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i only use the XD/XDR drivers to get 11spd cassettes such as the E13 ones with wider ratios
Ha, I run a bailout cassette on my 303's as it was cheaper than switching out the Zipp xdr driver!
Indeed it seems I can't run an xdr driver on these. Some strange compatibility issues explained on Road.cc
I'd only ever be running these 12 speed.
It seems that a Microspline driver is compatible with this non-boost version though. All the Microspline cassettes are 51t monsters. If only there was confirmation on what standard 12 speed Dura Ace is going to use...It pains me but no xdr is probably a deal breaker for me :(
Edit - anyone have any inclination if 12 speed DA will use Microspline? I had assumed it would but not certain
Yeah, i cant be sure @TotalShanner because i didnt experiment and succumbed to switching back to the XT cassette as everything i have is shimano 11spd - i only use the XD/XDR drivers to get 11spd cassettes such as the E13 ones with wider ratios