The RS4 125 – the first Aprilia sport bike in this engine class with a 4-stroke engine – and the RS4 50 allow young enthusiasts to take advantage of the maximum levels of technological innovation, chassis efficiency, active safety and component quality. They belong – not only from a styling point of view – to the same range of extremely high performance Italian motorcycles in which the Aprilia RSV4 stands out, the extraordinary bike which conquered two world titles in the 2010 Superbike season.

APRILIA SPORT BIKES: WINNING DNAIn its short history, Aprilia has earned 48 world titles (37 in Moto GP, 2 in Superbike, 9 in off-road competition) and hundreds of championship races, to become the most victorious Italian and European brand in just a short period of history in Moto GP.

It is precisely in the youngest classes of Moto GP that Aprilia established itself as a true "school of champions". On Aprilia 250 and 125 bikes in the RS series (RS, RSV, RSW and RSA) riders such as Biaggi, Rossi, Melandri, Stoner, Lorenzo rode to their first great triumphs.

Every weekend, all over the world, Aprilia bikes take to the track, from international venues to local races, holding high the honour of Italian and European motorcycling, supporting the biker's desire to race and cultivating young riders destined to enter the world championship scene.

Aprilia has always drawn from this wealth of success and technical skills for mass production – both in the philosophy which inspires the product and the aesthetics which are often taken from the racing bike – establishing itself from the start as an absolute leader in the 50 and 125 super sport segment, categories in which the Noale brand has introduced timeless innovative concepts and solutions and dictating trends which would be followed by all of its competitors.

From 1993 until today, more than 100,000 Aprilia RS 125 two stroke bikes have been manufactured and sold in more than 30 countries around the world.



Aprilia RS4 125 規格表
 呎吋 SIZE
 全長 Length 1,953mm
 全闊 Width 740mm
 全高 Height 1,138mm
 軸距 Centre to centre distance 1,350mm
 座位高度 Saddle height 820mm
 最低離地距 Height from the ground -
 淨重 Dry weight -
 油箱容量 Fuel tank capacity 14.5L
 引擎模式 Engine 水冷四衝程DOHC單汽缸4汽門
Four stroke liquid cooled single cylinder with electronic injection and 4 valves.

 排氣量 Total displacement

 最大馬力 Max. power at the crank -
 最大扭力 Max. torque at the crank
 壓縮比 Compression ratio 12.5 ± 0.5 : 1
 缸徑x衝程 Bore x Stroke 58mm x 47mm
 供油系統 Fuel system 電子燃油噴注系統
electronic injection system
 前傾角 Steering angle -
 拖曳距 Trail -
 起動 Starting 電動 Electric
 傳動系統 Gear box 濕式多片6前速,鍊條傳動
6-speeds , Chain.
 車架型式 Frame 鋁合金雙樑車架
Aluminium perimeter frame
 前懸掛系統 Front suspension 直徑41mm倒立前叉,110mm行程
41 mm upside down fork, wheel excursion 110 mm
 後懸掛系統 Rear suspension
Asymmetric swingarm with monoshock, wheel travel 130 mm
 前制動系統 Front Brakes
300 mm stainless steel disc with radial 4 piston calliper
 後制動系統 Rear Brakes
218 mm stainless steel disc and calliper with single 30 mm piston
 前輪胎 Front Tyres 100/80 ZR17
 後輪胎 Rear Tyres 130/70 ZR17