Indian Roadmaster Dark Horse (Thunderstroke 116) — OEM Fluid, Tire Pressure & Maintenance Specs
1,890cc Air-Cooled 49° V-Twin Pushrod Thunderstroke 116 · Source: Indian Roadmaster Dark Horse (Thunderstroke 116) (2020–Present) Official Owner’s Manual Maintenance Specifications
According to the Indian Roadmaster Dark Horse (Thunderstroke 116) (2020–Present) Official Owner’s Manual Maintenance Specifications, the 2020–Present Indian Roadmaster Dark Horse (Thunderstroke 116) (chassis Cast-Aluminum Full-Dress Dark Horse TS116) requires 5 L (5.28 US qt) of SAE 20W-40 (JASO MA, Indian Thunderstroke 20W-40 Semi/Full Synthetic) engine oil for a drain-only change and 5.2 L (5.49 US qt) with filter service (Indian 2540086 / HF198). Standard solo cold tire pressure is 248 kPa / 2.48 bar / 36 PSI front (130/60B19 61H) and 283 kPa / 2.83 bar / 41 PSI rear (180/60R16 80H), paired with 2× Champion RC10PYPB4 / NGK BKR7EIX spark plug(s) and a YTX20HL-BS / GYZ20HL battery.
Drain only: 5 L (5.28 US qt)
R 283 kPa (2.83 bar)
Est. Range: ~333 km (207 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 20W-40 · JASO MA · Indian Thunderstroke 20W-40 Semi/Full Synthetic |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 5 L (5.28 US qt) • With filter/strainer: 5.2 L (5.49 US qt) • Complete dry overhaul: 5.7 L (6.02 US qt) |
| OEM Oil Filter Code & Type | Indian 2540086 / HF198 |
| Correct Oil Level Check Method | Upright on level ground; screw dipstick ALL THE WAY IN, then remove to read level |
| 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: 130/60B19 61H · Rear: 180/60R16 80H (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 248 kPa / 2.48 bar / 36 PSI Rear: 283 kPa / 2.83 bar / 41 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 248 kPa / 2.48 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| OEM Spark Plug & Quantity | Champion RC10PYPB4 / NGK BKR7EIX × 2 (Gap: 0.9 mm) |
| OEM Battery Code & Rating | YTX20HL-BS / GYZ20HL (12V 18–20Ah Heavy-Duty AGM) |
| Final Drive Maintenance | Carbon/Aramid Reinforced Secondary Belt — Inspect belt deflection and pulley debris |
| Brake Fluid & Coolant | DOT 4 · Air/Oil-Cooled Engine (No liquid coolant) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 1890 cc · 92 hp @ 4,500 rpm · 168 N·m (123.9 lb-ft) @ 2,900 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 673 mm (26.5 in) · 403 kg (888 lbs) |
| Fuel Tank & Est. Real-World Range | 20.8 L (5.5 US gal) · ~16 km/L → ~333 km (207 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 800 km • Engine Oil / Filter: 8,000 km / 8,000 km • Air Filter / Spark Plug: 24,000 km / 48,000 km • Valve Clearance Check: 48,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Launched in 2020, the Roadmaster Dark Horse mates the streamlined fairing, 19-inch wheel, and blacked-out finishes of the Chieftain Dark Horse with vented lowers and a power-locking trunk.
Oil & Clutch Mechanical Engineering Note
Its blacked-out Thunderstroke 116 semi-dry sump drains via dual 20 Nm crankcase plugs and takes 5.2 L of SAE 20W-40 JASO MA with filter 2540086.