Brad Binder shared that Misano’s high and aggressive kerbs may have been the reason for the strange chain problems that hit both him and his team-mate Pedro Acosta during the San Marino Grand Prix weekend.

KTM had one of its most difficult race weekends of the 2025 season at Misano. Out of the four riders, only Brad Binder managed to finish the grand prix and score points. But even his preparations were badly affected when the chain on his RC16 broke twice during practice, once on Friday and again on Saturday.

Acosta suffered the same problem in the race itself. After making a brilliant start and moving from ninth on the grid to fourth place, right behind Gresini’s Alex Márquez, he was forced to retire on lap eight when his chain came off.

Binder admitted he had never experienced this type of issue before.

“We’ve never lost a chain before, ever,” the South African explained to Motorsport.com. “But Misano has those massive double kerbs at Turn 6. If you hit them with a lot of lean angle, just as the ride height device drops and you change gear, the bike vibrates so much that the chain can jump off.

I don’t think it’s a big technical problem with the bike itself, but it’s still pretty frustrating that it happened three times in one weekend.”

Acosta, who had been fighting to rescue a difficult weekend for KTM, was visibly angry after pulling over and abandoning his bike. In frustration, he even made a rude gesture towards the KTM as he walked away.

Speaking later, he admitted it was hard to keep calm.

“After such a hard weekend, to come back from ninth and fight near the front was not easy. I don’t think we had the pace for the podium, but maybe fourth was possible, because Alex [Márquez] was starting to struggle,” Acosta said to MotoGP.com.

“When you’re making good passes, riding well, and then something like this happens, it’s difficult to accept. But this is motorsport – mechanical failures can happen.

I’ve been in MotoGP for a year and a half, and this never happened to me before. That’s why it’s disappointing. I was fast enough to at least finish fourth, and after all the work we did this weekend, it hurts more. We were starting to find good consistency inside the top five.”

KTM now faces the task of investigating the rare chain failures before the next round of the championship. Both riders remain confident that the issue is linked to Misano’s unique kerbs rather than a deeper problem with the RC16.