Quote:
Originally Posted by echappist
I wonder how my SRM Dura Ace 9000 crankarms will be handled. Bought new from SRM in Sept 2019 and indicated to be made by Shimano in 2016...
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The SRM DA9000 powermeters (and the SRM DA7800 and DA7900 PM's before them) were built on a 7800 crank chassis. Toward the end, Shimano started manufacturing special 7800 cranks for SRM - they were labeled as FC-SR70 cranks by Shimano. These were the ones that were painted to look like FC-9000 DA cranksets with the two tone finish.
You probably have those SR70 cranks.
Shimano tired of providing cranks for SRM when they launched their 9000 powermeter and SRM had to look to alternate cranksets. It was around this time that they began developing their Origin crank chassis that most of their powermeters are built around now.