2002 Aprilia RS 250 Challenge Cup Edition

Make Model	Aprilia RS 250 Challenge Cup Edition
Year	2002
Engine	Two stroke, 90° V twin-cylinder, with laminar suction and exhaust valve. Separate lubrication with variable automatic mixer
Capacity	249 cc / 15.2 cu in
Bore x Stroke	56 x 50.6 mm
Cooling System	Liquid cooled
Compression Ratio	12.00 (+/- 0.7) : 1
Lubrication	Oil pump with separate circuit
Induction	2 x Ø34 mm Mikuni 34 SS flat side carburetors
Fuel Type	Lead-free petrol, R.O.N. minimum 95
Engine Oil Recommendation	IP MAX 2T COMPETITION, or any high-quality oil meeting the ISO-L-ETC++ or API TC++ specifications
Air Filter	With polyurethane filter element
Ignition	CDI
Battery	12V 4Ah
Starting	Kick
Max Power	52.9 kW / 72.5 hp @ 11900 rpm
Max Power Rear Tyre	47.2 kW / 64.3 hp @ 10400 rpm
Max Torque	40 Nm / 4.08 kgf-m / 29.5 lb/ft @ 10750 rpm
Clutch	Oil bath, multiple-disc, with lever control on handlebars
Transmission	6 Speed, direct drive
Gear box oil Recommendation	IP FC, SAE 75W-90, or any high-quality oil meeting the API GL-4 specification
Final Drive	Chain, sealed, jointless, DID 520 V6
Gear Change	With pedal (L), 1st low, other 5 high
Final Reduction	14:42 (1:3.0)
Gear Ratio	1st 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)
Primary Reduction	23:59 (1:2.565)
Front Suspension	Ø40 mm Inverted fork with adjustable rebound and compression damping.
Front Wheel Travel	120 mm / 4.7 in
Rear Suspension	Magnesium alloy swingarm. Monoshock with resevoir, adjustable extension, compression and spring preloading.
Rear Wheel Travel	130 mm / 5.1 in
Front Brakes	2 x Ø298 mm discs, 4 piston calipers
Rear Brakes	Single Ø220 mm disc, 2 piston caliper
Front Wheel	3.50 x 17
Rear Wheel	4.50 x 17
Front Tyre	120/60-17
Rear Tyre	150/60-17
Rake	25°
Turning circle Ø	4.09 m / 13.4 ft
Dimensions	Length: 1880 mm / 74.0 in Width: 690 mm / 27.2 in Height: 1080 mm / 42.5 in
Wheelbase	1370 mm / 53.9 in
Seat Height	810 mm / 31.9 in
Ground Clearance	135 mm / 5.3 in
Dry Weight	140 kg / 309 lbs
Wet Weight	167 kg 368 lbs
Fuel Capacity	16.5 L / 4.4 US gal
Reserve	3.5 L / 0.9 US gal

Aprilia RS 250 Challenge Cup Edition, It's a racing series.
It's a two-stroke sportbike and a racing series all in one.
It's IROC for motorcycles. Well, maybe AROCH is more like it: American Race Of Champion Hopefuls. And that's it in a nut. You can't have one without the other; the RS 250 is available to licensed racers only and the Cup Challenge is for Aprilia RS 250s only. Sure, you might be able to get your hands on an RS 250 and never race it but I have to leave you to your own devices for that one.

Now that Aprilia has come to the States they'd also like to get all of the gray-marketed RS 250s off the streets, so the Cup Challenge series is open to all RSs dating back to '95.

When Aprilia wasn't here they didn't have much to fear in the way of liability because if a foolish owner wanted to sue them there wasn't anyone around to sue. Now that they have an office here they're concerned about liability issues in our litigious-happy States, so Aprilia must protect itself up front. So, if you're riding an RS on the street you probably shouldn't try ordering parts from their American distribution center. Hide it or get it to the racetrack.

The idea behind the Aprilia Cup Challenge series is to offer riders a reasonably inexpensive place to race where riding, not tuning, can determine the finishing order. Modifications are not allowed. At this writing the chance still exists that the governing body of the series will even transport your bike to each event. Just show up, ride your bike, collect your money, kiss the girl, and go home.