Triumph Speed 400 (TR-Series) — OEM Fluid, Tire Pressure & Maintenance Specs
398.15cc Liquid-Cooled Single-Cylinder DOHC 4-Valve TR-Series (DLC Finger Followers + Slip/Assist) · Source: Triumph Speed 400 Official Owner’s Handbook Technical Specifications
According to the Triumph Speed 400 Official Owner’s Handbook Technical Specifications, the 2024–Present Triumph Speed 400 (TR-Series) (chassis SMTX10/TR40) requires 1.85 L (1.95 US qt) of SAE 10W-50 (JASO MA2, API SN Fully Synthetic) engine oil for a drain-only change and 2 L (2.11 US qt) with filter service (JG571014 / T1218001-TR (Paper Element)). Standard solo cold tire pressure is 180 kPa / 1.80 bar / 26 PSI front (110/70 R17 M/C 54H) and 230 kPa / 2.30 bar / 33 PSI rear (150/60 R17 M/C 66H), paired with 1× Bosch VR6NEU spark plug(s) and a ETZ9-BS / YTZ10S battery.
Drain only: 1.85 L (1.95 US qt)
R 230 kPa (2.30 bar)
Est. Range: ~371 km (231 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-40 (표준 기온 허용)) · JASO MA2 · API SN Fully Synthetic |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 1.85 L (1.95 US qt) • With filter/strainer: 2 L (2.11 US qt) • Complete dry overhaul: 2.25 L (2.38 US qt) |
| OEM Oil Filter Code & Type | JG571014 / T1218001-TR (Paper Element) |
| 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 | 25 N·m (18.4 lb-ft / 2.55 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 110/70 R17 M/C 54H · Rear: 150/60 R17 M/C 66H (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 180 kPa / 1.80 bar / 26 PSI Rear: 230 kPa / 2.30 bar / 33 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 180 kPa / 1.80 bar / 26 PSI Rear: 230 kPa / 2.30 bar / 33 PSI |
| OEM Spark Plug & Quantity | Bosch VR6NEU × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | ETZ9-BS / YTZ10S (12V 8.0Ah Sealed MF AGM) |
| Final Drive Maintenance | 520 X-Ring Sealed Chain (15T/43T) — Maintain 20–30 mm vertical slack |
| Brake Fluid & Coolant | DOT 4 · Triumph D2053 OAT Silicate-Free Coolant (~1.1 L) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 398 cc · 40 hp @ 8,000 rpm · 37.5 N·m (27.7 lb-ft) @ 6,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 790 mm (31.1 in) · 170 kg (375 lbs) |
| Fuel Tank & Est. Real-World Range | 13 L (3.4 US gal) · ~28.5 km/L → ~371 km (231 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 16,000 km / 16,000 km • Air Filter / Spark Plug: 16,000 km / 32,000 km • Valve Clearance Check: 32,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Debuting globally for 2024, the Speed 400 inaugurated Triumph’s liquid-cooled TR-series single. While sharing 100% of its engine internals and JG571014 oil filter with the Scrambler 400 X, Speed 400 runs 17-inch street radial tires, shorter suspension travel, and a 790 mm seat height.
Oil & Clutch Mechanical Engineering Note
Triumph engineered the 89 mm-bore TR-series single with a recessed paper oil element (JG571014) backed up by dual removable magnetic mesh oil screens in the lower crankcase. A filter-change service takes an exact 2.0 L (2.11 US qt) of full-synthetic SAE 10W-50 JASO MA2 oil.
Garage Wrenching Gotchas
- Do not just pull one drain bolt—remove and clean BOTH magnetic mesh strainer screens alongside the right-side JG571014 paper filter element so break-in swarf never restricts oil pickup.
- Notice the light-chassis factory cold tire pressures: just 180 kPa (26 PSI) front and 230 kPa (33 PSI) rear! Over-inflating the front to 36 PSI ruins front-end compliance over urban bumps.
5. Frequently Asked Questions (FAQ)
Does the Triumph Speed 400 really have a 16,000 km oil change interval?
Triumph’s official handbook lists 16,000 km (10,000 mi) or 12 months, though riders logging stop-and-go city heat on a high-revving 2.0 L single commonly refresh 10W-50 oil every 5,000–6,000 km.
Are the Triumph Speed 400 wheels and tires factory tubeless?
Yes—both 17-inch cast aluminum alloy wheels run tubeless radial tires from the factory, allowing quick roadside plug-and-pump puncture repairs.
What is the valve check interval on the Triumph Speed 400?
Thanks to DLC-coated finger followers over shim buckets, valve clearance inspection is only scheduled every 32,000 km (20,000 miles).