Ducati Monster / Monster+ (937) — OEM Fluid, Tire Pressure & Maintenance Specs
937cc Liquid-Cooled 90° L-Twin Desmodromic 4-Valve Testastretta 11° (Hydraulic Wet Slipper Clutch) · Source: Ducati Monster / Monster+ (Testastretta 11° 937cc) Official Owner’s Manual Specifications
According to the Ducati Monster / Monster+ (Testastretta 11° 937cc) Official Owner’s Manual Specifications, the 2021–Present Ducati Monster / Monster+ (937) (chassis ZDMM400AA/4M) requires 2.9 L (3.06 US qt) of SAE 15W-50 (JASO MA2, API SN Synthetic (Shell Advance Ducati 15W-50)) engine oil for a drain-only change and 3.1 L (3.28 US qt) with filter service (44440035A / HF153). Standard solo cold tire pressure is 230 kPa / 2.30 bar / 33 PSI front (120/70 ZR17 M/C (58W)) and 250 kPa / 2.50 bar / 36 PSI rear (180/55 ZR17 M/C (73W)), paired with 2× NGK MAR9A-J spark plug(s) and a YT12B-BS battery.
Drain only: 2.9 L (3.06 US qt)
R 250 kPa (2.50 bar)
Est. Range: ~269 km (167 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 15W-50 · JASO MA2 · API SN Synthetic (Shell Advance Ducati 15W-50) |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 2.9 L (3.06 US qt) • With filter/strainer: 3.1 L (3.28 US qt) • Complete dry overhaul: 3.4 L (3.59 US qt) |
| OEM Oil Filter Code & Type | 44440035A / HF153 |
| 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 M/C (58W) · Rear: 180/55 ZR17 M/C (73W) (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 230 kPa / 2.30 bar / 33 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 MAR9A-J × 2 (Gap: 0.8 mm) |
| OEM Battery Code & Rating | YT12B-BS (12V 10.0Ah Sealed MF AGM) |
| Final Drive Maintenance | 520 Z-Ring Sealed Chain (15T/43T, 108 links) — Maintain 38–40 mm slack on sidestand |
| Brake Fluid & Coolant | DOT 4 · ENI Agip Permanent Spezial OAT Premix Coolant (~2.0 L) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 937 cc · 111 hp @ 9,250 rpm · 93 N·m (68.6 lb-ft) @ 6,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 820 mm (32.3 in) · 188 kg (414 lbs) |
| Fuel Tank & Est. Real-World Range | 14 L (3.7 US gal) · ~19.2 km/L → ~269 km (167 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 15,000 km / 15,000 km • Air Filter / Spark Plug: 30,000 km / 30,000 km • Valve Clearance Check: 30,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Introduced in 2021, the Monster 937 replaced the classic steel trellis and 821cc engine with an aluminum front-frame monocoque and the lighter 937cc Testastretta 11° L-Twin, shedding 18 kg. Timing belts, airbox filters, and chassis parts do not interchange with the earlier Monster 821 or air-cooled 797.
Oil & Clutch Mechanical Engineering Note
The 937cc Testastretta 11° pairs external toothed timing belts with Desmodromic valve actuation and a hydraulic servo-assisted wet slipper clutch. Ducati mandates full-synthetic SAE 15W-50 JASO MA2 oil to protect the hotter rear cylinder head and maintain crisp quickshifter and slipper-clutch engagement.
Garage Wrenching Gotchas
- While Desmo valve clearance checks occur every 30,000 km, the toothed rubber timing belts carry a strict 60-month (5-year) calendar expiration regardless of low mileage—never stretch old belts past five years.
- Both the hydraulic clutch and brake masters take DOT 4 fluid (never mineral oil), and during oil changes you should pull and clean the cylindrical crankcase mesh screen alongside the spin-on 44440035A cartridge.
5. Frequently Asked Questions (FAQ)
How much engine oil and which oil filter does the Ducati Monster 937 require?
With a new spin-on oil filter (Ducati OEM 44440035A / Hiflofiltro HF153), refill capacity is approximately 3.1 L (3.28 US qt) of SAE 15W-50 JASO MA2 synthetic oil, verified upright via the crankcase sight glass after warm shutdown.
When is the Desmo valve service and timing belt replacement due on a Monster 937?
Desmodromic opening and closing valve clearances are inspected every 30,000 km (18,000 mi), while timing belts must be replaced at 30,000 km or 60 months (5 years), whichever comes first.
Can the Ducati Monster 937 seat height be lowered using factory parts?
Yes. Thanks to its narrow waist, the stock 820 mm saddle already feels accessible, and Ducati offers an OEM low seat (800 mm) plus a factory-engineered suspension spring lowering kit that drops seat height all the way to 775 mm.