TECHNICAL SPECIFICATIONS

Yamaha YZF-R125 2025–2026 (Europa)

2025–2026 YZF-R125 (2025–2026) EU

125 cc SOHC refrigerado por líquido

MotorDataBook

Key specifications

The essentials of this version at a glance.

310.85 lb
Kerb/curb weight
✓
2.91 US gal
Fuel tank capacity
✓
100/80-17M/C 52S
Front tyre size
✓
140/70-17M/C 66S
Rear tyre size
✓
10W-40
Engine oil viscosity
✓
1 US qt
Engine oil capacity with filter
✓
5 Ah
Battery capacity
✓
API servicio tipo SG o superior, norma JASO MA
Engine oil specification
✓
8 items

Dimensions & Weights

Length
78.35 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-1 Verification: Verified Open document
Width
28.15 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-1 Verification: Verified Open document
Height
45.08 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-1 Verification: Verified Open document
Wheelbase
52.17 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-1 Verification: Verified Open document
Ground clearance
6.3 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-1 Verification: Verified Open document
Kerb/curb weight
310.85 lb ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-1 Verification: Verified Open document
Payload
394.63 lb ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: PDF p. 14 Verification: Verified Open document
Fuel tank capacity
2.91 US gal ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-1 Verification: Verified Open document
1 items

Fuel & Emissions

Minimum octane
90 RON ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 5-25 Verification: Verified Open document
1 items

Brakes

Brake fluid specification
DOT 4 ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: PDF p. 86 Verification: Verified Open document
6 items

Wheels and tyres

Front tyre size
100/80-17M/C 52S ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 8-17 Verification: Verified Open document
Rear tyre size
140/70-17M/C 66S ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 8-17 Verification: Verified Open document
Front tyre pressure - normal load Neumáticos en frío, 1 persona
29.01 psi ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: PDF p. 80 Verification: Verified Open document
Rear tyre pressure - normal load Neumáticos en frío, 1 persona
31.91 psi ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: PDF p. 80 Verification: Verified Open document
Front tyre pressure - full load Neumáticos en frío, 2 personas
29.01 psi ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: PDF p. 80 Verification: Verified Open document
Rear tyre pressure - full load Neumáticos en frío, 2 personas
31.91 psi ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: PDF p. 80 Verification: Verified Open document
3 items

Motorcycle Specific

Drive chain slack minimum
1.18 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 8-22 Verification: Verified Open document
Drive chain slack maximum
1.57 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 8-22 Verification: Verified Open document
Rear axle torque
62.69 lb-ft ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 8-23 Verification: Verified Open document
5 items

Engine & Fluids

Engine oil viscosity
10W-40 ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-1 Verification: Verified Open document
Engine oil specification
API servicio tipo SG o superior, norma JASO MA ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-1 Verification: Verified Open document
Engine oil capacity with filter Cambio de aceite sustituyendo el filtro
1 US qt ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 8-10 Verification: Verified Open document
Engine oil capacity without filter Cambio de aceite sin sustituir el filtro
0.9 US qt ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 8-10 Verification: Verified Open document
Coolant capacity Radiador y circuito completo
0.52 US qt ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-1 Verification: Verified Open document
2 items

Filters & Service Parts

OEM spark plug reference
NGK/MR8E9 ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 8-9 Verification: Verified Open document
Spark plug gap
0.03 – 0.04 in ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 8-9 Verification: Verified Open document
2 items

Electrical & Battery

12 V battery nominal voltage
12 V ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-2 Verification: Verified Open document
Battery capacity
5 Ah ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-2 Verification: Verified Open document
7 items

Lighting

Low beam bulb
LED ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-2 Verification: Verified Open document
High beam bulb
LED ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-2 Verification: Verified Open document
Front indicator bulb
10.0 W ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-2 Verification: Verified Open document
Rear indicator bulb
10.0 W ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-2 Verification: Verified Open document
Brake light bulb
LED ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-2 Verification: Verified Open document
Number plate bulb
5.0 W ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-2 Verification: Verified Open document
Headlamp technology
LED ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 10-2 Verification: Verified Open document
1 items

Torque Specifications

Spark plug torque
9.22 lb-ft ✓
Sources and verification (1)
Primary source ✓ Official Publisher: Yamaha Motor Europe Document: YZF-R125 – Manual del propietario (PBWUF8199SAS) Reference: 8-9 Verification: Verified Open document
1 boxes

Fuses

Fuse box

Caja de fusibles

Location: Bajo el asiento del conductor
Position Fusible principal
Amperage 20
Circuit Alimentación general
Position Fusible de encendido
Amperage 20
Circuit Encendido
Position Fusible del motor del sistema ABS
Amperage 30
Circuit Motor del sistema abs
Position Fusible del solenoide del ABS
Amperage 20
Circuit Solenoide del abs
Position Fusible de la unidad de control del sistema ABS
Amperage 7.5
Circuit Unidad de control del sistema abs
Position Fusible de repuesto
Amperage 7.5
Circuit Repuesto

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