KTM 250 EXC-F (2021) — Specs
Identity
Manufacturer: KTM
Model: 250 EXC-F
Category: Off-Road Bike
Type: Off-Road Bike
Years: 2021 → 2021
Engine
Displacement (cc): 250
Cylinders: 1
Torque (Nm): 27
Dimensions
Overall length: 2275 mm
Overall width: 820 mm
Overall height: 1290 mm
Wheelbase: 1485 mm
Ground clearance: 350 mm
Weight (kg): 103
Seat height (mm): 960
Tank (L): 9.2
Tires
Front tire: 90/90-21
Rear tire: 140/80-18
Front pressure (bar): 1
Rear pressure (bar): 1
Ignition
Spark plug: NGK CR9EIA-9
Plug gap: 0.9 mm
Fluids & Filters
Engine oil: SAE 10W-50, JASO MA2
Engine oil (with filter, L): 1
Oil filter: Hiflofiltro HF652
Air filter: Hiflofiltro HFA6101
Brake fluid: DOT 4
Service
Battery: YTX5L-BS
Service interval (km): 6000
Service interval (months): 12
Valve check (km): 12000
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 12,000 km. Brake fluid: DOT 4. Chain: chain 520. Tire pressure: front 1 bar, rear 1 bar (cold). Tire size: front 90/90-21, rear 140/80-18. 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: SAE 10W-50, 1.2 L (with filter)
- 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 HF652
- Premium Hiflofiltro HF652
- Premium K&N KN-652
Air filter
Spec: Hiflofiltro HFA6101
- Standard Hiflofiltro HFA6101
Spark plug
Spec: NGK LKAR8AI-9, gap 0.8-0.9 mm
- OEM NGK LKAR8AI-9
- Premium NGK LKAR8AI-9
- Standard NGK LKAR8AI-9
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 520 | chain 520
- OEM OEM chain (pitch 520 (or 428 for some commuter 250s))
Front tire
Spec: 90/90-21, 1.0 bar
- OEM OEM 90/90-21
Rear tire
Spec: 140/80-18, 1.0 bar
- OEM OEM 140/80-18
Battery
Spec: OEM battery: Yuasa YTX5L-BS
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: 12 000 km
Suspension
Spec: 48 mm USD fork
- OEM Fork: 48 mm USD fork
