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Aprilia RS250


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Aprilia RS250
Aprilia RS250 94
Manufacturer Aprilia
Production 95-04
Engine 250cc
Sparkplug BR9ECM '03-04
Battery YB4L-B '03-04
Front Tire 120/70-17 '03-04
Rear Tire 160/55-17 '03-04
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The RS250 is that increasingly rare item: a current two-stroke production roadbike. Emissions legislation worldwide has made the large-capacity two-stroke engine a thing of the past, with its poor fuel consumption and excessively dirty exhaust emissions.

But Aprilia's RS250 continues to provide some of the purest motorcycling performance available. The heart of the bike is a rather outdated engine, Suzuki's RGV250 motor, first seen in 1989. It's a V-twin two-stroke, with several advanced power-boosting features, including guillotine-type power valves, electronically-controlled 34mm Mikuni flat-slide carburetors and ceramic-coated cylinders.

Aprilia modified the RGV's exhaust and intake systems to produce a power increase to 52kW (70bhp) at the crankshaft, equivalent to 280bhp/litre: the highest specific power output of any current production roadgoing motorcycle.

The rest of the bike is more than capable of handling this impressive power figure. A twin-spar aluminium frame provides super-stiff handling, and the fully-adjustable Showa upside-down front forks and rear monoshock allow a wide range of adjustment for any track or road situation. Wide sports tyres provide amazing grip, and the front twin Brembo four-piston calipers offer superlative stopping power, especially for a bike weighing just 140kg (2241b).

While the RS250's engine is based around a design that's more than a decade old, the styling is undoubtedly modern. A banana-style upswept aluminium swingarm and twin side-mounted exhausts pay tribute to the Grand Prix technology behind the RS, as well as providing a unique look.

Since Suzuki discontinued its RGV250, the RS250 has been unique in its class. The closest rivals to this mini-racebike are the four-cylinder 400cc four stroke machines like Honda's VFR400 and Kawasaki's ZXR400. But these heavier machines can't provide the ultimate cornering experience of the RS250, nor the exhilaration of the 250's screaming two-stroke acceleration.

Contents

Specifications

Make ModelAprilia RS 250
Year1995-96
EngineLiquid cooled, two stroke, 90° V twin
Capacity249
Bore x Stroke56 x 50.6 mm
Compression Ratio13.2:1
InductionMikuni TM 34 SS flat sides
Ignition / StartingCDI digital
Max Power 72.5 hp 52.9 kW @ 11900 rpm (rear tyre 65.5 hp @ 11100 rpm)
Max Torque40 Nm @ 10750 rpm
Transmission / Drive6 Speed / chain
Front Suspension40mm Inverted with adjustable rebound and compression damping. 120mm wheel travel.
Rear SuspensionMagnesium alloy swingarm. Monoshock with resevoir, adjustable extension, compression and spring preloading. 130mm wheel travel.
Front Brakes2x 298mm discs 4 piston calipers
Rear BrakesSingle 220mm disc 2 piston caliper
Front Tyre120/60 -17
Rear Tyre150/60 -17
Dry-Weight 140 kg
Fuel Capacity 19.5 Litres
Consumption average34 mp/h
Braking 60 - 0 / 100 - 012.9 m / 36.8 m
Standing ¼ Mile 12.50 sec / 172.5 km/h
Top Speed209.5 km/h

1997

Aprilia RS250 97-4

1998

Aprilia RS250 98-3
Aprilia RS250 98-1
Aprilia RS250 98-2

1999

Aprilia RS250 99

2000

Aprilia RS250 00
2000 Aprilia RS250 in Black
2000 Aprilia RS250 in Black
2000 Aprilia RS250 in Black
2000 Aprilia RS250 in Black
2000 Aprilia RS250 in Black
2000 Aprilia RS250 in Black
2000 Aprilia RS250 in Black
2000 Aprilia RS250 in Black



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