SuperSix EVO seatpost size

The 2012 generation SuperSix EVO uses a 27.2mm diameter seatpost and a 30.0mm seat binder clamp. Part number for the clamp is KP196 and is available in black and green.

Update: The 2012-2016 generation SuperSix EVO uses 27.2mm seatposts, the 2016-2019 SuperSix EVO uses a 25.4mm seatpost. Find 25.4mm seatposts on CannondaleExperts.com here: https://www.cannondaleexperts.com/254mm-Seatposts_c_1507.html

The seatpost clamp for the EVO with 25.4mm post uses the KP397 seatpost collar.

https://www.cannondaleexperts.com/Cannondale-254mm-Seatpost-Seatbinder-Clamp–KP397_p_5151.html