Here at White Motorcycle Concepts we’ve long been believers that ducting air through a motorcycle rather than diverting around the bike is a key route to reductions in aerodynamic drag and improvements in efficiency – and at the opening Grand Prix of the 2026 season the winning Aprilia RS-GP26 debuted an idea that suggests the Italian brand is thinking along the same lines.
The Aprilia idea, which features two new intakes on the nose leading to a pair of outlet ducts by the rider’s elbows on the trailing edge of the front fairing, immediately drew comparisons with the infamous ‘F-Duct’ that McLaren introduced to F1 in 2010. Like the F-Duct, the ducts in the rear edge of the Aprilia’s front fairing can be manually blocked by the rider’s arms, leading to speculation that this diverts the air from the nose intakes elsewhere on the bike to reduce drag when the rider is tucked in on straights.
However, the F-Duct comparison is a little misleading. In the McLaren system, copied by several other teams, an intake on the front of the car led to an opening inside the cockpit that the driver could block with their hand. That diverted air to the underside of the rear wing, reducing downforce and drag. But the Aprilia system appears to be concerned more with the airflow when the elbow ducts are open than when they’re closed.
It’s a development of an idea that was subject of an Aprilia patent application over the winter, and which we wrote about here: (https://whitemotorcycleconcepts.com/new-motorcycle-aerodynamic-innovations-keep-coming/). In that application, Aprilia described a system where vertical winglets behind the rider’s legs could be fed with a stream of air, but only during corners when the rider put their knee down. Putting their knee out opened a path for the air on one side of the bike, allowing the winglet on that side to create downforce, while the leg on the other side blocked the airflow to the opposite winglet, so it couldn’t create an opposing lift force.
The MotoGP development of the idea uses ducts to make it much more effective. Instead of relying on airflow around the sides of the front fairing to go through the opening created when the rider sticks their knee out, it’s channelled straight from the nose to openings just ahead of the point where the rider’s knees naturally sit. Behind the rider’s legs are a pair of quite aggressive vertical winglets that, seen from above, turn inwards towards the centre of the bike. On straights, the inner faces of these winglets are largely blocked from airflow by the rider’s legs, but when he hangs off the inside of the bike in corners the duct on the corresponding side channels air straight to the winglet behind it. The result? More cornering downforce and speed.
Better still, there’s a boost to braking. In braking zones, riders – and the Aprilia riders in particular – sit up and extend the leg towards the inside of the upcoming corner, often taking their foot off the peg. On the new Aprilia that opens the path for airflow from the duct exit on the rear edge of the fairing to hit the horizontal, wing-shaped elements connecting the vertical side winglet to the seat unit behind the rider’s leg. That will add rear downforce just as they’re hitting the brakes, helping keep the back of the bike on the ground and stable during the braking zone.
Giving the ability to close the ducts completely, by pressing the rider’s elbows against rubber seals around their edges when in a straight-line crouch, adds a second string to the idea. Instead of relying on the rider’s legs to block the airflow to the side wings on the tail, creating a messy flow where it hits them, the airflow through the ducts can be stopped altogether, creating straight-line aero akin to the previous, un-ducted version of the bike.
At the moment, it’s speculated that when the ducts are blocked, the air is redirected through the gill-like side outlets of the fairing, mingling with the hot air that’s already passed through the radiators. This section of the bike’s aero is already designed to minimise the disturbance of the outlets.
However, it’s an idea that also opens the door to a system more like the original F-Duct, whereby closing the duct outlets could redirect air to other areas, reducing straight line drag. For example, adding internal ducting to expel the air below the front winglets, reducing their downforce and drag (an idea that was subject to a Suzuki patent application in the dying days of that brand’s involvement in MotoGP in 2022), or ducting it to the rear to reduce the effect of other aero elements on the tail, would be relatively easy.
What’s abundantly clear is that the Aprilia RS-GP26 represents a substantial step forward over its predecessor, not only winning its first Grand Prix but with taking four of the top five places in the race. Every other team on the grid will now be poring over the potential of the ducts that helped it to that success, and as a result there’s sure to be a rapid acceleration of development in an area of motorcycle aerodynamics that’s particularly close to our hearts.
