KTM 300 EXC SIX DAYS [2018-2020]: The Enduro Legend Refined

Introduction

The KTM 300 EXC SIX DAYS isn’t just a motorcycle—it’s a statement. Designed for riders who demand uncompromising performance in the most brutal off-road conditions, this two-stroke enduro machine from KTM’s prestigious Six Days lineup (2018-2020) represents a golden era of lightweight agility and raw power. Built to dominate hard enduro races, trail rides, and everything in between, the 300 EXC SIX DAYS blends Austrian engineering with race-bred innovations. After spending days wrestling this machine through rocky ascents, muddy single-tracks, and forest trails, here’s why it remains a benchmark in the enduro world.

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Design & Build: Purposeful Aggression

The Six Days edition screams "race-ready" with its signature orange frame, bold graphics, and minimalist bodywork. The 2018-2020 models feature unique color accents (blue/red/green depending on the year) and commemorative Six Days badging, giving it a premium feel over the standard EXC.

The chromoly steel central-tube frame is a masterpiece of balance—stiff enough for precise handling yet compliant over roots and rocks. At 103 kg (227 lbs), the bike feels shockingly light when muscling through tight trails. The 960 mm (37.8") seat height might intimidate shorter riders, but the narrow midsection lets you grip the bike effortlessly. Standover ground clearance of 370 mm (14.6") ensures you’ll glide over logs without scraping.

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Engine & Performance: Two-Stroke Brilliance, Modernized

The Heart of the Beast

The 293.2cc liquid-cooled two-stroke engine is a marvel. Unlike traditional carbureted two-strokes, the 2018-2020 models feature KTM’s Transfer Port Injection (TPI), which electronically meters fuel directly into the cylinder. This eliminates messy premixing while delivering crisp throttle response and reduced emissions.

Power Delivery:
The TPI system smooths out the notorious "hit" of classic two-strokes, offering linear torque from idle to redline. Low-end grunt is addictive—you can lug the engine at 1,500 RPM in third gear while climbing technical hills, then unleash a surge of mid-range power as the exhaust valve opens. Top-end rush is exhilarating but never overwhelming, making it forgiving for less experienced riders.

Fuel Efficiency:
With an average consumption of 2.79 L/100 km (84.3 mpg), the 9-9.5L (2.38-2.51 gal) tank provides a 150+ km (93+ mi) range—a rarity in the two-stroke world. The TPI system plays a key role here, optimizing fuel-air ratios across RPM ranges.

Electric Start (and Kick):
The 2018-2019 models include both electric and kick starters, while the 2020 variant drops the kickstarter. Either way, the electric start fires up the engine instantly, even after a crash.

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Handling: Dance With the Terrain

Suspension Setup

The WP Xplor 48 USD fork (300 mm/11.8" travel) and WP Xplor PDS rear shock (310 mm/12.2" travel) are tuned for enduro brutality. Out of the box, the suspension is plush over small bumps yet firm enough to handle big hits. Preload adjusters on the fork let you fine-tune for rider weight, while the PDS shock eliminates linkage for reduced maintenance and better clearance.

On the Trail:
Flicking the 300 EXC through switchbacks feels like cheating. The lightweight chassis and 1482 mm (58.3") wheelbase provide razor-sharp turn-in, while the PDS rear maintains traction on exits. At speed, the bike stays composed—the fork soaks up braking bumps, and the shock keeps the rear planted during acceleration.

Brakes

Brembo’s signature bite is here. The front 260mm disc with twin-piston caliper offers progressive stopping power, while the rear 220mm disc is easy to modulate for slides. Brake fade is nonexistent, even after hours of abuse.

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Competition: How Does It Stack Up?

The 300 EXC SIX DAYS battles in a niche dominated by two-stroke enduro bikes. Key rivals include:

1. Beta 300 RR

• Pros: Softer suspension for trail riders, carbureted simplicity.
• Cons: Lacks TPI’s fuel efficiency and emissions compliance. Heavier at 108 kg (238 lbs).
• Verdict: The Beta suits riders who prefer a mellower powerband, but the KTM dominates in technical terrain.

2. Husqvarna TE 300i

• Pros: Shares KTM’s TPI tech but with Husqvarna’s ergonomics (lower seat height: 950 mm/37.4").
• Cons: Higher price, less aggressive suspension tuning.
• Verdict: A sibling rivalry—choose the Husky for comfort, the KTM for race-ready edge.

3. Sherco SE 300 Factory

• Pros: Premium components (KYB suspension), ultra-lightweight.
• Cons: Limited dealer network, higher maintenance costs.
• Verdict: A boutique alternative, but the KTM’s aftermarket support is unmatched.

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Maintenance: Keeping the Beast Alive

Key Considerations

1. Air Filter: The TPI system reduces carb-related issues, but the air filter still needs regular cleaning. Upgrade to a twin-air filter for better dust protection.
2. Piston Replacements: Two-strokes demand frequent top-end rebuilds. Inspect every 80-100 hours (or sooner for racers).
3. Cooling System: Use high-quality coolant and check for leaks—the compact radiatiors can bend in crashes.
4. Chain & Sprockets: The 14:50 gearing (13:50 for technical rides) wears quickly. Swap to an X-ring chain and steel sprockets for longevity.

MOTOPARTS.store Recommendations

• Suspension Upgrades: Retrofit WP XACT Pro forks for pro-level adjustability.
• Handguards: Protect levers with robust barkbusters.
• Skid Plates: Shield the frame and engine from rock strikes.
• Grips: ODI lock-ons reduce vibration fatigue.

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Conclusion: Why It Still Matters

The KTM 300 EXC SIX DAYS (2018-2020) is a masterclass in enduro design. It’s a bike that rewards skill without punishing mistakes, blending the raw thrill of a two-stroke with modern reliability. Whether you’re racing a Hard Enduro or exploring backcountry trails, this machine feels alive beneath you—a partner in chaos.

And when it’s time to tweak, repair, or upgrade? That’s where we come in. At MOTOPARTS.store, we’ve got the gear to keep your 300 EXC at peak performance. From piston kits to billet accessories, your next adventure starts here.

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Specifications sheet

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