Aprilia RXV/SXV

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Aprilia RXV/SXV
Manufacturer Aprilia
Production 2007-
Class Enduro/Supermoto
Engine 449 cc twin-cylinder v-twin, water-cooled, four stroke or 549 cc twin-cylinder v-twin, water cooled four stroke
Power 60 hp (4.5), 70 hp (5.5)
Transmission 5-speed
Brakes double oversize disc, wave rotors
Tires 120/70 x 17 inches, 180/55 x 17 inches
Wheelbase 58.86 inches
Dimensions L 87.4 inches H 51.2 inches
Seat height 39.2 inches
Weight 268 lb (122 kg)
Fuel capacity 2.0 gallons
Similar Honda CRF450X, DRZ400SM

The Aprilia RXV/SXV series are four-stroke, v-twin, off-road motorcyles produced by Aprilia. They are available in several models, including an enduro (RXV) and supermotard (SXV). The bike was introduced in 2007. The bike is banned from American Motorcyclist Association due to its v-twin design; the AMA rules prohibit all two-cylinder motorcycles from competition. [1]

Contents

[edit] Engine

The RXV/SXV has a v-twin engine, and is one of the first off-road motorcycles to feature fuel injection. The 4.5 has a displacement of 449 cc, while the 5.5 has a displacement of 549 cc. Each engine has a single-overhead cam and four valves per cylinder. The 77 degree cylinder angle minimizes vibration. [2] Both are dry sump, with a separate oil tank for the gearbox and engine.

The 4.5 produces a claimed 60 horsepower (45 kW) at the crank, while the 5.5 produces a claimed 70. [3] Unfortunantly, horsepower measured at the crank is of little use to the average rider; horsepower measurements are much more accurate when taken at the rear wheel with a dynomometer. [4]

[edit] Models

  • SXV 4.5
  • SXV 5.5

The SXV 5.5 has a redline (electronic fuel cut) of 11500 rpm with a top speed of a little over 170kph (100mph) with standard gearing. This can be easily increased with different sprockets and chains however, suspension tweaks will be needed as the bike is known to wobble at speeds in excess of 150kph (90mph).

  • RXV 4.5
  • RXV 5.5

[edit] Frame/Chassis

The RXV/SXV's frame is made of a combination of tubular steel and aluminum plates. The compact engine fits into the frame in such a way that the air filter sits on top of the engine, below the gas tank, rather than the more traditional under-the-seat location. [5] This allows for a lower distribution of weight.

[edit] References