KTM 350 EXC-F (Six Days / Enduro) — OEM Fluid, Tire Pressure & Maintenance Specs
349.7cc Liquid-Cooled Single DOHC 4-Valve Titanium-Valve Street-Legal Race Enduro (DDS Clutch) · Source: KTM 350 EXC-F Official Owner’s Manual (Operating-Hour Schedule & Dual-Sport Equivalent)
According to the KTM 350 EXC-F Official Owner’s Manual (Operating-Hour Schedule & Dual-Sport Equivalent), the 2020–Present KTM 350 EXC-F (Six Days / Enduro) (chassis VBKEXA40/EXA) requires 1.05 L (1.11 US qt) of SAE 10W-50 (JASO MA2, API SN Fully Synthetic (Motorex Cross Power 4T 10W-50 / 10W-60)) engine oil for a drain-only change and 1.2 L (1.27 US qt) with filter service (77338005100 / HF652). Standard solo cold tire pressure is 180 kPa / 1.80 bar / 26 PSI front (90/90-21 54M TT) and 180 kPa / 1.80 bar / 26 PSI rear (140/80-18 70M TT), paired with 1× NGK LMAR9AI-8 spark plug(s) and a HJTZ5S-FP (LiFePO4) battery.
Drain only: 1.05 L (1.11 US qt)
R 180 kPa (1.80 bar)
Est. Range: ~187 km (116 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-50 (Alt: SAE 10W-60 (하드 엔듀로/혹서기 가혹 주행 권장)) · JASO MA2 · API SN Fully Synthetic (Motorex Cross Power 4T 10W-50 / 10W-60) |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 1.05 L (1.11 US qt) • With filter/strainer: 1.2 L (1.27 US qt) • Complete dry overhaul: 1.35 L (1.43 US qt) |
| OEM Oil Filter Code & Type | 77338005100 / HF652 |
| Correct Oil Level Check Method | Hold bike upright on level ground 3–5 min after warm shutdown; read crankcase sight glass |
| Oil Drain Bolt Torque | 20 N·m (14.8 lb-ft / 2.04 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 90/90-21 54M TT · Rear: 140/80-18 70M TT (Tube-Type Spoke Rim) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 180 kPa / 1.80 bar / 26 PSI Rear: 180 kPa / 1.80 bar / 26 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 200 kPa / 2.00 bar / 29 PSI Rear: 220 kPa / 2.20 bar / 32 PSI |
| OEM Spark Plug & Quantity | NGK LMAR9AI-8 × 1 (Gap: 0.8 mm) |
| OEM Battery Code & Rating | HJTZ5S-FP (LiFePO4) (12V 2.0Ah Ultralight LiFePO4 Lithium) |
| Final Drive Maintenance | 520 X-Ring Enduro Chain — 55–58 mm slack above swingarm chain slider toe |
| Brake Fluid & Coolant | DOT 4 or DOT 5.1 · Motorex Coolant M3.0 Silicate-Free Premix (~1.0 L) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 350 cc · 45 hp @ 10,000 rpm · 36 N·m (26.6 lb-ft) @ 7,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 960 mm (37.8 in) · 110 kg (243 lbs) |
| Fuel Tank & Est. Real-World Range | 8.5 L (2.2 US gal) · ~22 km/L → ~187 km (116 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 500 km • Engine Oil / Filter: 1,500 km / 1,500 km • Air Filter / Spark Plug: 500 km / 6,000 km • Valve Clearance Check: 3,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Following the 2020–2023 WP XPLOR generation, the all-new 2024+ 350 EXC-F introduced a stiffer hydroformed chromoly frame, 48mm WP XACT closed-cartridge spring forks, PDS shock updates, and fuse-free solid-state Offroad Control Unit electronics.
Oil & Clutch Mechanical Engineering Note
Unlike casual dual-sports, the 110 kg 350 EXC-F is a competition-bred enduro tracked by engine HOURS rather than odometer kilometers: first oil change at 1 hour, routine oil + 77338005100 filter every 15 hours (~750–1,500 dual-sport km), and titanium valve check every 30 hours (~3,000 km). Always run Motorex Cross Power 4T 10W-50 or 10W-60 JASO MA2!
Garage Wrenching Gotchas
- The left airbox door pops off tool-free: NEVER run the twin-layer foam air filter dry—clean and re-oil with tacky foam-filter oil after every dusty trail ride to protect the titanium intake valves.
- Road legal pressure is 1.8 bar (26 PSI), whereas technical single-track riders air down to 0.8–1.0 bar (12–15 PSI) with rim locks or run Bib Mousses. Also verify your Brembo clutch master cap: modern EXC-F clutches use DOT 4 / 5.1 fluid, NOT Magura mineral oil!
5. Frequently Asked Questions (FAQ)
Is the KTM 350 EXC-F suitable for daily highway commuting?
While street-legal, its 1.2 L oil bath, uncushioned race rear hub, and 15-hour oil intervals are engineered for dirt trails rather than highway commuting; road-heavy riders are far better served by a 690 Enduro R.
How do you accurately check the 1.2 L oil level on a 350 EXC-F?
With a new 77338005100 paper filter and cleaned suction screen, pour 1.20 L (1.27 US qt) and check upright 1 minute after warm shutdown—cold readings sit near the bottom of the glass by design.
Why does the 350 EXC-F lithium battery crank slowly in freezing weather?
Ultralight LiFePO4 cells stiffen in sub-zero cold; tap the starter briefly to wake internal chemistry, wait 20 seconds, and crank again—and charge ONLY with a lithium-safe maintainer.