Ducati ST4S (2001–2003) — Specs
Identity
Manufacturer: Ducati
Model: ST4S
Category: Motorcycle
Type: Motorcycle
Years: 2001 → 2003
Engine
Displacement (cc): 996
Cylinders: 2
Power (hp): 117
Power (kW): 86
Torque (Nm): 89
Dimensions
Overall length: 2240 mm
Overall width: 870 mm
Overall height: 1280 mm
Wheelbase: 1510 mm
Ground clearance: 150 mm
Weight (kg): 233
Seat height (mm): 820
Tank (L): 21
Tires
Front tire: 120/70 ZR17
Rear tire: 180/55 ZR17
Front pressure (bar): 2.1
Rear pressure (bar): 2.2
Drivetrain
Drive chain: 525 chain, 102 links
Sprockets (front / rear): 15 / 43
Ignition
Spark plug: NGK DCPR9EIX
Plug gap: NACH HERST.specs
Fluids & Filters
Engine oil: SAE10W-40
Engine oil (with filter, L): 3.4
Oil filter: OEM oil filter
Air filter: OEM air filter
Coolant (L): 3.5
Brake fluid: DOT 4
Fuel consumption
Estimated range: ~381 km on a full tank (21.0 L)
Service
Battery: OEM battery specification
Service interval (km): 10000
Service interval (months): 12
Valve check (km): 24000
Parts and consumables for this motorcycle
Data is gathered with care, but without guarantee. Always confirm critical information with your dealer or workshop.
Service notes
Service interval: every 10,000 km or 12 months, whichever comes first. Valve clearance check every 24,000 km. Engine oil: oil grade SAE10W-40, 3.4 L with filter change. Spark plug: NGK DCPR9EIX (gap NACH HERST.specs). Brake fluid: DOT 4. Coolant capacity: 3.5 L. Chain: 102 links, sprockets 15/43 teeth. Tire pressure: front 2.1 bar, rear 2.2 bar (cold). Tire size: front 120/70 ZR17, rear 180/55 ZR17. Always confirm critical values with the workshop manual or an authorised dealer.
OEM and quality aftermarket parts that fit this bike. Always confirm with your dealer before ordering.
Engine oil
Spec: SAE10W-40, 3.4 L (with filter)
- OEM OEM recommended engine oil (SAE 10W-40)
- Premium Motul 7100
- Premium Motul 5100
Which Motul for this bike?
| Motul 7100 4T ✓ | Motul 5100 4T | |
|---|---|---|
| Product | Motul 7100 4T — 100% fully synthetic | Motul 5100 4T — semi-synthetic |
| Best for | Sport, Naked, Adventure (600cc+), track | Standard, Cruiser, Scooter, daily use |
| RPM protection | Excellent — ester base, stable under load | Good — for normal riding conditions |
- Standard Repsol Moto Racing 4T
- Standard Elf Moto 4 Tech
Fully Synthetic vs Semi-Synthetic
| Fully Synthetic | Semi-Synthetic | |
|---|---|---|
| Base oil | 100% chemical synthesis (ester or PAO) | Mineral oil + synthetic additives |
| Heat resistance | Excellent — stable at extreme heat & RPM | Good — suitable for normal temperatures |
| Cold start | Better — reaches engine faster when cold | Good — adequate for normal climates |
| Change interval | Longer (up to 10,000 km) | Shorter (5,000–7,000 km typical) |
| Price | Higher | Lower |
Oil filter
Air filter
Spark plug
Spec: NGK DCPR9EIX, gap NACH HERST.specs
- OEM NGK DCPR9EIX
- Premium NGK DCPR9EIX
- Standard NGK DCPR9EIX
Front brake pads
Rear brake pads
Drive chain
Spec: 102 links | Sprockets 15/43 teeth / 102 links
Front tire
Spec: 120/70 ZR17, 2.1 bar
- OEM OEM front: 120/70 ZR17
Rear tire
Spec: 180/55 ZR17, 2.2 bar
- OEM OEM rear: 180/55 ZR17
Battery
- Premium Yuasa YTX14-BS or YTZ12S (typical 750-1000cc)
Brake fluid
Spec: DOT 4
- Standard TotalEnergies HBF4
Coolant
Spec: 3.50 L coolant capacity
Service interval
Spec: 10 000 km / 12 months
- OEM Engine oil + oil filter change
- OEM Air filter inspection
- OEM Spark plug check
- OEM Brake fluid replacement: every 2 years
Valve check
Spec: 24 000 km
- OEM Desmodromic valves — specialist service
Suspension
Spec: 43 mm USD fork / 492 ml SAE 7.5W
- OEM Fork: 43 mm USD fork
- OEM Fork oil grade: 492 ml SAE 7.5W
