KTM 450 EXC-F — OEM Fluid, Tire Pressure & Maintenance Specs
449.9cc Liquid-Cooled Single SOHC 4-Valve (PDS Rear Suspension) · Source: KTM 450 EXC-F (2020–Present) Official Owner’s Manual Maintenance Specifications
According to the KTM 450 EXC-F (2020–Present) Official Owner’s Manual Maintenance Specifications, the 2020–Present KTM 450 EXC-F (chassis VBKEXA40-450/449.9cc) requires 1.1 L (1.16 US qt) of SAE 10W-50 (JASO MA2, Motorex Cross Power / Power Synt 4T) engine oil for a drain-only change and 1.2 L (1.27 US qt) with filter service (77338005100 / HF652 (+ Dual Screens)). Standard solo cold tire pressure is 150 kPa / 1.50 bar / 22 PSI front (90/90-21) and 150 kPa / 1.50 bar / 22 PSI rear (140/80-18), paired with 1× NGK LMAR9AI-8 / LKAR8AI-9 spark plug(s) and a HJTZ5S-FP (LiFePO4) / YTZ10S battery.
Drain only: 1.1 L (1.16 US qt)
R 150 kPa (1.50 bar)
Est. Range: ~179 km (111 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 (LC4 690/701)) · JASO MA2 · Motorex Cross Power / Power Synt 4T |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 1.1 L (1.16 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 (+ Dual Screens) |
| 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 · Rear: 140/80-18 (Tube-Type Spoke Rim) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 150 kPa / 1.50 bar / 22 PSI Rear: 150 kPa / 1.50 bar / 22 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 180 kPa / 1.80 bar / 26 PSI Rear: 180 kPa / 1.80 bar / 26 PSI |
| OEM Spark Plug & Quantity | NGK LMAR9AI-8 / LKAR8AI-9 × 1 (Gap: 0.8 mm) |
| OEM Battery Code & Rating | HJTZ5S-FP (LiFePO4) / YTZ10S (12V Lithium / AGM) |
| Final Drive Maintenance | 520 Sealed X-Ring Chain — Maintain 25–35 mm slack and clean/lubricate regularly |
| Brake Fluid & Coolant | DOT 4 or DOT 5.1 · OAT ethylene-glycol coolant for aluminum radiators (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 450 cc · 58 hp @ 8,800 rpm · 51 N·m (37.6 lb-ft) @ 7,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 955 mm (37.6 in) · 113 kg (249 lbs) |
| Fuel Tank & Est. Real-World Range | 8.5 L (2.2 US gal) · ~21 km/L → ~179 km (111 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 500 km • Engine Oil / Filter: 2,500 km / 2,500 km • Air Filter / Spark Plug: 2,500 km / 10,000 km • Valve Clearance Check: 5,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Sharp-revving E2-class 450cc enduro pairing a shorter-stroke SOHC single with rock-clearing linkless WP PDS suspension and Brembo hydraulic DDS diaphragm clutch.
Oil & Clutch Mechanical Engineering Note
Feeds both the hydraulic cam-chain tensioner and DDS diaphragm clutch from a compact 1.2 L SAE 10W-50 sump—replace filter HF652 and clean both suction screens every 15 hours.
Garage Wrenching Gotchas
- Lean the bike slightly left and pre-fill the oil filter cavity halfway before bolting the cover on so the trochoid oil pumps prime instantly on startup.
- A clogged in-tank micro fuel filter mimics EFI mapping bog under load—replace the in-tank fuel filter element preventively every 40–50 hours.
5. Frequently Asked Questions (FAQ)
What oil volume, JASO grade, and oil filter code does the KTM 450 EXC-F (2020–Present) require?
Because its wet multi-plate clutch shares engine oil with the gearbox, run SAE 10W-50 (JASO MA2) at 1.1 L (1.16 US qt) drain-only and 1.2 L (1.27 US qt) with filter (77338005100 / HF652 (+ Dual Screens)).
How do you accurately check the oil level on the 450 EXC-F, and what are its service intervals?
Hold the motorcycle dead-vertical on level ground 2–3 minutes after warm shutdown and verify the oil sits mid-way between the Upper and Lower marks in the crankcase sight glass—never on the sidestand. Torque the drain plug to 20 N·m with a new crush washer. Factory oil change intervals are every 2,500 km, with valve clearance inspection every 5,000 km.
What are the cold tire pressures, puncture repair type, seat height, and range of the 450 EXC-F?
Equipped with 90/90-21 front and 140/80-18 rear tube-type rims (mushroom/string plugs will not seal—carry spare inner tubes), set cold tire pressures to 22 / 22 PSI (150/150 kPa) solo or 26 / 26 PSI loaded. Seat height is 955 mm (37.6 in) at 113 kg wet weight, delivering ~179 km per 8.5 L tank.