Did my search and found very few reviews on the RS8 crankarm setup especially with heavier riders. I made a post a few days ago asking about the ISIS drive vs X-Type but it drifted off unanswered. This is more specific towards the RS8 and stiffness.
I snagged a Crank Bros Cobalt Ti BB so I'm set on ISIS now.
With that said, any 200+ pound riders run the RS8 without any flex issues? A few said no problems, a few said flexy. The ones that said they were flexy didn't really specify their RTR weight.
The RS7 would naturally be plan B which has decent reviews.
FWIW, I'm going with a Duo setup..Just trying to really decide RS7 or RS8.
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