KTM 990 RC R — OEM Fluid, Tire Pressure & Maintenance Specs
947cc Liquid-Cooled Parallel-Twin DOHC 8-Valve High-Output LC8c · Source: KTM 990 RC R (2025–Present) Official Owner’s Manual Maintenance Specifications
According to the KTM 990 RC R (2025–Present) Official Owner’s Manual Maintenance Specifications, the 2025–Present KTM 990 RC R (chassis VBKTU043/LC8c-RCR) requires 2.9 L (3.06 US qt) of SAE 10W-50 (JASO MA2, Motorex Power Synt 4T 10W-50 Full Synthetic) engine oil for a drain-only change and 3.2 L (3.38 US qt) with filter service (60038015000 / HF155 (+ Oil Screens)). Standard solo cold tire pressure is 250 kPa / 2.50 bar / 36 PSI front (120/70 ZR17) and 250 kPa / 2.50 bar / 36 PSI rear (180/55 ZR17), paired with 2× NGK LMAR9AI-10 spark plug(s) and a YTZ10S / YTZ14S battery.
Drain only: 2.9 L (3.06 US qt)
R 250 kPa (2.50 bar)
Est. Range: ~328 km (204 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-50 · JASO MA2 · Motorex Power Synt 4T 10W-50 Full Synthetic |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 2.9 L (3.06 US qt) • With filter/strainer: 3.2 L (3.38 US qt) • Complete dry overhaul: 3.6 L (3.80 US qt) |
| OEM Oil Filter Code & Type | 60038015000 / HF155 (+ Oil 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: 120/70 ZR17 · Rear: 180/55 ZR17 (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 250 kPa / 2.50 bar / 36 PSI Rear: 250 kPa / 2.50 bar / 36 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 250 kPa / 2.50 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| OEM Spark Plug & Quantity | NGK LMAR9AI-10 × 2 (Gap: 1.0 mm) |
| OEM Battery Code & Rating | YTZ10S / YTZ14S (12V 8.6–11.2Ah MF AGM) |
| Final Drive Maintenance | 525 Heavy-Duty X-Ring Chain — Maintain 25–35 mm slack and 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 | 947 cc · 128 hp @ 9,500 rpm · 103 N·m (76.0 lb-ft) @ 7,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 845 mm (33.3 in) · 195 kg (430 lbs) |
| Fuel Tank & Est. Real-World Range | 16 L (4.2 US gal) · ~20.5 km/L → ~328 km (204 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 15,000 km / 15,000 km • Air Filter / Spark Plug: 15,000 km / 30,000 km • Valve Clearance Check: 30,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
KTM long-awaited street-legal supersport comeback packing a 128 hp 947cc LC8c twin, RC16-derived wind-tunnel winglets, 8.8-inch TFT, and Brembo HyPure calipers.
Oil & Clutch Mechanical Engineering Note
KTM/Husqvarna LC8c parallel-twin (790/890/990, Norden 901) and LC8 V-twin (1190/1290/1390) semi-dry-sump family requiring SAE 10W-50 JASO MA2 and mesh screen service.