What is the best groupset over the past 25 years (1998-2023) in your opinion?

[fguki]

just found it

I ride that group on various bikes since 2013. guess im lucky that i did not get one of the 4 crank sets that cracked out of the 400.000 sold.

 

[bikeworkshop]

I think at least 3 came in our shop broken.
We must represent about 0.00001% of global shimano sales and service. I wouldn't ride them myself.

Plenty to scroll through.
On these models the 2 halves were bonded together

We didn't photograph the broken ones and post online, we tossed them in the scrap bin as pieces of race- level equipment that had reached the end of their brief lives

 

[ferrus]

Campag Record Ti 9 spd for me. Beautiful, excellent function, durable, square taper BB. Very little plastic.

Oh..and those C9 chains are the best I’ve used. Fine shifting and at least as long-lasting as a Rohloff.

 

[LondonClassic]

How did that happen? Was that a "common" failure? Do you have any proof or documents about it? If that was a common failure of that groupset, I am very sure there is plenty of documents, threads or info about it out there.

Or was that some african lorry that blew over some random biker in Spain or a sledgehammer that demolished the bike and a pic was taken to make some weird story about alleged failing 6800 Ultegra cranks?

Yes common failure that almost broke the cycling interweb a while back. Here's the AI summary:

Shimano's 11-speed Ultegra and Dura-Ace cranksets have been recalled due to a risk of the crankset's bonded construction separating and breaking, which could lead to a crash:

• Number of affected units: 2.8 million units globally
  
  
  
• Number of reported incidents: 4,519 incidents in the US and Canada
  
  
  
• Number of injuries: Six injuries, including bone fractures, joint displacement, and lacerations
  
  
  
• Model numbers affected: Ultegra FC-6800, Ultegra FC-R8000, Dura-Ace FC-9000, Dura-Ace FC-R9100, and Dura-Ace FC-R9100-P
  
  
  
• Production years affected: Manufactured prior to 2019

 

[grantoury]

Hopefully they go back to the design of the fc7400 and 6400, now they learned their lesson...