Hyosung GT 250 NAKED (2003–2007) — Specs
Identity
Engine
Dimensions
Tires
Drivetrain
Ignition
Fluids & Filters
Fuel consumption
Service
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. Valve clearance — intake 0.10-0.20 mm cold, exhaust 0.20-0.30 mm cold. Engine oil: oil grade SAE10W-40, API SG, 1.5 L with filter change, 1.45 L without filter change. Spark plug: NGK CR8E (gap 0.7 mm). Brake fluid: DOT 4. Chain: 112 links, sprockets 14/46 teeth. Tire pressure: front 2 bar, rear 2.25 bar (cold). Tire size: front 110/70-17, 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.
- OEM OEM recommended engine oil (SAE 10W-40)
- Premium Motul 7100 4T (100% Synthetic, Ester)
| 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 |
- Premium Hiflofiltro HF131
- OEM NGK CR8E
- Premium NGK CR8EIX
- OEM OEM 110/70-17
- OEM OEM 150/70-17
- OEM Engine oil + oil filter change
- OEM Air filter inspection
- OEM Spark plug check
- OEM Brake fluid replacement: every 2 years
- OEM Intake clearance: 0.10-0.20 mm cold
- OEM Exhaust clearance: 0.20-0.30 mm cold
- OEM Fork: 41 mm USD fork
- OEM Fork oil grade: CA.400 ml SAE 10W
- Premium Yuasa YTX7L-BS or YTX7A-BS (typical 125-250cc)
