KTM 250 SX (2020) — Specs
Identity
Manufacturer: KTM
Model: 250 SX
Category: MX-Offroad
Type: MX-Offroad
Years: 2020 → 2020
Engine
Displacement (cc): 249
Cylinders: 1
Torque (Nm): 50
Dimensions
Overall length: 2185 mm
Overall width: 825 mm
Overall height: 1280 mm
Wheelbase: 1490 mm
Ground clearance: 370 mm
Weight (kg): 96
Seat height (mm): 950
Tank (L): 7.5
Tires
Front tire: 80/100-21
Rear tire: 110/90-19
Drivetrain
Drive chain: 428 chain
Ignition
Spark plug: NGK BR8EG
Plug gap: 0.6 mm
Fluids & Filters
Engine oil: API TC 2-stroke (premix 1:60)
Oil filter: Hiflofiltro HF655
Air filter: Hiflofiltro HFA6101
Brake fluid: DOT 4
Service
Battery: YTX5L-BS
Service interval (km): 3000
Service interval (months): 12
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 3,000 km or 12 months, whichever comes first. Brake fluid: DOT 4. Chain: chain. Tire size: front 80/100-21, rear 110/90-19. 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
- OEM OEM recommended engine oil
- 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 HF655
- Premium Hiflofiltro HF655
- Premium K&N KN-655
Air filter
Spec: Hiflofiltro HFA6101
- Standard Hiflofiltro HFA6101
Spark plug
Front brake pads
Spec: OEM front pad (EBC equivalent: FA181HH)
- Premium EBC FA181HH
- Standard EBC FA181 (organic)
Rear brake pads
Spec: OEM rear pad (EBC equivalent: FA192HH)
- Premium EBC FA192HH
- Standard EBC FA192 (organic)
Drive chain
Spec: chain
- OEM OEM chain (pitch 520 (or 428 for some commuter 250s))
Front tire
Spec: 80/100-21
- OEM OEM 80/100-21
Rear tire
Spec: 110/90-19
- OEM OEM 110/90-19
Battery
Spec: OEM battery: Yuasa YTX5L-BS
Brake fluid
Spec: DOT 4
- Standard TotalEnergies HBF4
Coolant
Service interval
Spec: 3 000 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
- OEM 2-stroke engine — no valve check needed
Suspension
Spec: 48 mm USD fork
- OEM Fork: 48 mm USD fork
