Kawasaki ZEPHYR 550 (1991–1994) — Specs
Identity
Manufacturer: Kawasaki
Model: ZEPHYR 550
Category: Motorcycle
Type: Motorcycle
Years: 1991 → 1994
Engine
Displacement (cc): 554
Cylinders: 4
Power (hp): 50
Power (kW): 37
Torque (Nm): 47
Dimensions
Overall length: 2150 mm
Overall width: 810 mm
Overall height: 1180 mm
Wheelbase: 1450 mm
Ground clearance: 155 mm
Weight (kg): 199
Seat height (mm): 770
Tank (L): 15
Tires
Front tire: 110/80-17
Rear tire: 150/70-17
Front pressure (bar): 2
Rear pressure (bar): 2.25
Drivetrain
Drive chain: 520 chain, 106 links
Sprockets (front / rear): 16 / 38
Ignition
Spark plug: NGK DR9EA
Plug gap: 0.7 mm
Fluids & Filters
Engine oil: SAE10W-40
Engine oil (with filter, L): 2.7
Engine oil (without filter, L): 2.5
Oil filter: Hiflofiltro HF401
Air filter: Hiflofiltro HFA2705
Brake fluid: DOT 4
Fuel consumption
Estimated range: ~312 km on a full tank (15.0 L)
Service
Battery: YTX12-BS
Service interval (km): 6000
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 6,000 km or 12 months, whichever comes first. Valve clearance check every 24,000 km. Valve clearance — intake cold 0.10-0.20 mm, exhaust cold 0.15-0.25 mm. Engine oil: oil grade SAE10W-40, 2.7 L with filter change, 2.5 L without filter change. Spark plug: NGK DR9EA (gap 0.7 mm). Brake fluid: DOT 4. Chain: 106 links, sprockets 16/38 teeth. Tire pressure: front 2 bar, rear 2.25 bar (cold). Tire size: front 110/80-17, rear 150/70-17. 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, 2.7 L (with filter), 2.5 L (without filter)
- OEM OEM recommended engine oil (SAE 10W-40)
- Premium Motul 7100 4T (100% Synthetic, Ester)
- Premium Motul 5100 4T Technosynthese (Semi-Synthetic)
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 (Synthetic)
- Standard Elf Moto 4 Tech (Semi-Synthetic)
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
Spec: Hiflofiltro HF401
- Premium Hiflofiltro HF401
- Premium K&N KN-401
Air filter
Spec: Hiflofiltro HFA2705
- Standard Hiflofiltro HFA2705
Spark plug
Spec: NGK DR9EA, gap 0.7 mm
- OEM NGK DR9EA
- Premium NGK DR9EIX
- Standard NGK DR9EA
Front brake pads
Spec: OEM front pad (EBC equivalent: FA231HH)
- Premium EBC FA231HH
- Standard EBC FA231 (organic)
Rear brake pads
Spec: OEM rear pad (EBC equivalent: FA192HH)
- Premium EBC FA192HH
- Standard EBC FA192 (organic)
Drive chain
Spec: 106 links | Sprockets 16/38 teeth / 106 links
Front tire
Spec: 110/80-17, 2.0 bar
- OEM OEM 110/80-17
Rear tire
Spec: 150/70-17, 2.25 bar
- OEM OEM 150/70-17
Battery
Spec: OEM battery: Yuasa YTX12-BS
- Premium Yuasa YTX12-BS or YTZ10S (typical 500-750cc)
Brake fluid
Spec: DOT 4
- Standard TotalEnergies HBF4
Coolant
Service interval
Spec: 6 000 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 Intake clearance: cold 0.10-0.20 mm
- OEM Exhaust clearance: cold 0.15-0.25 mm
Suspension
Spec: 39 mm telescopic fork / 412 ml SAE 15W
- OEM Fork: 39 mm telescopic fork
- OEM Fork oil grade: 412 ml SAE 15W
