NHX 125

Black / Blue / White

NHX 125





SYM NHX 125 is designed for an urban commuter who is full of street-fighter spirit.


The lower riding posture and the muscular look gives you a more aggressive stance when conquering the urban sprawl.
To achieve outstanding handling, the SYM NHX  125 features a perimeter frame, centred-suspension and front & rear brake disc with CBS.

Full-LED lighting, 2A USB charger and LCD meter on SYM NHX  125 make it into a premium street bike.
With 50/50 weight distribution, SYM NHX  125 is steering in more agile and quick-responsive performance.
SYM NHX  125 also features a new lightweight aluminium rim that has better stiffness, and the equipped tyres make for good performance on road-gripping-ability.


Overall Length 2040 mm

Overall Width 745 mm

Overall Height 1080 mm

Wheel Base 1400 mm

Weight Distribution (curb weight)  front 68 kg

                                                              rear 75 kg

                                                              total 143 kg

Weight Distribution (max allow weight)  front 101 kg

                                                                       rear 192 kg

                                                                       total 293 kg


Type 4-stroke engine

Cylinder Arrangement single cylinder

Bore × Stroke φ56.5 ×49.5 mm

Displacement 124.1 cm3

Compression Ratio 10.1±0.2:1


software identification No. M4L

Calibration verfication No. 4E444300

Valve Train O.H.C.

Tensioner auto-tensioner

Maximum Horsepower 7.5 kw

8500 rpm

Maximum Torque 9.5 Nm

6500 rpm

Lubrication System forced circulation & splashing

Fuel Required unlead gasoline

Exhaust Emission – Level Euro 4

                                  CO <1.14 g/km

                                  HC < 0.38 g/km

                                  Nox < 0.07 g/km

Noise Emission <74 dB

Fuel consumption 2.3 l/100km

CO2 emission 52 g/km

Reference and/or setting ranges Inlet :0.05 mm

Exhaust:0.15 mm

Engine Oil Capacity First 1000 ml

Change 850 ml


Maximun Speed 99 km/h

Maximum hill-starting ability 53.1 %slope


Type diamond

Material steel

Suspension Type front telescope fork

                              rear single swing

Suspension Travel front 120 mm

                                 rear 35.5 mm

Rim Material front aluminum

                        rear aluminum

Rim Size front 2.5-17

               rear 3.5-17

Tire Type front tubeless

                 rear tubeless

Tire Size front 110/70-17

                 rear 130/70-17

Brake System CBS

Brake Type front disk, non-asbestos pad

                    rear disk, non-asbestos pad

Brake Diameter front φ260 mm

                            rear φ222 mm

Brake Swept Arc front 18.30×2 cm2

                              rear 14.70×2 cm2

Fuel Capacity 11 L


Clutch wet multi-plate

Transmission gear

Primary Reduction 3.333

Gear Ratio

I 2.769

2 1.882

3 1.273

4 1.13

5 0.96

Final Reduction 3.267


Ignition System Transistorized coil ignition

Starting System electrical starter

Alternator 154 W

Battery Capacity 12V/6Ah,around 2.6 kg

Speedometer Scale 0 ~ 199 (digit) km/h

Horn 87~112 dB

Fuse 15A×3 and 20A×1

Spark Plug DPR8EA-9

Headlight deep/main beam 12V 14W(1 LED)/25W(1 LED

                  Position Lamps 12 V 1.5 W (6 LEDs) × 2

Taillight Stoplight 13.5 V 5.5W (15 LEDs×) 1

              Position Lamps 13.5 V 2.5W (15 LEDs×) 1

Turn Signal Light front 13.5V 1.8W(3 LEDs) × 2

                              rear 13.5V 1.8W(3 LEDs) × 2

Reflex Reflector side 2

                             rear 1