Triumph Rocket 3 GT / Storm GT (2500cc) — OEM Fluid, Tire Pressure & Maintenance Specs
2,458cc Liquid-Cooled Longitudinal Inline-3 Dry-Sump (Forward-Control Grand Touring Muscle Cruiser) · Source: Triumph Rocket 3 GT / Storm GT (2500cc) (2020–Present) Official Owner’s Manual Maintenance Specifications
According to the Triumph Rocket 3 GT / Storm GT (2500cc) (2020–Present) Official Owner’s Manual Maintenance Specifications, the 2020–Present Triumph Rocket 3 GT / Storm GT (2500cc) (chassis Y101/Y102/SMTY102) requires 4.4 L (4.65 US qt) of SAE 15W-50 (JASO MA2, API SH+ Semi/Full Synthetic (Castrol Power 1 15W-50)) engine oil for a drain-only change and 4.65 L (4.91 US qt) with filter service (T1218001 / HF204). Standard solo cold tire pressure is 290 kPa / 2.90 bar / 42 PSI front (150/80 R17 V) and 290 kPa / 2.90 bar / 42 PSI rear (240/50 R16 V), paired with 6× NGK DPR7EA-9 (Twin-Spark 6 Plugs!) spark plug(s) and a YTX20CH-BS battery.
Drain only: 4.4 L (4.65 US qt)
R 290 kPa (2.90 bar)
Est. Range: ~263 km (163 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 15W-50 (Alt: SAE 10W-50) · JASO MA2 · API SH+ Semi/Full Synthetic (Castrol Power 1 15W-50) |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 4.4 L (4.65 US qt) • With filter/strainer: 4.65 L (4.91 US qt) • Complete dry overhaul: 5.2 L (5.49 US qt) |
| OEM Oil Filter Code & Type | T1218001 / HF204 |
| Correct Oil Level Check Method | Dry-sump oil tank — warm engine to operating temperature and check oil tank/frame dipstick immediately after shutdown per OEM procedure (never top up cold) |
| Oil Drain Bolt Torque | 25 N·m (18.4 lb-ft / 2.55 kgf·m) — Use fresh crush washer |
| Final Drive / Bevel Gear Oil | 170 ml (0.17 L) — SAE 75W-90 Fully Synthetic Hypoid Gear Oil (170 ml shaft bevel box) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 150/80 R17 V · Rear: 240/50 R16 V (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 290 kPa / 2.90 bar / 42 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 290 kPa / 2.90 bar / 42 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| OEM Spark Plug & Quantity | NGK DPR7EA-9 (Twin-Spark 6 Plugs!) × 6 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTX20CH-BS (12V 18.0Ah High-CCA Sealed AGM) |
| Final Drive Maintenance | Single-Sided Cast Aluminum Shaft Drive — 170 ml SAE 75W-90 synthetic hypoid oil |
| 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 | 2458 cc · 182 hp @ 7,000 rpm · 225 N·m (166.0 lb-ft) @ 4,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 750 mm (29.5 in) · 320 kg (705 lbs) |
| Fuel Tank & Est. Real-World Range | 18 L (4.8 US gal) · ~14.6 km/L → ~263 km (163 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 / 20,000 km • Valve Clearance Check: 20,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Grand-touring twin to the Rocket 3 R featuring 3-position forward foot controls, swept-back bars, lower 750 mm seat, and backrest; 2024 Storm GT rose to 182 PS / 225 N·m.
Oil & Clutch Mechanical Engineering Note
Integrated dry-sump crankcase requires draining ALL THREE lower sump plugs for a 4.65 L SAE 15W-50 JASO MA2 refill (w/ HF204), plus 170 ml shaft bevel oil.
Garage Wrenching Gotchas
- Never top up oil cold—dry-sump drain-back makes a cold tank read artificially low; idle to operating temperature first per factory manual.
- Twin-spark triple head takes SIX NGK DPR7EA-9 plugs, and both massive 150/80-17 & 240/50-16 tires require a firm 42 PSI (290 kPa) cold.
5. Frequently Asked Questions (FAQ)
What oil volume, JASO grade, and oil filter code does the Triumph Rocket 3 GT / Storm GT (2500cc) (2020–Present) require?
Because its wet multi-plate clutch shares engine oil with the gearbox, run SAE 15W-50 (JASO MA2) at 4.4 L (4.65 US qt) drain-only and 4.65 L (4.91 US qt) with filter (T1218001 / HF204). Also service final drive 170 ml.
How do you accurately check the oil level on the Rocket 3 GT / Storm GT (2500cc), and what are its service intervals?
Because this dry-sump engine scavenges oil into a separate tank while running, always measure immediately after a full warm-up; checking stone-cold after sitting misleads riders into massive overfilling. 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 20,000 km.
What are the cold tire pressures, puncture repair type, seat height, and range of the Rocket 3 GT / Storm GT (2500cc)?
Fitted with 150/80 R17 V front and 240/50 R16 V rear tubeless rims (compatible with roadside plug kits), set cold tire pressures to 42 / 42 PSI (290/290 kPa) solo or 42 / 42 PSI loaded. Seat height is 750 mm (29.5 in) at 320 kg wet weight, delivering ~263 km per 18 L tank.