Meanwhile, Monster Yamaha's Fabio Quartararo jumps to second - between Marco Bezzecchi and Pedro Acosta - after changing from the hard front to a used soft.
A late crash for Miguel Oliveira brings his session to an early end. The Portuguese will finish the session in 5th. Oliveira is okay but he'll probably only have one bike for qualifying with his M1 looking heavily damaged.
Into the final minute of the session and the factory Ducatis have been pushed down to 10th (Marc Marquez) and 12th (Francesco Bagnaia). Their tough weekend continues.
Behind the top two is the top Ducati of Fermin Aldeguer, the stand out Desmosedici so far this weekend.
Yamaha are also continuing to impress with Pramac riders Miguel Oliveira 4th and Jack Miller 6th, with Raul Fernandez in between for Trackhouse.
Marco Bezzecchi is still the fastest on old soft tyres, improving his best time after 11 laps on the soft tyres. But Pedro Acosta in second is matching him on the hard front and has just set his best lap time on lap 12. There's just 0.171s between them.
With Ducati on the back foot at the moment, this weekend looks like a great chance for both of them to stand on the top step - in Acosta's case for the first time ever in MotoGP.
Bagnaia has halved the 1.2s gap to the top on Friday, while Marquez is a few tenths closer but they are both currently over half-a-second behind Bezzecchi, on the same soft tyres.
Fabio di Giannantonio has reverted to the 2024 aero, meaning he's now on the same aero as Bagnaia, who has kept the old aero all year. Marc Marquez runs the new 2025 aero.
Halfway:
- Marco Bezzecchi
- Pedro Acosta
- Raul Fernandez
- Miguel Oliveira
- Luca Marini
- Marc Marquez
- Francesco Bagnaia
- Brad Binder
- Fabio di Giannantonio
- Enea Bastianini
While soft tyres front and rear are the popular choice this morning, Pedro Acosta is second with a medium front, while Brad Binder (8th), Fabio Quartararo (11th) have the hard front.
Marc Marquez is currently 4th and Francesco Bagnaia 7th. Ducati seem quietly confident they can make a step on a Saturday, after analysing Friday's data.
Friday leader Marco Bezzecchi is straight back on top for Aprilia after the initial laps, soft tyres front and rear.
Davide Tardozzi still refuses to confirm that Francesco Bagnaia had access to Franco Morbidelli's bike at the Misano test, despite VR46 saying that was the case.
The big news from day on was that both factory Ducati riders, newly crowned champion Marc Marquez and double Motegi winner Francesco Bagnaia, were left outside the top ten and need to fight through Qualifying 1 today.
Good morning and welcome to Crash.net's live coverage of Saturday's action at the 2025 Indonesian MotoGP.
The Moto2 class are in the final ten minutes of their final practice session, which will be followed by MotoGP FP2, Qualifying 1 and Qualifying 2.