Aprilia RS 125 - 2021 Specifications and Reviews
The 2021 Aprilia RS 125 is a lightweight sport bike designed for new riders and commuters seeking an accessible entry into sportbike riding. Powered by a 124cc liquid-cooled four-stroke engine producing 28.2 horsepower, it delivers responsive performance and agile handling in a manageable package. Best known for its sharp styling, reliable mechanics, and excellent fuel efficiency, the RS 125 combines everyday practicality with genuine sporting character.
2021
General information | |
| Category | Sport |
| Year | 2021 |
| Model | Aprilia RS 125 |
| | |
Engine and Transmission Specifications | |
| Emission details | Euro 4 |
| Driveline | Primary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35). |
| Clutch | Multiple discs, in oil bath |
| Transmission type | Chain (final drive) |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Lubrication system | Wet sump |
| Ignition | Electronic with CDI capacity discharge |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel system | Carburettor. Magneti Marelli M3G ø 32mm ECU |
| Valves per Cylinder | 4 |
| Bore x Stroke | 58.0 x 47.0 mm (2.3 x 1.9 inches) |
| Compression | 12.5:1 |
| Power | 28.2 HP (20.6 kW) |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 124.2 ccm (7.58 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Wheels | Aluminium alloy rims |
| Rear brakes | Single disc. Stainless steel disc and calliper with single 30 mm piston. |
| Diameter | 300 mm (11.8 inches) |
| Front brakes | Single disc. ABS. Stainless steel disc with radial 4 piston calliper |
| Rear tire | 130/70-R17 |
| Front tire | 100/80-R17 |
| Rear wheel travel | 120 mm (4.7 inches) |
| Rear Suspension | Swingarm. Hydraulic monoshock with adjustable spring preload. |
| Front wheel travel | 110 mm (4.3 inches) |
| Front Suspension | Upside down hydraulic fork, 41 mm. |
| Frame type | Aluminium perimeter |
| | |
Physical measures and capacities | |
| Reserve fuel capacity | 3.50 litres (0.92 US gallons) |
| Fuel capacity | 14.50 litres (3.83 US gallons) |
| Wheelbase | 1353 mm (53.3 inches) |
| Overall width | 760 mm (29.9 inches) |
| Overall length | 1968 mm (77.5 inches) |
| Overall height | 1135 mm (44.7 inches) |
| Seat height | 820 mm (32.3 inches) If adjustable, lowest setting. |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Starter | Electric |
| Color options | Black Speed, Silver Spped |
Performance Profile & Rider Fit
14.8 hp
Peak Power
9.5s
0-60 mph
Best For
Track58%
City62%
Cornering82%
Daily Riding60%
Touring18%
Passenger18%
Rider Profile
| Best For | Ideal for beginners and A1 licence holders; a forgiving, learner-friendly sportbike that also rewards experienced riders honing technique. |
| Purpose | A pint-sized track-styled sportbike built for spirited backroad riding, carving corners, commuting, and learning proper sport riding skills. |
| Rider Fit | Light 144kg with a committed sport riding position: clip-on bars, 820mm seat and rear-set pegs. Compact and manageable but leaning-forward and firm. |
| Character | A miniature superbike with real GP-inspired attitude - eager, revvy single that must be worked hard, delivering big-bike thrills at modest speeds. |
| Not Ideal For | Not for those wanting outright speed, relaxed touring comfort, two-up practicality, off-road use, or a laid-back upright commuter. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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Rider Reviews
Total comments: 1

MotorcycleDB Review
The 2021 Aprilia RS 125 is a sleek and powerful motorcycle that is sure to turn heads on the road. With its aggressive styling and high-performance engine, this bike is perfect for riders who crave speed and agility. The 125cc engine delivers impressive power, while the lightweight chassis and advanced suspension offer excellent handling and control. Whether you're navigating city streets or hitting the open road, the Aprilia RS 125 provides an exhilarating riding experience that is unmatched in its class. In addition to its impressive performance, the 2021 Aprilia RS 125 also boasts advanced technology features such as LED lighting, digital display, and a range of safety systems. These modern amenities enhance the overall riding experience and provide added convenience for the rider. With its combination of sporty design, powerful engine, and cutting-edge technology, the Aprilia RS 125 is a top choice for riders looking for a thrilling and dynamic motorcycle.Add a Comment
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