Need help upgrading my gravel bike to Di2

Discuss light weight issues concerning road bikes & parts.
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Noctiluxx
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Location: Southern California

by Noctiluxx

Hi, I have a new Giant Revolt Advanced 0 gravel bike which currently has Shimano Ultegra hydraulic drivetrain with the rear derailleur being the RX model. I'm looking to upgrade to Ultegra Di2 and need help with the component selection. I believe the replacement rear derailleur needs to be the Ultegra 805 Di2 clutch, with the front derailleur Ultegra 8050 Di2. And of course I need battery, cables, and junction box. Now the shifters. I currently have the Ultegra (8000 series) hydro shifters and calieprs. Which model Di2 shifters do I need to replace these? Also can I use my existing brake calipers do I need to buy the new shifters complete with calipers? Thanks!
Last edited by Noctiluxx on Mon Apr 22, 2019 4:42 pm, edited 1 time in total.
2018 Bianchi Oltre XR4, (Celeste Matt)
2018 De Rosa SK Pininfarina (Blu)
2019 Trek Madone SLR (Rage Red)
2019 Giant TCR Advanced SL (Chameleon Blue)
2019 Giant Revolt Advanced 0

spdntrxi
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Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

RX805 is the clutched RD
you are correct on the FD
Shifters are 8070
You can use you existing hydralic calipers ..hoses should be I think BH59

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ultimobici
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by ultimobici

spdntrxi wrote:RX805 is the clutched RD
you are correct on the FD
Shifters are 8070
You can use you existing hydralic calipers ..hoses should be I think BH59
If you're upgrading to R8050 series di2 you'll need the following components
RD-RX805 rear mech
FD-R8050 front mech
ST-R8070 levers
Original calipers
If these are the R8070 model you'll need BH90-JK hoses
The rest of the parts will be the usual di2 cables, battery etc




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spdntrxi
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by spdntrxi

I checked.. BH90 is spot on

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ultimobici
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by ultimobici

Thanks. It’s what I do for a living.


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deepakvrao
Posts: 142
Joined: Mon Feb 21, 2011 4:44 am

by deepakvrao

ultimobici wrote:
Mon Apr 22, 2019 5:19 pm
spdntrxi wrote:RX805 is the clutched RD
you are correct on the FD
Shifters are 8070
You can use you existing hydralic calipers ..hoses should be I think BH59
If you're upgrading to R8050 series di2 you'll need the following components
RD-RX805 rear mech
FD-R8050 front mech
ST-R8070 levers
Original calipers
If these are the R8070 model you'll need BH90-JK hoses
The rest of the parts will be the usual di2 cables, battery etc




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Curious. Why not the RD 8050? And whats the difference?

spdntrxi
Posts: 3115
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

He said he wanted clutched Rd... whether you really need it or not is another story. Before I switched to XTR and 1x on my gravel bike... I did not use the clutch very often on the rx805.

SilentDrone
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Joined: Fri Sep 22, 2017 5:55 pm

by SilentDrone

Is it possible to buy the shifters only without the calipers? Where? I’ve looked at doing this upgrade for the DA 9100 mechanical-hydro to DA Di2 9170 but it’s hard to find anyone selling just the shifters without the calipers.

Other than eBay, where can one get the shifters only without calipers?



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zebra
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Joined: Thu Oct 08, 2015 2:02 pm

by zebra

Is it not better just to plump for the whole groupset money wise?

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Noctiluxx
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Joined: Tue Feb 07, 2017 7:17 pm
Location: Southern California

by Noctiluxx

zebra wrote:
Mon Apr 22, 2019 10:32 pm
Is it not better just to plump for the whole groupset money wise?
No, not really. The "Di2 upgrade" groupset from Merlins comes with brake calipers I already own and the wrong rear derailleur.
2018 Bianchi Oltre XR4, (Celeste Matt)
2018 De Rosa SK Pininfarina (Blu)
2019 Trek Madone SLR (Rage Red)
2019 Giant TCR Advanced SL (Chameleon Blue)
2019 Giant Revolt Advanced 0

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FIJIGabe
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Joined: Tue Sep 11, 2012 6:07 pm
Location: The Lone Star State

by FIJIGabe

Unfortunately, I don't think Shimano sells the shifters w/o the calipers. I lucked out when I upgraded my bike, that I was able to find a set of ST-785's without the calipers, but I was prepared to pay for the whole set, and try to sell the new calipers (since my bike has post-mount brakes and not flat-mount).

If you're in the US, contact EuroBikeParts.com. I believe they have the RD-805 rear derailleurs as an upgrade to the groupset, for only a minimal upcharge.
Madone 9 - https://bit.ly/2Nqedbn
Emonda SLR - https://bit.ly/2UK5FP8
Crockett - https://bit.ly/2Xem4sk

Madone 5, Cobia. I own a lot of Treks.

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Noctiluxx
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Location: Southern California

by Noctiluxx

FIJIGabe wrote:
Tue Apr 23, 2019 3:01 pm
Unfortunately, I don't think Shimano sells the shifters w/o the calipers. I lucked out when I upgraded my bike, that I was able to find a set of ST-785's without the calipers, but I was prepared to pay for the whole set, and try to sell the new calipers (since my bike has post-mount brakes and not flat-mount).

If you're in the US, contact EuroBikeParts.com. I believe they have the RD-805 rear derailleurs as an upgrade to the groupset, for only a minimal upcharge.
Jenson, and Glory Cycles sell the Ultegra 8070 di2 hydro shifters without calipers for around $400.
2018 Bianchi Oltre XR4, (Celeste Matt)
2018 De Rosa SK Pininfarina (Blu)
2019 Trek Madone SLR (Rage Red)
2019 Giant TCR Advanced SL (Chameleon Blue)
2019 Giant Revolt Advanced 0

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FIJIGabe
Posts: 1848
Joined: Tue Sep 11, 2012 6:07 pm
Location: The Lone Star State

by FIJIGabe

That's a pretty decent price, TBH. I was under the impression that the levers and calipers came together as a set, with the matching hose and hardware. If you can get it from there, do it.
Madone 9 - https://bit.ly/2Nqedbn
Emonda SLR - https://bit.ly/2UK5FP8
Crockett - https://bit.ly/2Xem4sk

Madone 5, Cobia. I own a lot of Treks.

SilentDrone
Posts: 200
Joined: Fri Sep 22, 2017 5:55 pm

by SilentDrone

Best price I’ve seen is Merlin cycles. Kits to upgrade to Di2 are $1050 for R8070 upgrade and $1650 for R9170 upgrade kit.

Problem for me is I live In USA and don’t know what to expect for customs duties. Otherwise these are good prices IMO.


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by Weenie


dricked
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Joined: Tue Jan 09, 2018 1:57 pm

by dricked

I bought my 9170 upgrade kit from Merlin and had it shipped to Canada. I paid our regular sales tax and nothing more.

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