Originally Posted by
evan326
I believe the SL and old silver SI can work with the modern spindles, the length of the spindles could be an issue if your bike is newer than 2015
104mm is for the 68mm shell, 109mm spindle is for the 73mm shell.
Thanks, I've been trying to figure out what will and what will not work with my frame and sent an email to Cannondale Experts for a parts list. I did find a deal on some new SISL (not SISL2) crank arms that would fit between the Si and Sisl2 you displayed weighing 138g ea.
My only issue now is I keep looking at the new Ultegra crank which costs less than just the SISL arms themselves. I'm somewhat of a weight weenie so having the Hollowgram SISL arms with a 10 arm 52/36 spidering would save me right at 200g compared to the new Ultegra crank and wheels mfg BB30 to Shimano adapters.
