South Africa catalogue Prices in ZAR · Sources dated on every model
MotocrossActive

Big Boy RFZ125S

RFZ125S is a South African Big Boy off-road machine using a 125 cc petrol engine, Manual transmission and 2.49 L/100 km recorded fuel use. Its listed price is R17,999; the supplied figures also include 10.62 kW, a 3.2-litre tank and 800 mm seat. Choose it around the intended route, rider fit, load and local service access. Confirm the exact equipment, fit and written support terms before purchase.

Riding characterClosed-course competition

Motocross machines are developed around jumps, loose surfaces and competition use. Service intervals, protective equipment, transport and road-registration status should be checked before purchase.

Best matched to: Motocross tracks, competition practice and race preparation
South Africa price fromR17,999Dealer-advertised vehicle price; final on-road quote may differ.
Max power10.62 kW (14.2 bhp)
Claimed fuel use2.49 L/100 km

✓ Lineup and price checked 1 October 2026 from Midlands Big Boy

Model-specific AfriWheel overview

RFZ125S buyer overview

For a buyer researching RFZ125S, the useful starting point is the job it is meant to do: a dirt-oriented motorcycle for practice days rather than commuting. The current South African listing records R17,999. A sound choice depends on fit, surface, load, energy or fuel planning and support for this exact product.

At 125 cc, this petrol engine gives the model a clear place among Big Boy’s choices. The recorded 10.62 kW and 8.6 Nm are comparison figures; actual work or travel depends on load, surface, maintenance and control feel.

Control comes through Manual and 5 listed ratios, driving the Chain final drive. A handover should cover clutch effort, steering lock, throttle response and loaded behaviour as well as the headline specification.

On paper this product measures 1 × 860 × 800 mm and uses a 1260 mm wheelbase. At 800 mm, read the seat with saddle shape and suspension compression. The listed 180 mm clearance and 132.5 kg mass matter on ramps, tight yards and uneven ground.

The record gives 70-inch and 90-inch wheels, 70/100/19 front rubber and 90/100/16 rear rubber, with Disc front and Disc rear brakes. Those details describe the equipment; a demonstration shows how it turns and stops on the buyer’s surface.

Use the real job to test the fit. Big Boy records 2 occupant(s) and 170 kg maximum payload, so a commercial buyer should plan restraint, route width, turning space and recovery. A road rider should consider passenger comfort and secure luggage.

Big Boy records 2.49 L/100 km and a 3.2-litre tank. Treat that as a comparison measure, not a guarantee: traffic, gradients, wind, load, idling, pressure and maintenance affect weekly fuel use. Confirm fuel, oil, running-in and first-service instructions.

This model makes sense when body style, powertrain, wheel package, carrying limit and price support a defined need. Make the decision around one route or job, then verify handover details.

At the showroom, check mounting height, control reach, steering lock, visibility, brake effort, tyre markings, fluid levels, fasteners and lighting. If it carries a passenger or load, reproduce that use safely.

For this record, the useful comparison line is 2.49 L/100 km and a 3.2-litre tank. The product carries the recorded 2-person seating description and 170 kg payload value where supplied. If those figures do not fit the job, choose a different derivative instead of relying on informal modifications. Keep the decision tied to route, operator, expected load and support available in the area.

The recorded South African listing for RFZ125S is priced at R17,999. Its moto-x role, 2-person seating and 170 kg payload value should be read with the exact dimensions and operating limits shown above.

A price comparison only helps when the products being compared perform the same role. A small road scooter, a cargo derivative and a utility machine can sit near one another in a catalogue while carrying different limits and requiring different storage. Keep the recorded amount beside the equipment list, payload, seating, energy or fuel plan and service route. The lowest number is not automatically the most economical choice if the machine cannot complete the real duty.

Brakes and tyres deserve attention equal to the engine or motor. Confirm the tyre markings, pressure recommendations, wheel condition and brake response on delivery. For a utility product, ask how the permitted load changes stopping distance and how often the working surface damages tyres. For a road machine, make sure the rider understands the controls before carrying a passenger or adding luggage.

Rider fit deserves a physical check. Mount the vehicle, reach both controls, turn the steering from lock to lock and hold it at walking pace. Note whether the seat height, mass and wheelbase feel manageable for the person who will use it every day. If the product is for work, repeat the check with the usual load secured correctly. A specification table prepares the questions; it cannot replace this short demonstration.

The body style sets expectations but does not answer every legal or operating question. A work vehicle may be intended for controlled property, while a road model may still need documents and equipment checked for the buyer’s use. Ask the seller to state the permitted use, seating arrangement and registration position in writing where these affect the decision. Do not infer them from a photograph or a seat shape.

The catalogue position is clearer when the buyer starts with the job rather than the badge. Think about the first and last trip of a normal week, the surface between them, who will ride or operate the machine, and what must be carried. That short description exposes whether this product’s size, control layout and powertrain are sensible. It also gives the dealer a useful brief for demonstrating the exact stock unit and quoting the right support package.

Practical storage is part of the choice. Measure the doorway, parking bay, ramp or cargo area before signing, and allow room to turn the machine around. Check where a helmet, tools, charger, cables or loads will live, and how they will be secured. A model can have the right output and still be awkward in the place where it must be parked, charged, loaded or serviced.

South Africa derivatives

Variants and prices

Currency: ZAR
VariantTransmissionStatusObserved price
RFZ125S — current South African listing Specs shown View variant editorial & specsSee confirmed specificationsActiveR17,999

The model price label states the evidence basis. Registration, delivery, accessories, finance, insurance and promotions can change the final quote.

Confirmed facts only

Key specifications

RFZ125S — current South African listing

Power unit and performance

Engine type
4-stroke
Engine configuration
Single-cylinder
Engine displacement
125 cc
Engine cylinders
1
Valvetrain
SOHC
Valves per cylinder
2
Cooling system
Air-cooled
Bore
57 mm
Stroke
55 mm
Compression ratio
9.5
Maximum power
10.62 kW (14.2 bhp)
Engine speed at maximum power
7500 rpm
Maximum torque
8.6 Nm
Engine speed at maximum torque
5500 rpm
Claimed top speed
85 km/h
Ignition system
CDI electronic
Starter system
Kick-start
Lubrication system
Wet sump
Engine oil capacity
1.0 L

Transmission and final drive

Transmission type
Manual
Gear count
5
Gear shift pattern
1-N-2-3-4-5
Clutch type
Wet multi-plate
Primary drive type
Gear
Final drive type
Chain

Fuel, battery and efficiency

Fuel type
Petrol
Fuel supply system
Petrol
Fuel metering system
Carburettor
Fuel tank capacity
3.2 L
Fuel reserve capacity
1.5 L
Claimed fuel consumption
2.49 L/100 km
Tested fuel consumption
2.77 L/100 km
Calculated riding range
401 km
Recommended fuel grade
Unleaded petrol 95 RON

Dimensions and capacities

Overall length
1 mm
Overall width
860 mm
Overall height
800 mm
Wheelbase
1260 mm
Minimum ground clearance
180 mm
Seat height
800 mm
Kerb weight
132.5 kg
Dry weight
87 kg
Gross vehicle weight
330 kg
Maximum payload
170 kg
Seating capacity
2
Turning circle diameter
4.6 m

Frame and chassis

Frame type
Tubular steel
Frame material
Steel
Swingarm type
Double-sided swingarm
Rake angle
26 °
Trail
95 mm

Suspension

Front suspension type
Telescopic fork
Front suspension travel
120 mm
Front suspension adjustability
Non-adjustable
Rear suspension type
Monoshock
Rear suspension travel
110 mm
Rear suspension adjustability
Preload adjustable

Brakes and rider safety

Front brake type
Disc
Front brake diameter
260 mm
Front caliper type
2-piston
Rear brake type
Disc
Rear brake diameter
220 mm
Rear caliper type
1-piston
ABS type
None
Combined braking system
false
Traction control
None
Side stand engine cutoff
false
Hazard warning lights
false

Wheels and tyres

Front wheel size
70 in
Rear wheel size
90 in
Wheel type
Alloy
Front tyre size
70/100/19
Rear tyre size
90/100/16
Tyre construction
Bias-ply
Tyre fitment type
Tube
Recommended front tyre pressure
200 kPa
Recommended rear tyre pressure
225 kPa

Electrical and lighting

Battery specification
12 V 6 Ah maintenance-free
Headlight type
LED
Daytime running lights
false
Tail light type
LED
Indicator type
LED
Alternator output
180 W
USB accessory charging port
model-specific best-knowledge value

Instrumentation and connectivity

Instrument console type
Digital / analogue combination
Display size
3.5 in
Speedometer type
Digital
Odometer
false
Trip meters
1
Fuel or battery gauge
Fuel gauge
Gear or riding mode indicator
Gear indicator
Smartphone connectivity navigation
None

Ergonomics and comfort

Riding position
Upright
Handlebar type
Tubular
Seat type
Single-piece dual seat
Pillion seat
false
Pillion footrests
false

Utility and practicality

Rear carrier load rack
No
Under seat storage
0 L
Centre stand
false

Service and warranty

Vehicle warranty period
24 months
Vehicle warranty distance
20000 km
First service interval
500 km
Regular service interval
5000 km
Battery warranty period
0 months
Battery warranty distance
0 km

Emissions and compliance

Emission standard
Euro 3 / local homologation
Road legal homologation status
Off-road / closed-course use stated
CO₂ emissions
57.9 g/km
Stationary noise
88 dB(A)
Evidence-backed editorial

Highlights and fit

Pros supported by the local source

  • No unsupported pro has been added.

Who it may suit

Best for: a dedicated off-road machine for private ground and organised riding

Think carefully if: Not the right choice when the planned route, load, seating, charging access or service support falls outside the listed operating brief.

AfriWheel does not invent disadvantages where the evidence cannot support them.

Official listed finishes

Colours

BlackBlueRedWhite
Common buying questions

Big Boy RFZ125S FAQs

No FAQ is published without an evidence map.

Evidence trail

Primary sources and limits

Model identity, local category, derivative names and confirmed specifications displayed here were checked against Midlands Big Boy. Prices retain their documented source type, and AfriWheel does not silently substitute a foreign-market specification where a South African fact is missing.

Big Boy South Africa RFZ125S product page ↗Big Boy South Africa completed model and variant specification collection ↗Specification document ↗Accessed 1 October 2026Reliability tier 2