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Discussion Starter · #1 · (Edited)
Endurance suitable wheeels: ZIPP 303 Firecrest or Mavic Ksyrium Pro SL

hi there,

my aim for next year is to complete a double century, 320km, between Zurich and Geneva (act 3`0000m combined climb), I'm upgrading to a new bike: Canyon Ultimate SLX with SRAM eTap but with Ultegra crank-set.

i`m just stuck at the wheel selection:ZIPP 303 Firecrest or Mavic Ksyrium Pro SL

ZIPP 303 Firecrest great for climbing, no more heating issues from what i heard, i won't benefit much from reduced drag as i average abt 24-26km/hr

Mavic Ksyrium Pro SL: super light, exalith braking


on the other hand the ZIPPs are regarded as best all arounder, but is it worth the difference? please note i do not race, i just enjoy long rides (in summer my almost daily commute was about 100km per day: 17 to go to work and 80 on the way back), i`ve done 2x Century with decent time

many thanks for your opinions.

Cheers,
Dorin
 

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I have a set of 303's and 202's. I consider the 303's as climbing neutral to slight negative as they are little heavier than a strictly lightweight wheel but you will definitely get an advantage on a descent with these. I consider the 202's as the best all around wheel; much lighter, a little bit aero. From what I remember of Zurich your topography is rolling hills with some pretty stiff climbs - somewhat similar to where I live. If the 202 is an option, in your place I would go for that. I love both of these wheel sets, but the 202 is the one I would pick if I could have just one.

I don't have any knowledge of the Ksyriums other than what I just looked at from their website. I tend to like wheels better if they use "normal", i.e. non-proprietary spokes, as they are easier and generally cheaper to replace. Zipps use Sapim CX rays.
 

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Discussion Starter · #3 ·
thanks a mil for the tip! i need to dig deeper to see the difference between the two, as the price is identical :)
and yes you remember it correctly, rolling hills from spitting your lungs out to going down with 85km/hr (and that is in the zurich area, only 462m above sea level, not up in the mountains)
 

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Discussion Starter · #4 ·
Just a quick question: is overheating still an issue or is this a thing of the past?
Cheers,
Dorin
 

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my aim for next year is to complete a double century, 320km, between Zurich and Geneva (act 3`0000m combined climb), I'm upgrading to a new bike: Canyon Ultimate SLX with SRAM eTap but with Ultegra crank-set.

i`m just stuck at the wheel selection:ZIPP 303 Firecrest or Mavic Ksyrium Pro SL
Whatever you finally choose, just understand that the best aero wheels on the planet will save you about 7 minutes in that 320 km compared to 32 spoke wheels with box section rims. In the mountains, I would be most worried about crosswind stability.
 

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Just a quick question: is overheating still an issue or is this a thing of the past?
Cheers,
Dorin
It hasn't been for me but my descents aren't very technical and it's rare that I have to work the brakes hard. FWIW I use the Zipp pads on one set and Swiss Stop Black Prince on another, both are good.
 

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Honestly, it's not going to matter. You won't be any less tired at the end whether you choose one over the other. Pick the ones that make you look the fastest.:D
 
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