Overview
- Test rider Augusto Fernandez will race the V4-powered Yamaha at the Valencia Grand Prix on 14–16 November to collect development data.
- Yamaha has not confirmed a switch to the V4 for 2026 and the prototype has not yet run at full power in its previous wildcard outings.
- Fabio Quartararo will try the V4 at the official Valencia test on Tuesday, 18 November, and he warns a single bike per rider could jeopardize the day if one is crashed.
- All four Yamaha race riders are slated to sample the V4 at the post-race test, with current plans indicating only one V4 available to each rider.
- This weekend could be the final race for Yamaha’s long-running inline-four if the factory proceeds with a V4 direction for next season.