Triumph Bonneville Speedmaster (1200 HT) — OEM Fluid, Tire Pressure & Maintenance Specs
1,200cc Liquid-Cooled 270° Parallel-Twin High-Torque (Forward Controls & 2-Up British Cruiser) · Source: Triumph Bonneville Speedmaster (1200 HT) (2018–Present) Official Owner’s Manual Maintenance Specifications
According to the Triumph Bonneville Speedmaster (1200 HT) (2018–Present) Official Owner’s Manual Maintenance Specifications, the 2018–Present Triumph Bonneville Speedmaster (1200 HT) (chassis DV02/DV05) requires 3.2 L (3.38 US qt) of SAE 10W-40 (JASO MA2, API SH or higher (Castrol Power 1)) engine oil for a drain-only change and 3.4 L (3.59 US qt) with filter service (T1218001 / HF204). Standard solo cold tire pressure is 221 kPa / 2.21 bar / 32 PSI front (130/90 B16 M/C 73H) and 262 kPa / 2.62 bar / 38 PSI rear (150/80 R16 M/C 71V), paired with 2× NGK LMAR8A-9 spark plug(s) and a YTX12-BS battery.
Drain only: 3.2 L (3.38 US qt)
R 262 kPa (2.62 bar)
Est. Range: ~252 km (157 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-40 (Alt: SAE 10W-50) · JASO MA2 · API SH or higher (Castrol Power 1) |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 3.2 L (3.38 US qt) • With filter/strainer: 3.4 L (3.59 US qt) • Complete dry overhaul: 3.8 L (4.02 US qt) |
| OEM Oil Filter Code & Type | T1218001 / HF204 |
| 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: 130/90 B16 M/C 73H · Rear: 150/80 R16 M/C 71V (Tube-Type Spoke Rim) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 221 kPa / 2.21 bar / 32 PSI Rear: 262 kPa / 2.62 bar / 38 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 221 kPa / 2.21 bar / 32 PSI Rear: 289 kPa / 2.89 bar / 42 PSI |
| OEM Spark Plug & Quantity | NGK LMAR8A-9 × 2 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTX12-BS (12V 10.0Ah MF AGM) |
| Final Drive Maintenance | 525 Heavy-Duty X-Ring Chain — Maintain 25–35 mm slack and lubricate regularly |
| Brake Fluid & Coolant | DOT 4 · OAT ethylene-glycol coolant for aluminum radiators (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 1200 cc · 78 hp @ 6,100 rpm · 106 N·m (78.2 lb-ft) @ 4,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 705 mm (27.8 in) · 263 kg (580 lbs) |
| Fuel Tank & Est. Real-World Range | 12 L (3.2 US gal) · ~21 km/L → ~252 km (157 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
Built on the Bobber’s hardtail-look chassis with a 2-up rear subframe, twin front Brembo discs, and swept-back beach bars; upgraded to 47 mm Showa forks in 2021.
Oil & Clutch Mechanical Engineering Note
Heavy two-up cruiser duty on the 1200 HT engine calls for 3.4 L of SAE 10W-40 or 10W-50 JASO MA2 synthetic oil and OEM spin-on filter T1218001.
Garage Wrenching Gotchas
- Shares the Bobber’s split twin-airbox layout behind the side panels—always order two air filter elements for every 16,000 km service.
- Lacks a factory centerstand and sits low; use a wheel chock or paddock stand to hold the bike perfectly upright when checking the oil sight glass.
5. Frequently Asked Questions (FAQ)
What oil volume, JASO grade, and oil filter code does the Triumph Bonneville Speedmaster (1200 HT) (2018–Present) require?
Because its wet multi-plate clutch shares engine oil with the gearbox, run SAE 10W-40 (JASO MA2) at 3.2 L (3.38 US qt) drain-only and 3.4 L (3.59 US qt) with filter (T1218001 / HF204).
How do you accurately check the oil level on the Bonneville Speedmaster (1200 HT), 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 25 N·m with a new crush washer. Factory oil change intervals are every 16,000 km, with valve clearance inspection every 32,000 km.
What are the cold tire pressures, puncture repair type, seat height, and range of the Bonneville Speedmaster (1200 HT)?
Equipped with 130/90 B16 M/C 73H front and 150/80 R16 M/C 71V rear tube-type rims (mushroom/string plugs will not seal—carry spare inner tubes), set cold tire pressures to 32 / 38 PSI (221/262 kPa) solo or 32 / 42 PSI loaded. Seat height is 705 mm (27.8 in) at 263 kg wet weight, delivering ~252 km per 12 L tank.