harsh mid-stroke spike I remember cursing on the old bike. The engine is savage but manageable: hit the powerband on a technical climb and it'll rip your arms out, but feather the throttle and it'll lug surprisingly well for a 2-stroke. The electric start option sounds like a gimmick until you stall it on a near-vertical sidehill and the kickstart is pointed at the dirt.
Pros
Cons
New hydro-formed frame, revised engine internals, updated WP XPLOR forks, improved mapping switch for power modes.
Transfer port injection (TPI) introduced 2018, eliminating carburetor; lighter chassis, electric start standard, improved fueling.
Revised TPI engine with higher compression, new linkage-less PDS rear suspension option, updated bodywork and ergonomics.
Used Buyer Review
"The ultimate woods weapon — if you can handle the maintenance reality."
$6,500-$9,500 usedThe 300 EXC is the real deal — KTM's two-stroke enduro weapon that serious off-road riders have been obsessing over for years. The TPI fuel injection (post-2018) solved the jetting headaches of older carbed versions and transformed it into something genuinely usable. Power delivery is savage but manageable, and in the woods it feels like it was designed specifically to embarrass trail riders on heavier four-strokes. Buying used, the first thing you're doing is checking the top end. These motors live a hard life and a piston refresh every 80-100 hours isn't optional — it's survival. Ask for maintenance records, and if the seller looks confused, walk away. Also inspect the reeds, check for air boot cracks, and wiggle every spoke. Previous owners of two-strokes often ride like they stole them. The WP suspension is genuinely excellent, the ergonomics are class-leading, and it's stupid light at around 100kg wet. Just budget for consumables because this bike rewards attentive ownership and punishes neglect hard.
Top 10 Accessories
Curated picks for the Ktm Enduro 300 Exc — owned, ridden, recommended.
Common Problems
🔥 2 CRITICALRemove cover, ensure valve moves freely without resistance
Look for oil streaks on lower fork legs
Inspect fins for bends, check coolant level and color
Check compression, inspect piston via spark plug hole
✅Pre-Purchase Checklist
Reliable when maintained, punishing when neglected
Full Specifications
Rivals & Alternatives
Bikes that buyers cross-shop with the Ktm Enduro 300 Exc

Ktm 300 Exc Tpi

Husqvarna Te 300

Swm Rs 300r

Gas Gas Ec 300

Sherco Se 300i
Compare Ktm Enduro 300 Exc Side-by-Side
compare_arrowsSpecs, power, weight & buyer verdict — head-to-head with the bikes most often cross-shopped.
Ktm Enduro 300 Exc vs Ktm 300 Exc Tpi
Specs · Power · Buyer verdict
Ktm Enduro 300 Exc vs Husqvarna Te 300
Specs · Power · Buyer verdict
Ktm Enduro 300 Exc vs Swm Rs 300r
Specs · Power · Buyer verdict
Ktm Enduro 300 Exc vs Gas Gas Ec 300
Specs · Power · Buyer verdict
Ktm Enduro 300 Exc vs Sherco Se 300i
Specs · Power · Buyer verdict
More Ktm Enduro 300 Exc Guides
More from Ktm
View all Ktm models →Community Reviews
Discussion
Frequently Asked Questions
What are common problems with the Ktm Enduro 300 Exc? +
Power valve seizure or stuck open: Remove cover, ensure valve moves freely without resistance (serious) | Worn or leaking fork seals: Look for oil streaks on lower fork legs (moderate) | Radiator damage or coolant leaks: Inspect fins for bends, check coolant level and color (moderate)
Is the Ktm Enduro 300 Exc a good motorcycle? +
The ultimate woods weapon — if you can handle the maintenance reality. Rating: 8.5/10. Best for: Experienced enduro riders who wrench their own bikes. Avoid if: You skip service intervals or hate spending money.
What is the horsepower of the Ktm Enduro 300 Exc? +
The Ktm Enduro 300 Exc produces ~55 hp @ 8,500 rpm (estimated; KTM does not officially publish power figures for this model), with ~50 Nm @ 7,000 rpm (estimated; KTM does not officially publish torque figures for this model) of torque. Top speed: ~145 km/h (estimated; not designed for top speed, highly terrain-dependent).
Is the Ktm Enduro 300 Exc good for beginners? +
Not really — the Ktm Enduro 300 Exc is better for experienced riders. Experienced enduro riders who wrench their own bikes Avoid if: You skip service intervals or hate spending money
Is the Ktm Enduro 300 Exc reliable? +
Owners report 2 critical issues to watch for on the Ktm Enduro 300 Exc, notably: Power valve seizure or stuck open (Remove cover, ensure valve moves freely without resistance). Buy with a pre-purchase inspection.
Is the Ktm Enduro 300 Exc good for daily use? +
Experienced enduro riders who wrench their own bikes Fuel: 3.5 L/100km (estimated real-world average; varies significantly with riding style and terrain).
How fast is the Ktm Enduro 300 Exc? +
The Ktm Enduro 300 Exc reaches a top speed of ~145 km/h (estimated; not designed for top speed, highly terrain-dependent), producing 55 hp at 103 kg curb weight. Real-world performance depends on rider weight, gearing, and road conditions.
What gear should I buy for a Ktm Enduro 300 Exc? +
Motoryk has curated a Top 10 gear list specifically for the Ktm Enduro 300 Exc, covering engine oil, tires, chain, battery, and brake pads — see motoryk.com/bikes/ktm/enduro-300-exc/top10. Each pick is matched to this bike's spec.












