It’s a Bontrager Aeolus 9.0 circa 2009/2010
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I would just buy a machined cassette. Much easier than upgrading the freehub.
These have worked great for me:
https://www.ebay.com/itm/SHIMANO-ULTEGRA-CS-R8000-11-28-11-SPEED-CASSETTE-MODIFIED-TO-FIT-10-SPEED-WHEEL/333197089703?hash=item4d94181ba7:g:AgIAAOSw9fRZ2Dqc
Also have used Lasco but they are a bit pricey:
https://www.lascoconcept.com/en/11s-cassette/
Thank you!
Are you asking if the hub on it will accept an 11-speed cassette?
ETA. If so, I have a similar question about my 2013 Bontrager RXL wheel.
Um, wow wait. So I have a Zipp 808 10 speed only and now have an 11 speed bike. I was about to sell the wheel and instead can just buy this cassette. Thank you!
How do they do it, they machine down the gaps between the chain rings, not sure I follow?
They just machine the extra 1.8mm on the back of the cassette to force it to slide on a bit further. Works like a charm
I’ve run them on a Sub 9 disc, 900 disc, and a 404 that all had 10spd hubs. Way cheaper than upgrading to a new wheelset
Edit: 1.8mm not 1.3mm
Uhhhmmm, a hub cassette body is like $35 online and takes like 5 minutes to swap. What’s so hard or expensive about that?
Then you can just use a normal cassette.
Just research the wheel and which body to buy. Someone will have done it. I’d rather do that than spend premium on a machined cassette.
Some folks also take a file to the body if they have clearance at the spokes (ie, you don’t run a 23t biggest cog).
I did the body swap on my Giant PSLR wheelset to 11spd.
What are you talking about? You will still run into the issue that 11 cogs will not fit onto a 10spd freehub body. That is the entire point of machining the cassette body down by 1.8mm. If you have access to a CNC machine or a local shop, you could buy a cheap 11spd Ultegra/Force cassette and do it yourself to save $50-80.
Uhhhmmm, a hub cassette body is like $35 online and takes like 5 minutes to swap. What’s so hard or expensive about that?
Then you can just use a normal cassette.
Just research the wheel and which body to buy. Someone will have done it. I’d rather do that than spend premium on a machined cassette.
Some folks also take a file to the body if they have clearance at the spokes (ie, you don’t run a 23t biggest cog).
I did the body swap on my Giant PSLR wheelset to 11spd.
That’s not an option with a lot of wheels. I’m using specialized trispokes and wouldn’t be able to swap the cassette body, because the wheel can’t be re-dished
He’s not talking about redishing the wheel. You can either machine the cassette body or the cassette to get the gears to slide further inboard. Nothing else needs to be changed.
As he mentions, clearance can be an issue if the hub was optimized for 10spd, as there won’t be room between the spokes and largest cog. If you use a 28t or bigger though, pretty much any will fit.
An Ultegra 11-34, 11 speed cassette will fit on a 10 speed hub
Shimano Ultegra CS-HG800 11-Speed 11-34 Cassette
Also, I thought there was 1.8mm difference and not 1.3mm
That’s how much I had a friend take off a cassette body to convert one 10 speed wheel to an 11 speed. That cassette body had enough material on it to do so.
It’s a Bontrager Aeolus 9.0 circa 2009/2010
You will be able to make your wheel 11 speed by replacing the freehub body with **W431450 **which you can order in from your Bontrager/Trek dealer.
He’s not talking about redishing the wheel. You can either machine the cassette body or the cassette to get the gears to slide further inboard. Nothing else needs to be changed.
As he mentions, clearance can be an issue if the hub was optimized for 10spd, as there won’t be room between the spokes and largest cog. If you use a 28t or bigger though, pretty much any will fit.
No, the person I was responding to was talking about replacing the freehub body. The 11s freehub body is longer than the 8-9-10s one, so the wheel needs to be re-dished to get the tire in the center of the frame (in most cases)…
Machining the cassette or cassette body is a different matter.
The difference is actually 1.85mm.
It’s a Bontrager Aeolus 9.0 circa 2009/2010
You will be able to make your wheel 11 speed by replacing the freehub body with **W431450 **which you can order in from your Bontrager/Trek dealer.
Winner winner chicken dinner.
I knew you could, I just wasn’t going to look up the specific part for his bike.
Kudos to Mitch@Trek.
The 11s freehub body is longer than the 8-9-10s one, so the wheel needs to be re-dished to get the tire in the center of the frame (in most cases)…
Only if the new freehub also requires axle mods. If it’s just the freehub, then you won’t need to dish the wheel.
generally no need to redish when going to 11 whether xd driver or normal. New rotor or AXS 12 needs a redish.
In terms of machining enough people have done it specifically with Ultegra that it is probably ok (lots of meat back there) but definitely hasn’t been tested for safety etc. No way in hell would I be selling them.
I wouldn’t machine a sram or DA cassette.
Maurice
Thank you!
Hi Mitch,
Would this be the same part number for wheels that came with my 2012 Speed Concept 7.8 (Aura 5 i believe)?
Page 4 of this document
http://www.gbcycles.co.uk/PDF/trek_hub_bearing_qrg.pdf
Aura 5.0 yes
Aura 5.0 TLR yes
.