Aprilia RS 250 (1998 – 99)

Aprilia RS 250 (1998 - 99)

The Aprilia RS 250 is a high-performance motorcycle that embodies the spirit of GP racing. Its sleek design, inspired by the championship-winning GP250 bike, exudes speed and agility.

Under its slim fairings lies a potent engine, a modified Suzuki RGV250 unit prepared by Aprilia to deliver exceptional power and responsiveness. Twin Mikuni 34 mm flat slide carburetors feed this beast of an engine, while revised ECU settings and bespoke expansion chambers maximize performance.

The RS 250’s chassis is a masterclass in engineering, featuring a lightweight, cast twin-spar aluminum/magnesium alloy frame with monocoque reinforcements that incorporate the engine as a fully stressed member. This results in exceptional handling and stability on twisty roads or racetracks alike.

Key Specifications

Engine TypeTwo stroke, 90 V twin-cylinder, with laminar suction and exhaust valve. Separate lubrication with variable automatic mixer
Engine Capacity249 cc / 15.2 cu in
Max Power52.9 kw / 72.5 hp
Max Torque40 Nm / 4.08 kgf-m / 29.5 lb/ft @ 10750 rpm
Fuel Tank Capacity4.4 US gallons / 16.5 L
Weight (Wet/Kerb)368 lbs / 167 kg
Seat Height31.9 inches / 810 mm
Aprilia RS 250 (1998 - 99)

All Specifications

Make & Model

ModelAprilia RS 250
Year1998 – 99

Engine

Engine TypeTwo stroke, 90 V twin-cylinder, with laminar suction and exhaust valve. Separate lubrication with variable automatic mixer
Displacement249 cc / 15.2 cu in
Bore x Stroke56 x 50.6 mm
Compression Ratio12.0:1 (+/- 0.7)
Max Horsepower52.9 kw / 72.5 hp
Max Torque40 Nm / 4.08 kgf-m / 29.5 lb/ft @ 10750 rpm
Engine Management System2 x 34 mm Mikuni 34 SS flat side carburetors
Lubrication SystemOil pump with separate circuit
Cooling SystemLiquid cooled

Performance

Top Speed209.5 km/h / 130.2 mph

Transmission

ClutchOil bath, multiple-disc, with lever control on handlebars
Gearbox6 Speed, direct drive
Gear Ratios1st 11:27 (1:2.454) / 2nd 16:26 (1:1.625) / 3rd 17:21 (1:1.235) / 4th 22:23 (1:1.045) / 5th 24:22 (1:0.916) / 6th 25:21 (1:0.840)
Final DriveChain, sealed, jointless, DID 520 V6

Electrical & Electronics System

Battery12V 4Ah
StarterKick

Chassis & Suspension

Front Suspension40 mm Inverted fork with adjustable rebound and compression damping.
Front Suspension Travel4.7 inches / 120 mm
Rear SuspensionMagnesium alloy swingarm. Monoshock with resevoir, adjustable extension, compression and spring preloading.
Rear Suspension Travel5.1 inches / 130 mm
Rake25

Wheels & Brakes

Front Wheel/Rim Size3.50 x 17
Front Tire Size120/60-17
Rear Wheel/Rim Size4.50 x 17
Rear Tire Size150/60-17
Front Brakes2 x 298 mm discs, 4 piston calipers
Rear BrakesSingle 220 mm disc, 2 piston caliper

Dimension & Weights

Overall Length1880 mm / 74.0 in
Overall Width690 mm / 27.2 in
Overall Height1080 mm / 42.5 in
Seat Height31.9 inches / 810 mm
Wheelbase53.9 inches / 1370 mm
Ground Clearance135 mm / 5.3 in
Fuel Tank Capacity4.4 US gallons / 16.5 L
Wet (kerb/curb) Weight368 lbs / 167 kg
Dry Weight141 kg / 309 lbs

Features

  • Modified Suzuki RGV250 engine prepared by Aprilia with revised ECU and expansion chambers.
  • Twin 34 mm flat slide Mikuni carburettors retained from the RGV.
  • Cast twin spar aluminium/magnesium alloy frame with thin-walled monocoque reinforcements.
  • Banana swingarm made of polished aluminium alloy for improved ground clearance in turns.
  • 41 mm Showa inverted front forks adjustable for compression and rebound.
  • Sachs mono-shock rear suspension adjustable for preload, compression, and rebound.
  • Brembo dual 298 mm front discs with four-piston calipers.
  • Single 220 mm rear disc with twin-piston caliper.
  • Lightweight, 5-spoke cast aluminum rims (3.50×17 up front and 4.50×17 out back).
  • Digital instrument panel displaying speed readings, rev limiter warning zone indicator, water temperature, battery charge indicator, clock, and chronometer.
  • Adjustable rev limiter warning zone indicator.
  • Water temperature display with choice of scale.
  • Battery charge indicator.
  • Clock and chronometer that can remember up to 40 lap times.
  • Dummy ram-air intake on the RS250GP1 model.
Aprilia RS 250 (1998 - 99)
Aprilia RS 250 (1998 - 99)
Aprilia RS 250 (1998 - 99)
Aprilia RS 250 (1998 - 99)

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