Pulleys and Cage Shifter Oversize Shimano Dura Ace 9100 11v Red CeramicSpeed TR

[cnighbor1]

Who is going to use these
Doesn't chain length need to be lengthed
Pulleys and Cage Shifter Oversize Shimano Dura Ace 9100 11v Red Ceramic Speed TR
and at over $500 why do it
https://www.ebay.com/p/Pulleys-and-Cage-Shifter-Oversize-Shimano-Dura-Ace-9100-11v-Red-CeramicSpeed-TR/16017418776?iid=263580018470&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%2 6asc%3D50998%26meid%3D980f1851070b4b428605908f83d1 d9ed%26pid%3D100005%26rk%3D3%26rkt%3D5%26sd%3D2535 32490523%26itm%3D263580018470&_trksid=p2047675.c100005.m1851

[R3awak3n]

saves you watts man...

[nmrt]

ahhh....charles, the age old question -- why do it?
according to george mallory, the famous mountaineer -- "because it's there".

:banana:

[dave thompson]

saves you watts man...
...all without the stigma of low cost.

[Mark McM]

saves you watts man...

Are you sure 'Watts' should be pluralized in this case? I suspect that the savings is a fraction of a Watt - at least according a study at Friction Facts:

https://www.bikeradar.com/us/gear/article/friction-facts-bigger-pulleys-really-are-more-efficient-37615/

[earlfoss]

If you can pay to play, game on. Combined with a low friction bb, clean drivetrain, and properly prepared chain, people riding near their margins will appreciate the extra watt or two. If you want to be the best possible for a race you're targeting, I think this makes sense if you have the means. For the everyday rider it makes much less sense as much more than just bike candy.

I think the smaller top wheel than in the first-gen version solves the laggy shifting issues users were experiencing too. I can dig it.