Yamaha’s V4 MotoGP engine project progressed at a recent private test in Brno, with test riders Andrea Dovizioso and Augusto Fernandez showcasing the new prototype’s revised rear aerodynamics. The test, which included Honda and Yamaha MotoGP test teams along with Moto2 riders, featured the unveiling of a new KTM-style rear wing as the most notable visual development.
The Japanese factories, under their D-concession ranking, had the opportunity to bring race riders to the private test. Yamaha was represented by Alex Rins and Miguel Oliveira, while Honda’s Luca Marini made his return to action following his Suzuka testing injuries. The test saw development work on the current Inline M1 machine, with Dovizioso testing the V4 on Tuesday before Fernandez took over on Wednesday.
Although Yamaha has not disclosed specific lap times from the test, Managing Director Paolo Pavesio indicated that the V4 is still in the early stages of development. He mentioned that feedback from riders suggests the bike is moving in the desired direction. Yamaha remains undecided on which bike to race in 2026, emphasizing that the V4 must outperform the Inline machine to earn the nod for competition.
The current M1 rear aero and the new KTM-style rear wing were on display during the test. While Yamaha does not comment on private tests, there is speculation that the V4 may make a wild-card appearance later in the 2025 season if it performs well. Fernandez is rumored to possibly pilot the V4 in the closing stages of the campaign.
Given that the rear wing design is not restricted by homologation rules, Yamaha race riders could potentially test the latest wing design on their Inline machines at the upcoming German round. This flexibility allows for further evaluation and fine-tuning before any final decisions are made regarding the V4’s competitive debut.
As the MotoGP season progresses, developments like these private tests play a crucial role in refining the performance of racing machines. The evolution of Yamaha’s V4 MotoGP engine exemplifies the ongoing pursuit of engineering excellence and competitive advantage in the world of motorcycle racing.
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