Motorcycle Racing News Aprilia RSV4: Superbike Champ Review

Aprilia RSV4: Superbike Champ Review

2010 World Superbike

The only vee-four in the World Superbike class proved the winner in 2010, as all the many technical advances and adjustments that featured on the RSV4 from its arrival in 2009 finally meshed together the way the Aprilia engineering team, led by Luigi Dall’Igna intended them to.

Variable height intake trumpets, a bespoke Aprilia injection and ECU system, ride-by-wire throttle control and inertial inputs for bank angle and overall RSV4 attitude were just some of the technical feasts enjoyed by 2010 WSBK Champ Max Biaggi and his teammate Leon Camier.

Easily the most race-focused of the 2010 superbike machines, the RSV4 was at its best at either fast circuits or smoother circuits. On more bumpy or scarred surfaces, the Aprilia’s pure racetrack genes actually made it more of a handful than most other bikes, as agility edged towards sensitivity.

A quoted BHP output of over 215@15,000rpm seems a little conservative, but the Aprilia also made great use of its relatively small frontal area and narrow engine – not to mention great traction exiting corners – to post its consistently high top speed figures in World Superbike.

The bore and stroke of 78 x 52.3mm of the Aprilia RSV4 Superbike was not the most radical in the class, although a compression ratio of 14.5:1 seemed as high as any other.

Overall adjustability on the Aprilia was greater than any other machine, but also the ease with which it could be adjusted was class leading. Not only was the engine a moveable feast, the headstock and swingarm alterable in several planes, but the cassette gearbox also saved time in the pits between sessions.

The biggest controversy in the life of the RSV4 superbike was of course the adoption of full gear drive cams from Miller onwards, as the last piece of the full-race jigsaw was put in place.

Right on the weight limit of 162kg, the Aprilia RSV4 was a truly special machine in full WSBK trim, as Aprilia intended it to be, and it formed the basis of a clean sweep of Riders’, Manufacturers’ and Team’s titles.

Ron Lieback
Ron Lieback
One of the few moto journalists based on the East Coast, Ron Lieback joined the motorcycle industry as a freelancer in 2007, and is currently Online Editor at Ultimate Motorcycling.

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