Aprilia SXV - The forgotten champion
The Aprilia supermoto, known to enthusiasts as the SXV, remains one of the boldest road legal supermotards ever built: a featherweight, race bred V-twin that won four straight Supermoto World Championships between 2004 and 2008 before fading into cult status. This is the story of the forgotten champion, the unusual engineering that made it a winner, and why its name still tops searches like aprilia supermoto, aprilia motard and aprilia sxv today.
What is a supermoto, and where does the Aprilia SXV fit?
Supermoto is a hybrid form of motorsport, close to motocross or American supercross, run on off-road motorcycles fitted with street tires. It reads like the natural evolution of dirt track racing. Born in the late 1990s, supermoto grew almost as popular as motocross within a few years, and most motorcycle manufacturers soon launched their own supermoto models. Because of their off-road roots, these supermotards typically used 250cc to 600cc engines and stayed light and sharp.
In 2002 the S1 Supermoto World Championship was inaugurated, and brands like Husqvarna and TM Racing quickly stood out for their results on track, which also boosted their sales. Into this single-cylinder world arrived something completely different from the Noale factory.
Why was the Aprilia SXV a championship winner?
Winning the championship four years straight, from 2004 to 2008, the Aprilia SXV became the emblem of a winning brand in a fiercely competitive category. The SXV also caught everyone's attention thanks to its striking look and its unusual mechanical layout. The bike gained high rigidity from a perimeter frame and a modular-case swingarm, far more effective than the off-road derived chassis everyone else used. That frame had never been fitted to a supermotard before, and neither had the compact 77 degree V-twin engine, which delivered more power and a smoother, more uniform power delivery than any big single. According to Aprilia's own history, the marque collected a string of Supermoto world titles on the back of this engineering bet.
What engine powers the Aprilia SXV, and how fast is it?
The heart of the bike is an ultra compact 77 degree V-twin, offered in 450cc and 550cc displacements. The SXV 550 produces roughly 70 bhp for a dry weight near 128 kg, an extraordinary power-to-weight ratio that explains why it is still described as the most powerful 550 supermoto of its era. The V angle was chosen after extensive testing to reduce vibration, letting Aprilia drop the balancer shafts while still running smoother than a single. Specialist coverage from Motorcycle News and the full year-by-year specifications archived by autoevolution confirm the figures behind its reputation.
Why did the road legal Aprilia supermoto fail commercially?
The road legal version raised curiosity and, unfortunately, skepticism, precisely because of those unusual features. It proved unreliable in everyday use and ended up a commercial failure despite the iconic aura built by its racing success. That is an unworthy ending for a brave and unique motorcycle, and the reason the aprilia sxv and aprilia supermotard names still draw a loyal following hunting for clean examples and the elusive aprilia supermoto for sale.
Want an Italian race bred motorcycle in your collection?
If the SXV story speaks to you, TheArsenale curates rare and collectible builds in the same spirit. Start with the full motorcycles collection, then look at the Italian thoroughbred Aprilia Tuono X Collector Edition, the supermoto-flavoured BW 701 Vitpilen Husqvarna and, for a high-tech twist, the Arc Vector Angel Edition electric motorcycle.
