14 August. Friday 2026
Aprilia RS 125 - 1999 Specifications and Reviews
The 1999 Aprilia RS 125 is a lightweight sport bike ideal for beginner riders and learners seeking an accessible entry into sportbike riding. Known for its nimble handling and liquid-cooled 125cc engine, it delivers responsive performance with Italian styling. Its manageable weight and 6-speed transmission make it perfect for developing fundamental riding skills.
1999
Replaced by the: Aprilia RS4 125
About the Aprilia RS 125
The 1999 Aprilia RS125 introduced more rounded fairings, five spoke wheels and a single air duct at the riders side. The pointed lip on the nose was also slightly exaggerated.
Power is provided by a liquid cooled two stroke single cylinder 125cc engine..
General information | |
| Category | Sport |
| Year | 1999 |
| Model | Aprilia RS 125 |
Engine and Transmission Specifications | |
| Transmission typefinal drive | Chain |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Starter | Electric |
| Bore x stroke | 54.0 x 54.4 mm (2.1 x 2.1 inches) |
| Compression | 12.5:1 |
| Torque | 15.00 |
| Power | 15.00 |
| Stroke | 2 |
| Engine type | Single cylinder |
| Capacity: | 125.00 ccm (7.63 cubic inches) |
Physical measures and capacities | |
| Wheelbase | 1,345 mm (53.0 inches) |
| Seat height | 780 mm (30.7 inches) If adjustable, lowest setting. |
| Front percentage of weight | 49.3 |
| Weight incl. oil, gas, etc | 143.0 kg (315.3 pounds) |
| | |
Aprilia RS 125 dimensions and frame | |
| Rear brakes diameter | 220 mm (8.7 inches) |
| Rear brakes | Single disc |
| Front brakes diameter | 320 mm (12.6 inches) |
| Front brakes | Single disc |
| Rear tyre dimensions | 150/60-ZR17 |
| Front tyre dimensions | 110/70-ZR17 |
| Front suspension travel | 120 mm (4.7 inches) |
| | |
Speed and acceleration | |
| Top speed | 124.0 km/h (77.1 mph) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Fuel consumption pr. 10 km (6.2 miles) | 0.52 litres (0.14 gallons) |
| Fuel capacity | 13.00 litres (3.43 gallons) |
Performance Profile & Rider Fit
14.8 hp
Peak Power
9.5s
0-60 mph
77.1 mph
Top Speed
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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