Still can't work out quite why removing this little bit of rubber makes such a difference (or why Shimano add it to the shifter in the first place) but it does! So grateful that this has been posted. I'd spent ages and ages mucking about with cable tension and adjusting the limit screws - all to no avail. Now fixed in 10 seconds! Wonderful!!!

That's been bugging for months! You sir, have made a dull middle aged man very happy. Great video with great explanation and close ups.

Hey brother, you are my superhero. I had a problem with the STI for months and no mechanic was able to eliminate the problem. Thank you for giving us all this brilliant solution. Congratulations from a friend from Brazil. : )

Finally a bike video tutorial on how to fix something that is an actual problem that occurs and isn't some workshop purpose made problem that is "fixed" in 2 seconds. Keep making videos like this! 💯

Spent hours trying to work out why my R8000 wouldn't trim up on the big ring. Tried everything, and tried this fix...worked straight away.

Well it's all been said below but full of admiration for the fix, worked on my R8000 after similar symptoms and period of puzzlement. Mine wasn't just increased resistance, it just *wouldn't* shift until an arbitrary amount or playing around with both levers finally yielded the 'click'. And I only started looking for how to change a paddle (inner paddle broke on another bike with R8020 after a fall) and somehow I got here. Shame YT didn't send me here the first time I looked around. Anyway you're a star, thanks again.

That was it, fixed it in about 10 seconds, you are the man! Thanks for taking the time to post this video. Gotta love KZread and this community.

Thanks a lot! this solved my front derailleur shifter problem. I usually fix all issues on my bikes but this one was hard to figure out what the problem was, after hours trying different things without success looked for help and found your video, it worked perfectly and just took few minutes, man you really saved me a trip to my local shop, really appreciate it!

I cannot believe it.... Thank you for this fix. I went to replace the shifting cable and that whole process was new and incredibly frustrating to me and still it didn't work. I am so mad that the fix was this simple, thank you for discovering it.

Thanks for the video! Shimano techs that I talked to didn't have a solution and recommended replacing shifter. Works great!

Wow! That is such a simple fix for a very persistent problem. Thank you so much for taking the time and effort to explore the problem, and gargantuan chapeau for figuring it out 👍🏼👊🏼

I just bought a new shifter because of this same issue 😑. You're a wizard! Thank you. Going to see the other shifter now 😂

Amazing, thanks for that. Saved me a lot of frustration and potentially buying a whole new shifter!

Are you kidding me? My Sora shifter had same issue, I was really close of buying new unit and I took off that rubber piece mentioned. Shifter works better than ever now! Easiest fix on a bike ever, thank you so much

Another happy viewer here :D Both a new ultegra shifter set, then went to search for a 'how to' video and found this solution. You're the man!

Typical for this shifter ! 3 people around me had to replace it because of this issue. To me, the root cause comes from a lack of sliding in the front mech cable. They then start to force on the lever and they damage it somewhere. My advice now, ALWAYS replace the front cable and cable housing when it become difficult. Don't wait

Genius! I've been messing with my shifter for days now and just had a long walk home because it completely stuck.

I have been looking everywhere and could not figure this out. So happy, this fixed it and I can not believe it. Thank you so much!!! The Design of Shimpanso STI leavers is still a mistery to me.

Just had the same problem with one of mine. Looks like the spring loaded black paw, the little bit in the vid that either grabs the cam or should float over it, was the issue in my case. At the end of it there is both a rounded bit for sliding over the cam and a flat bit for engaging it. It is really small to see. The flat and the round meet to form an edge, this edge had developed a slight sharp burr over time, I think this is what is actually causing the issue. I used a flat needle file to flatten/soften the burr. This allowed shifting again. The paw is driven by a tiny coiled hair spring, I displaced this when I was using the file. It was very difficult to get back in place so be very careful if taking a file to it. That along with this fix worked great. Would not have spotted the issue if it was not for this video. 10/10 for posting this one.

That was the answer to my problem, you saved me 160 euros, thank you...

Also had to bought a new shifter. After watching this video, I have now one spare :-) Thanks for this video.

You absolute legend!! Works like a charm!❤

You just saved me a new shifter. Thankyou.

Thanks for sharing, My shifter also troubled me with doing this kind of stuff from time to time. Some days it's working some days it is giving the same issue. I was not able to figure out what caused that lock yet but now I have something to work with before I got to exchange the whole lever

Amazing, i’m having that exact issue. Going to see if that is my issue….will check back.

@lolbubs11111 I had the same issue, tried what the video recommended but no luck. I then removed the mechanism and saw that the white cable guide was broken inside and interfering with the turning of the mechanism. Problem solved, it works perfectly without the cable guide. Now I just have to fine a replacement cable guide, easier said than done when you live in South Africa. The white cable guide is situated underneath the transparent cover, it may be possible but I'm not sure if you can remove it with a long nose plier without removing the mechanism. If you need to remove the mechanism, it's quite simple: there is a pin covering the bolt, pull this pin out with a long nose plier, the bolt is reverse thread so it turns out clockwise. Once the bolt is out, the mechanism comes out in one piece quite easily. You don't have to worry about springs coming out, it comes out as a unit.

Incredible after dismounting all the shifter (105 not ultegra) I found this video and... Waaaah magically it runs !

Worked! You’re a genius!!

This guy needs a raise

First or all thanks a lot for your video. If removing the rubber on the handle helped, check if the main lever support is still in tack as mentioned in a previous comment. It's a tiny plastic spacer that breaks frequently and causes the whole problem. It's mentioned in a previous comment 8 months ago so it might be to far down for people to see

After watching I went to my bike and remove that small piece of rubber and it works (test on a bike stand) 105 10sp group set 👍

Great solution thanks for posting this has fixed my issue.

Well worked out!

Same issue I'm having...will try this and hopefully it gets rid of my issue as well

Amazing advice. Works great! Thank you thank you thank you!

i had the same problem, i tighten the shifting mechanism to the shifter body with a pin spanner, it worked also. need to remove shifter from the clamp and you will see the nut.

Thank you so much. Crazy that you were able to fix this issue so cleverly. So much nicer to ride without this frustration.

Saved me hours, thank you.

You bloody legend. nice one!!

I have the same issue with my durace shifter , will try this out and hopefully my troubles will be gone

That is brilliant! I just removed it and that is it

Doing Gods work

Thank you!

Thank you so much!!!! I was about to buy a new shifter, then I tryed your fix and it worked. But dont you think that it will be a problem later when the small things inside is further worn down? Great video!!!!

Hi, I have slight correction. Problem is caused by the "spacer". I have GRX group-set and it has same mechanism. In my case bike fell down and lever fell on stone. Lever broke the "spacer" and in one moment I wasn't able to shift. In your case that spacer is just worn out too much. Replace it and everything will be OK. Part number: Y63X80000, EAN: 4524667988694. The rubber spacer down there is against rattling. The "bottom leg" must be pushed first to shift on bigger sprocket. I'm still not able to understand WHY Shimano used 3x6 plastic component that is crucial for shifting? And GRX should be designed for offroad .. one hit and you are out of race/trip. Also in Europe this part is not in stock ... sooo only option probably will be design it and 3D print it myself. :(

@Isaac-Draper

Жыл бұрын

That part is called the main lever support by Shimano, I bought five spares a few weeks ago as they keep snapping on my shifter. I've seen an example of someone 3D printing an oversized one to fix this issue. Seems like a really weird design choice on Shimano's part

@rosallin

Жыл бұрын

@@Isaac-Draper Fascinating is that Shimano used this part in all these components: - Dura-Ace ST-R9120, ST-R9100, ST-9001 - Ultegra ST-R8025, ST-R8020, ST-R8000, ST-6800 - 105 ST-R7025, ST-R7020, ST-R7000, ST-5800 - Tiagra ST-4725, ST-4720, ST-4703, ST-4700 - GRX ST-RX810-LA, ST-RX810, ST-RX600, ST-RX400 - ST-RS685 Insane! This part will wear out literally in no time even by normal use. On top it is impossible to buy at Shimano dealers. Such a little cheap part can ruin your pricy TOP component and your ride. And let you without shifting many kilometers from home. 3D printers saved the world again.

I had this issue from the left shifter for months and I bought a new right shifter because I felt and it was destroyed, after installing the right one I tried it with the cable in and guess what... same issue that in the video (it's brand new from Shimano)... I thought your video would solve my issue, but even without this plastif part it doesn't change anything. :/

!! Do not cut rubber, try to lube before!! Before cuting.. - clean mechanism with degreaser and air pressure. Lube it and try to move mechanism. After several moves lube begin works and mechanism starts shifting up and down (for me). Nice and detailed video about dissasembling cover and it helps me understand how it works.

@oranjid

7 ай бұрын

nothing is cut here. you can just remove that rubber spacer and put it back on. It is not damaging anything and just fixing a minor leaver adjustment problem that does not make the hook disengage. This is not a lubrication issue.

Fucking Legend !!!! works on a tigra 4700 just as well, but the small lever fall behind the big one if your not carefull , migth cut a bit off of it so that it doest get stuck

L.I.F.E.S.A.F.E.R. !!!!

My brifter has a similar seeming problem, but this solution didn't work for me, unfortunately.

@NikolaiStoikof

9 ай бұрын

I had the same issue, tried what the video recommended but no luck. I then removed the mechanism and saw that the white cable guide was broken inside and interfering with the turning of the mechanism. Problem solved, it works perfectly without the cable guide. Now I just have to fine a replacement cable guide, easier said than done when you live in South Africa. The white cable guide is situated underneath the transparent cover, it may be possible but I'm not sure if you can remove it with a long nose plier without removing the mechanism. If you need to remove the mechanism, it's quite simple: there is a pin covering the bolt, pull this pin out with a long nose plier, the bolt is reverse thread so it turns out clockwise. Once the bolt is out, the mechanism comes out in one piece quite easily. You don't have to worry about springs coming out, it comes out as a unit.

Like a car engine 😅

This also worked for me on 105. 3 hours of spraying with lubricant and playing with the tolerances got me nowhere, and then KZread recommended this video to me and it worked as soon as I took the rubber off!