How To Tune Shimano Di2 Groupsets - Adjust Electronic Shifting

Find out how to tune and adjust your Shimano Di2 groupset in this video!
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Adjusting electronic groupsets shouldn't be a daunting task. Although it might sound complicated, tuning Shimano Di2 groupsets is, in fact, reassuringly simple.
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How to index your mechanical shifting ▶︎ gcn.eu/1SMBU8o
How to fit a Di2 groupset ▶︎ gcn.eu/1pGvnkv
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Leave us a comment below!

[@TurkiyeCumhurbaskani]

10,000 miles on my Di2 still shifts like day one, never dropped a chain. I love it

[@arturnaumiuk8135]

It is probably shortest GCN tech video. I LOVE Di2 !!! it is so simple and tool less.I LOVE Di2 !!! Have I said it again?

[@CyclingDad]

I typically have to do some minor adjustments as shown at the start when changing between wheelsets. Per the DI2 manual, I usually shift until it's making the noise then back it off x 2. Typically works pretty well.

[@slawrence33]

You can also connect your Di2 to a PC using the battery charger SM-BCR2, and that's a more economical way to reconfigure your setup.

[@briandarroch]

+Simon Lawrence as long as you are using a SM-EW90 and not a SM-EW67. Although firmware upgrades with a mix of 10 and 11 speed can cause major issues. I had Ultegra 10 speed and then upgraded the RD to 11 speed. This worked fine until I upgraded the firmware and the battery would no longer talk to the system. I needed to change the FD as well and it was then okay. I did read that the SM-EW67 isn't compatible with 11 speed or the seat pin battery!

[@kennethhowell5291]

I went from no shop touches my electronic shifters to a pro doing it for myself from listening to your video. Thank you!

[@CyclespeedTours]

THIS VIDEO HAS 2 GLARING MISTAKES. At 2.58. He says there is no micro-adjust function for the front derailleur, but there is. Go into big/big and press the trim button. You can now trim the front der. with the left lever. At 3.25 they show the Low Limit adjuster, but this is NOT IT! It is the support screw. The low limit adjuster is to the left. If you screw this in hoping to adjust the mech, you risk pushing the screw through your frame. 86 000 people just got given the wrong info.

[@GH-iw5ew]

Thanks for correcting this huge freakin mistake on low limit bolt.... Also go big cog in back and big ring in front and micro adjust the other side on the front d. But yes, Shimano even states it as far as the hidden front micro adjust. Page 72 in the dealers manual below. Caption for page "Top position electrical adjustment". 2nd error as you said they very well could punch a hole in their carbon frame if they use the support screw and think it's the low level adjustment screw lol ! Also, if they are using a braze on mount (most do with carbon frames) then they NEED to set that toe/support/"angle* park tool install video has pic of it"> but MUST have the metal support little thingy to protect the frame if the braze on doesn't reach (most don't.) See the the park tool url below..If it did not come with your di2 d, then make one it is not hard, then; super glue it and then the screw will hold it against the frame.) Page 69 the "support bolt." Btw, the adjustment of the support toe screw is not in this dealers manual and not in the Shim tech videos lol roll eyes..... Referenced below. Also, not all models of the front D have a low level adjustment screw such as I believe Ultegra R8050 so you use the electronic micro adjust feature instead....not making the mistake to adjust the support screw that it may have and f&*king up your frame. Best is to read and watch them all most importantly the park tool one below. na.s-tec.shimano.com/module/composite/3983 si.shimano.com/pdfs/dm/DM-DA0001-09-ENG.pdf?bcsi_scan_fd86d3dd427d821e=0&bcsi_scan_filename=DM-DA0001-09-ENG.pdf Front D electronic adjust: kzbin.info/www/bejne/fnrZpIxqdtmEpqs * little metal thing is included with some models and if the braze-on is not long enough then you use this beside it behind the der. www.parktool.com/blog/repair-help/di2-shimano-electronic-intelligent-system-installation This is all you need. The wiring of di2 can be a bear to thread and get the line lengths right. Also make sure to always leave extra length at the ports on the levers (your bar tape brake lines correct and getting your ergonomics set up can cause them to pull out.) But ultimately is way better then as it will be mostly trouble free for years. Where e-tap rules is initial wireless setup. Then you have to worry about changing batteries in the levers, and charging both derailleurs much more often than shimano with just one charge per month. So you hours of work time with be countless more over the years than Di2.

[@helicart]

There's another serious mistake at 0:42 The Shimano manual says to adjust the rear derailleur on the 5th sprocket (for 11 speed Di-2). Sprockets are counted from inside to out, so the 5th is 5th from inside, not outside, as this video advises.

[@sandynathan]

Fuck!!! Some glaring mistake by them, glad your on the ball.

[@rosscads]

One of the nice things about Di2 is that you can make these indexing adjustments while riding.

[@arturnaumiuk8135]

didn't think about it at first but you are perfectly right.

[@G_Dawg]

You can, i've done it, but i'll be honest its far easier to stop for a minute and do it. It is somewhat difficult to concentrate on the road, avoid traffic and listen to whats going on!

[@nathanedensor3543]

I've never tried it and would probably rather not

[@totaltrials]

Just thought I'd add a bit to this. If your Di2 drivetrain has started making noises as if it's out of alignment, I'd recommend checking to see if the hanger is straight first of all. Usually, just straightening the hanger up will return the gears to perfect working order without making any micro adjustments. Secondly, I'd check to make sure your chain isn't worn out as that can affect the performance of the gears. You don't get cable stretch or wear on DI2 cables, obviously, so bent hangers or worn parts are to be sorted before making adjustments ideally. But good video if setting up from new.

[@johnmoran8174]

GREAT! I just ordered a bike with Ultegra Di2 and was concerned about shifting and adjustment so this was an excellent video for me. Now I understand how it works and the adjustment is much simpler than I expected. GCN video are always helpful or great fun, thanks guys!

[@bernddotzauer]

if the red rings are supposed to indicate the position of the low and high limit screws on the front derailleur, the one for the low limit screw should be more to the left. the position it is in in the video is where the the support bolt is. this could be a point of confusion

[@tdmaw1092]

i would love to be able tune my Di2, i just need to find a way of affording it first!

[@philipcooper8297]

Buy a used unit.

[@bb96kjl]

Cheers Sy and GCN, after watching this tutorial I plucked up the courage to index my gears. It worked a treat and now the skipping and clicking has gone and I'm left with smooth gear changes. These videos are hugely entertaining plus provides great riding tips and motivation to enthusiasts. Thanks and keep it up!

[@austinbrough7327]

This was so useful. Just serviced a friends TT bike with Ui2, watching this made it a doddle, thanks.

[@darrenchertkow7616]

Just set my gears in 2 minutes thanks for a great video!

[@ianswinscoe7678]

GCN Guys can we have an update video to align with the new R8000 / R9100 functionality and e-tube app

[@kissCharles]

I used a hangar extension and my 3rd gear was off, this video is a life saver!! thank you GCN:))

[@MegaSniv]

With the newer Di2 groups (battery integrated in seat post) you can also use your charger as a programmer connected to your pc. I've updated the software of my di2 components like this when installing the ant+ dongle.

[@bmwflyfisher]

Si, Hard to believe this video is 2016. Just adjusted my Pinerello Prince - 2022 with the new DI-2 Bluetooth...Still works the way you describe! Thanks for the video - Bike is whisper quiet again! As always - GCN videos are the bomb!

[@wearedo999]

YES Di2 front derailleur can be micro adjusted. Put the bike in the big ring and the biggest gear on the cassette then press the button on the junction box then you are in adjustment mode for the front derailleur, then use the front derailleur shifter to adjust.

[@lucasredois1516]

Hi guys, love the show however, please check the screws for the front derailleur for the upper and lower limit screws, the low limit screw you are showing is actually the "point screw" witch give the front derailleur the orientation it needs to push the chain with more ease on to the big chain ring. It is the screw next to the “point screw” witch is the low limit. Happy Rides!!!

[@robwhite7976]

I don't need to know this but I just want to watch new GCN videos 😂

[@alexr5819]

With the new Di2 with the charging junction box you don't need that special connector. You just plug in the USB cable from the charging box to your laptop and you can tune all the settings.

[@currom22]

Thank you so much! I just adjusted my Domane with your help. Unreal! Much appreciated!

[@goonasuk]

You can also make the adjustments you mention at the end of the video with the Charging box (BCR-2), if you use the external charging junction box - i.e. with an internal battery, you only have to use PCE-1 when you have external batteries (as there is no where to plug the charging cable into the bike)

[@nathanwv222]

your can connect to your PC with the BCR2 box. it's the same piece used when charging. it comes with the interval di2 group. or you can buy it for around $85. works for me just fine. you should correct your video because that's very important info.

[@Andredecan]

I cant describe just how much I love you right now...

[@kylebuckosky7915]

actually you can micro adjust the front mech: put the rear derailleur into the easiest gear on the back and the big ring on the front. then go into the setup mode on the junction box. now you use your front shifter buttons to micro adjust the front mech. this is just so when you cross-chain the gears it shouldn't rub, and i find that it helps the functionality of the front mech.

[@warrenbeer2737]

This for me is like viewing an episode of Top Gear with Ferrari’s, I’ll never be able to afford one but I’m still interested and watching it!

[@wesw6787]

Di2 front mechs do need to be micro adjusted by putting the chain in the big ring-big sprocket position. When you do this and press long on the button of the junction box, you are able to micro adjust the front mech by clicking the front mech lever buttons. The derailleur needs to be adjusted so that the chain is as close as possible to the inner cage of the front mech, without chain rub.

[@danielwardAUS]

+Wesley Wuyts you beat me to it! I think they only introduced this in the 11-speed series, you can't do this with the old 10 speed di2

[@laurencehunt8529]

I don't have di2 but i watched the whole video just to stare at this f-in beautiful bike :D

[@cAddnan]

Got my new bike today and it was being a bit noisy going into one of the sprockets. Went into adjustment mode and fixed that shit right up. Thanks for the helpful vid!

[@jillpattison5923]

Thanks to Si Richardson and GCN- girls can do anything with a bit of help :) worked perfectly.

[@markslagle9742]

This video really helped me out today, thank you for your time and expertise.

[@MaDiViL696]

Crystal clear video. Exactly what I needed

[@denisdrc5836]

3:49 oh that phrase made me understand that the future is now :)

[@Toastybear1]

it was worth this just to hear you click through the gears.... :)

[@RixterNow]

The 9070 DuraAce and Ultegra 6870 Di2 do not require a SM-PCE1. Also would would be really helpful for this video would have been how to adjust the trim settings

[@arturnaumiuk8135]

this is exactly what this video is about... once you do the alignment as explained you are done. Do not think mechanical.

[@RixterNow]

+Artur Naumiuk not entirely true. There is a specific trim adjustment for Di2, it's not just about indexing and limit settings.

[@terrybleterrythepirate6357]

I must be in a relatively picky mood today. At the 3:24 mark of the video, the "low" limit screw is not identified correctly by the little red circle. Simon correctly points to the low limit screw, but the red indicator for the low is actually the set screw that pushes up against the frame to hold the derailleur in place as it moves. The "high" screw is appropriately identified.

[@RollinHomies]

Nice. A true lefty. Saw you hit the rear brake on your left lever. I would jacked riding your bike.

[@hugoyoung4890]

M. Carr My bike does that.

[@ruddmatt]

I think that's pretty standard on English bikes.

[@eoinleahy844]

The bit about tuning the front mech is incorrect. After setting limits etc, shift to big/big combination (cross chaining) then enter adjust mode. You micro adjust the front mech until the inboard side of the cage is almost touching the chain. Job done.

[@garretlybolt9857]

+GCN I bought my first road bike and love watching your videos.

[@mantelles]

Greetings- A huge thanks for this vid. I was able to properly index my Di2 Ultegra rear derailleur by following the instructions in this vid. Saved me trip to shop.

[@gcn]

Nice one M!

[@neuregel]

Actually the super best way to make the micro adjustments is to make the adjustments WHILE YOUR RIDING!! Its super easy and takes less than 20 seconds. If your comfortable on the road your on, or in parking lot or out on a ride. You can hit the button to turn red. I like to be in the gear that is clicking or causing the problem. Make the micro adjustments (left or right) while your riding till the clicking stops. press the button to turn off the red light then shift through while your riding to verify its all working. You don't need to dismount the bike at all. if your going up a hill it's even better to test under load. That's the beauty of DI2!!

[@kill3r111111]

so useful, been waiting for ages. cheers

[@cup_and_cone]

If your DI2 goes out of adjustment, step one is use a derailleur hanger alignment gauge.

[@eugenelawrence8517]

PS. the Di2 Interface Box is the internal battery Di2 kit's charger. so if you have the internal battery, you have the PC interface box already.

[@BigAl01840]

I thought today's maintenance Monday video was going to be what tools to take on a training camp!? 😐😧 loved this video too though! :)

[@daviddennier8554]

This video has saved me many times!

[@NAJMFAN]

Now thats what i call a beautiful bike

[@colincampbell3695]

Nice and clear advice, thanks!

[@rwood4790]

I just successfully did this, way easier than my mechanical groupset. Also caught myself saying ADJUSTMENT MODE to my bemused wife as I talked her though the fascinating process 😉

[@JesseReith]

4:07 I cringed hearing the ring knocking on the carbon frame...

[@theWolfXLIV]

+Jesse Reith Sounds pretty nice.

[@danfuerthgillis4483]

You do realize that is the test I do when I take my carbon bike out. I have no idea why people on carbons are not doing this check on critical junctions of the bike. I use a quarter tap test to hear the sound of the carbon frame on critical sections. If you ride on Canadian roads ( more like war zones) it is critical to tap test the frame regardless if you have a $7000 carbon frame or $1200 carbon due to the frame getting some major impacts. We can't ride them in the winter here they have to also be stored indoors.

[@Hjydfdhd7]

Any body watching this just because its GCN even though you dont have di2??

[@jensenyap803]

Hjydfdhd7 , nope! I got it and i wanna learn!

[@zachberend2945]

Thank you for making this video!

[@hansbiskup8164]

"There is no micro adjustment for your front derailleur".....sorry Sy not true.....put chain in big ring front/rear and hit the "adjustment mode" butten and you can micro adjust the front derailleur for "chain rub"

[@havefunandbikestuff]

Perfect! Thanks younger Si! From guy in 2023.

[@ScottyCycles]

I love my Di2, self-trimming regardless of the gear selection.

[@briandarroch]

I believe the 11 speed Ultegra Di2 does have front derailleur micro adjustment, I know it wasn't available on the 10 speed version

[@Digi20]

true

[@antontkacz6693]

Please do a competition on the very nice zipp wheels on the wall. It really seems that you do not need them :D.

[@curtmcd]

I had my bike shop install the wireless unit (EW-WU111 ANT+/Bluetooth LE) module so I can tune everything through the E-Tube app on my phone. I'm not sure if that turns out to be cheaper than buying the cable or not. Mine was $90, having been installed for free when I bought the bike.

[@Miisile]

What di2 version/model do you have? I an wondering if the ew-wu111 would work on my di2. By di2 uses the SM-BTR1 battery not the seat tube battery.

[@curtmcd]

@@Miisile Not sure, unfortunately. I think I have the BT-DN110 battery. Time for web research and LBS consultation!

[@sdolman79]

99% of us just watching because the misses is watching Enders or Corrie, I can just about afford 105.

[@PerRutkowski]

+Steven Dolman so you should go to work instead of wasting time on youtube :)

[@acer8123]

Just a suggestion but can you make a video of a full gcn office tour?

[@robnoble5608]

Great video, but doesn't everyone who has Di2 need the 'PC' kit in order to charge their Di2 battery?...or should we all head to out LBS for a battery charge too?

[@joejoe8948]

Very helpful, thanks!!!

[@kennethhowell5291]

You are the best! Thank you very much!

[@jhangirtejani1456]

Excellent Video.. thanks!

[@brunokabbaz5779]

not thaaaaat useful to the majority of mere mortals like myself, but hey, nice video, at least I know in theory how to adjust it

[@rodcosta3603]

Brilliant! Thanks Si👌🏻

[@robinooooj]

could you guys do a video for juniors explaining how to limit their gears without having to change the cassette and just by adjusting the rear derailer, Cheers lads

[@robinooooj]

yeah thanks i've been limiting my gears for the past year or so i just think it would be really useful if the guys at gcn could do a video on it but cheers for the advice, it'll go a long way!

[@grawe87]

I love that bike!

[@razordimeback]

I see you where all the money went, highest bike in the aeroad line, zipp 808 NSW wheels... crappy metal bottle cages ahaha, nice one GCN ;)

[@jamesdarcy3022]

Thanks very much! sorted

[@markrskinner]

The brake levers are the right way round.

[@Johnny641]

Those alloy Bidon cages on that carbon frame offend me, please change them out asap Simon !!!

[@brianmoore1164]

That bike and those big Zipp wheels makes me drool!

[@markspaul9426]

I love that bike in red

[@user-yx7dp2pl8t]

Next time I'm late to a group ride, ''sorry lads forgot to index my di2''. jk I don't have friends. BibleThump

[@philippebelair3372]

Bonne explication SUPER , GOOD explanation A+

[@ltddivers]

love this bike

[@smasherocho]

Why do you need to shift to the middle of the cassette when using the micro-adjust function to tune the rear mech?

[@tonimichelcaubet]

Tried the adjusting mode with the small plate and I made it smooth, but now it's not smooth on the bigger plate. Shall I try to play with the screws?

[@highlandmatt3869]

Thumbs up, cheers Si

[@dariuszm8283]

Hi, will electronic shifting work with TACX neo? I mean will I have each time to setup electonic shifting after connect my bike to TACX?

[@dominicsharkey4889]

Can you not also use the battery charger box to connect to E-tube?

[@junkieball]

Great video. A quick question i have ultregra di2 the gears are running smooth but when going up and down the block i need to do a double click to get the bike to change up and down passed the 3 chain ring in either direction all other gears work with a single click. Could this be an indexing problem or something else?

[@malina.h.6599]

That was a lot of GCN-bottels in the right under the TV😄

[@jacopodesanctis1229]

why do you have the rear brake on the left lever

[@linkelucky]

+Jack SuperSayan it's because he's british. They do it the other way around just like they ride on the left side of he road.

[@markwilson7013]

+linkelucky Also known as moto or motorcycle style as the front brake is on the right the same motorcycles. Kinda makes you wonder why bicycles have the front brake on the left at all. Must be confusing if you're a bike rider and a motorcyclist and your front brake moves about depending on what your on :)

[@tamiltigerforever20]

Hi for 11 Speed which position I should set for adjustment mode big chaine ring or small one?.Thank you

[@SwedishHouseFifa]

Many people would just dream to have that bike and with di2 wtf :P

[@zakyrachmadi3762]

I had a crash and the cage for my jockey wheels are a little bit wonky, how do I fix this without replacing the cage?

[@renzcec]

crispy sti lever , crispy chain , crispy cassettes :)

[@scottwhittet5226]

what about a 2018 UDi2 without a junction box ? how do you enter the adjust mode?

[@chrisrobins954]

NEED HELP! lowest gear in the back will stay in place for five seconds then go down one gear.

[@PeowPeowPeowLasers]

I think if the jockey wheels are causing the misalignment it's probably a better idea to replace them. They're only cheap.

[@Alexclk230]

Hi, cam I upgrade a 6770 to 11 speed?How can I do it?Will I have issues on shifying?Thank you.

[@Phaidrus]

Good I stayed clear of Di2 and opted for the good ole mechanical Dura Ace as I use a Mac und don't like PCs.

[@boyetz88]

I'm using an ultegra di2 R8050, how do l keep my rear dereileur from shifting automatically from the 34 teeth cog to 32 teeth cog? I seems that it always shift from the lowest gear(34t) to the 2nd lowest gear(32t) automatically after about 15secs.

[@kchapdaily]

With the new di2 TT single button bar end shifters, can we set up the firmware to shift like sram etap? i would much rather do this than trust the synchro shift double shift thing

[@bikedawg]

How do you adjust the trim?

[@timsmith7164]

The rear derailleur is shifting poorly only from the easiest gear to the second easiest gear. When I set up in the middle it is not a problem. Is there a way to adjust the (easiest) inner most gear?

[@Digi20]

check if your deraileur hanger is not bend. if all looks fine, is setup correctly and still does not really work, i would recommend tryying another casette.