CarBrandLogos archive · Aprilia · 2009

ApriliaRSV4

A narrow-angle V4 that turned a small factory into a world champion.

The story

A defining chapter in Aprilia history.

Explore the ideas, engineering and context that shaped the Aprilia RSV4, then continue into its specifications and place in the marque's lineage.

Origins

When Aprilia replaced the RSV 1000 R in 2009, it did not build another V-twin. It built a 65-degree V4 - a configuration seen in racing but almost never in a production superbike - and made it as compact as it could, so that the whole motorcycle could be laid out around it.

APRILIONA 098 · Flone at Italian Wikipedia · Public domain

Design and engineering

The reasoning was chassis-first. A short, narrow engine allows a shorter wheelbase, a longer swingarm and freedom to place mass where the designers want it, and the RSV4's aluminium twin-spar frame is adjustable in ways road bikes normally are not: headstock angle, engine height, swingarm pivot and rear ride height can all be altered. The engine itself, 999.6 cc with variable-length intakes, was enlarged to 1099 cc for the 2021 revision.

Aprilia RSV4 Factory - EICMA 2024 · Saggittarius A · CC BY 4.0

In production

The racing record justified the effort. The RSV4 took World Superbike riders' championships in 2010, 2012 and 2014, Max Biaggi winning the first two and Sylvain Guintoli the third, with manufacturers' titles alongside them - a remarkable return for a factory a fraction of the size of its Japanese rivals.

Legacy

Road versions have tracked the racing closely. Factory and RF models brought Ohlins suspension and forged wheels, the electronics grew from traction control into a full inertial-platform package, and winglets appeared on the fairing once MotoGP had made them respectable. The same engine went on to power the Tuono V4.

Chapter 5

More than fifteen years after launch the RSV4 is still in production, still recognisably the same architecture, and still the bike most often cited by people arguing that the best-handling superbike comes from neither Japan nor Bologna.

At a glance