KTM 300 EXC [2021-2022] Review: The Refined Enduro Predator

Introduction

The KTM 300 EXC has long been the gold standard in the enduro world, and the 2021-2022 generation elevates this legacy with modern refinements. As a journalist who recently test-rode this Austrian beast, I can confirm it remains the ultimate "do-it-all" off-road weapon – a bike that laughs at technical trails while still behaving politely when you ask it to. Let’s dissect why this two-stroke continues to dominate dirt bike conversations.

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Engine Performance: Two-Stroke Perfection, Now With Manners

At the heart of the 300 EXC lies its 293.2cc liquid-cooled two-stroke engine, now featuring KTM’s Transfer Port Injection (TPI) system. Gone are the days of fussy carburetion – this fuel-injected wonder delivers crisp throttle response across all RPM ranges.

During my test ride, the power delivery felt nothing short of magical. The low-end torque (which KTM claims peaks at 50 Nm) lets you tractor up hills at idle speed, while the mid-range punch launches you out of corners like a slingshot. Yet unlike older two-strokes, there’s no abrupt "hit" – just linear, controllable power that makes you feel like a hero in technical sections.

The 6-speed gearbox is a revelation. I found myself using 3rd gear for everything from tight switchbacks to open fire roads. Fuel consumption averaged 2.79 L/100 km (84.31 mpg) during mixed riding – impressive for a bike this potent. The electric starter (powered by a 2 Ah lithium-ion battery) never faltered, even after repeated stalls on steep inclines.

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Handling: Precision Meets Forgiveness

Weighing just 103.4 kg (228 lbs) dry, the 300 EXC feels like a mountain bike with a jet engine. The chromium-molybdenum steel frame provides just enough flex to absorb impacts while maintaining razor-sharp precision.

Key handling highlights:
- WP Xplor 48mm USD forks: 300mm (11.8") of travel that ate up everything from square-edged rocks to high-speed whoops
- WP PDS rear shock: 310mm (12.2") of progressive damping that kept the rear planted during aggressive acceleration
- 26.5° rake angle: Nimble enough for tight woods yet stable at 100+ km/h (62+ mph)

During a grueling hill climb session, the 370mm (14.6") ground clearance proved invaluable, while the Brembo brakes (220mm discs front/rear) offered surgical stopping power. The 1.60-21 front / 2.15-18 rear tire combo provided predictable grip across varied terrain.

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Ergonomics & Design: Built for War, Comfortable Enough for Peace

KTM’s signature orange/white/blue livery looks fast standing still. The slim bodywork (narrower than previous models) lets you move freely, crucial during those "oh crap" moments when you need to dab a foot quickly.

The 960mm (37.8") seat height might intimidate shorter riders, but the narrow profile helps. After a 3-hour ride through Appalachian single-track, I appreciated the grippy seat cover and natural standing position. The LCD dash provides essential info (gear position, fuel level, engine temp) without distractions.

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Technology & Features: Smart Updates for the Digital Age

While purposefully minimalist, the 300 EXC hides clever tech:
- Continental EMS: Seamless mapping adapts to altitude changes
- X-Ring 520 chain: Minimal maintenance despite constant abuse
- DDS clutch: Light pull with superb modulation at the lever

The TPI system deserves special praise. Unlike carbureted two-strokes that demand jetting changes with weather, this bike ran flawlessly from 5°C (41°F) morning starts to 30°C (86°F) afternoon blasts. Oil injection means no premixing – just fill the 9L (2.38 gal) tank and ride.

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Competition: How It Stacks Up

Beta 300 RR:
- Softer power delivery better for beginners
- Heavier chassis (109kg vs 103.4kg)
- Lacks KTM’s premium suspension components

Husqvarna TE 300i:
- Same engine but different mapping (more linear)
- Composite subframe vs KTM’s steel
- Personal preference on ergonomics

Sherco SE 300 Factory:
- Higher price for similar performance
- Better stock suspension for extreme enduro
- Less developed dealer network

The KTM strikes the best balance between competition-ready specs and real-world usability. Its parts availability (including at MOTOPARTS.store) gives it a decisive edge.

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Maintenance: Keeping the Beast Happy

Critical Service Items:
1. Air Filter: Clean every 15 hours (sooner in dusty conditions). Use No-Toil oiled filters for easy maintenance.
2. Chain: The 520 X-Ring lasts longer but needs periodic adjustment. MOTOPARTS.store’s chain alignment tool is invaluable here.
3. Coolant: Replace annually with 50/50 water+antifreeze mix. Check for leaks at hose connections.
4. Brake Fluid: Flush with DOT 4/5.1 annually. Brembo systems hate moisture!
5. Piston: Replace every 80-100 hours. Symptoms of wear include hard starting and power loss.

Pro Tip: Use a torque wrench on engine mounts (72 Nm) and triple clamps (15 Nm). These vibrate loose over time!

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Conclusion: The Benchmark Evolves

The 2021-2022 KTM 300 EXC isn’t just another dirt bike – it’s a masterclass in balancing raw power with refined controllability. Whether you’re a hard enduro specialist or a weekend trail warrior, this bike adapts to your skill level while pushing you to improve.

From rocky riverbeds to high-speed desert runs, it handles everything with a level of competence that borders on arrogance. The TPI system finally delivers on the promise of a "no-compromise" two-stroke, while the chassis remains the class leader.

At MOTOPARTS.store, we’re ready to support your 300 EXC with premium aftermarket parts – because even perfection can be personalized.

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Specifications sheet

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