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Questions tagged [shimano]

Shimano brand bicycle components. (No need to use if Shimano is an incidental part of the question.)

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24 votes
7 answers
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Does this chainring need to be replaced?

Here is a closeup of my triple: All three rings are Shimano Ultegra and have never been changed. They probably have at least 12000+ km on them. I've been pretty good about changing the chain ...
darkcanuck's user avatar
  • 10.9k
24 votes
1 answer
7k views

Why is Shimano's 105 groupset called 105?

Shimano's current road lineup is Claris / Sora / Tiagra / 105 / Ultegra / Duraace 105 stands out as odd because its a number. Is there some special meaning ? Research 105 was released in 1983 as a ...
Criggie's user avatar
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19 votes
3 answers
9k views

What exactly is the "clutch" doing on a Shimano M8100 rear derailleur?

My new Shimano 12s XT 8100 rear derailleur has the switch with on and off positions. From that I found on the web, it is a "clutch" and I must turn it off when removing the wheel. I can ...
nightrider's user avatar
  • 7,749
19 votes
3 answers
13k views

Is it normal for my derailleur cables to cross over on the down tube?

I've just picked myself up a Specialized Allez Sport 2014 road bike from Evans Cycles (UK). I test rode the bike and I'm happy with the bike, but when I got home, and flipped the bike over to make a ...
JoeNyland's user avatar
  • 363
18 votes
1 answer
1k views

How can I tell which road bike components/groupsets are better?

Shimano has new models of their groupsets every year but the lines generally keep the same names. This makes it difficult to figure out what year/version a particular bike has. Is there an easy way to ...
Joe Phillips's user avatar
  • 1,337
17 votes
2 answers
41k views

I'm changing from 8-speed to 10-speed will I need to replace my rear Hub?

I've dug an old road bike out of the garage for the winter and need to upgrade the drive-train, I'm happy about most of what I need but but I'm not sure about the rear hub (an old Shimano Ultegra).. ....
Dog Ears's user avatar
  • 609
15 votes
10 answers
83k views

Shimano Claris vs 105?

I'm planning to get my first road bike as I have been putting a lot of miles into my hybrid. Did a century last Sunday. Altogether I have done around 5k miles on my trek hybrid. So I thought getting a ...
MMG's user avatar
  • 189
15 votes
8 answers
11k views

Why are trigger shifters so widely used, instead of the twisting grip shifters(revoshift)?

I recently rebuilt my whole bike. It was in terrible condition. I also decided to get a new freewheel with more speeds. While i was doing some research and looking through shifters and freewheels, i ...
Stelios Liakopoulos's user avatar
15 votes
3 answers
69k views

How can you identify if a Shimano rear derailleur is medium or long cage?

I have a 2013 Shimano XT rear derailleur. It is part of a 2x10 drivetrain. How can I find out if it is a medium or a long cage one? The picture below shows the derailleur.
user1049697's user avatar
  • 4,218
14 votes
6 answers
8k views

What explains 9 speed cassettes price differences?

I have a pretty heavy bike I use to travel long distances with a lot of luggage. It has a mix of XT, deore and other Shimano equipment. I bought it second hand so I don't really know the details. I ...
Mintar's user avatar
  • 143
14 votes
5 answers
8k views

Why doesn't Shimano use shadow technology on road derailleurs?

Shimano has been using their 'Shadow' technology on their high-end mountain bike rear derailleurs (> Deore) for many years. In addition to the benefit described in the images below (from here), ...
JohnnyO's user avatar
  • 243
14 votes
1 answer
34k views

Which pulley is which on my Shimano STX RC derailleur?

I disassembled my rear derailleur to clean it; when I removed the sprockets they basically looked the same; both jet black and caked with all sorts of black grease-like-stuff. I figured they were the ...
Nick T's user avatar
  • 343
13 votes
2 answers
67k views

Difference between Road/Mountain Hollowtech II Bottom Brackets?

Shimano sells Hollowtech II bottom brackets which are labeled for road and mountain bikes explicitly. I had no trouble fitting a Shimano Deore BB52 Hollowtech II Bottom Bracket into my road bike and ...
Christian Lindig's user avatar
13 votes
1 answer
2k views

What is linkglide/cues and how do they differ from existing standards?

This question is intended to be a canonical question, meant to be referenced when appropriate. In 2021, Shimano launched two LinkGlide Deore and XT Drivetrains (shifter/derailleurs/cassettes, numbers ...
Rеnаud's user avatar
  • 20.4k
12 votes
11 answers
93k views

Shimano Steps ebike E010 and E012 errors: DIY fix possible?

My Shimano Steps-powered e-bike is frequently but irregularly giving me the errors E010 and E012. In the E6000 Series Dealer’s manual and E8000 Series User's manual I found the following: E010: A ...
bjornte's user avatar
  • 267
12 votes
1 answer
4k views

How do I rebuild Shimano XTR hydraulic brake levers?

My right brake lever (Shimano BL-M9020 to be specific) has attracted some dirt around the blade pivot area, and some parts look shiny. I suspect the master piston seals are starting to leak. Replacing ...
MaplePanda's user avatar
  • 15.6k
12 votes
2 answers
22k views

Moving from Shimano 9- to Shimano 10- speed

I'm thinking of changing the 9-speed Tiagra rear mech on one of my (road) bikes to something, still Shimano, but 10-speed. The obvious replacements I'll need are cassette, right-shifter and chain. But ...
PeteH's user avatar
  • 9,733
11 votes
3 answers
40k views

What's the difference between Shimano HG and SRAM XD free hubs?

I know that the Shimano free hub is pretty common. I think it's called HyperGlide (HG). But now I heard that SRAM has a free hub called XD. What is this? What is the difference? When do I need it? Can ...
komape's user avatar
  • 393
11 votes
2 answers
2k views

Is it normal for a new Shimano hub to feel rough?

I have recently purchased a brand new Shimano HB-M7110-B front hub. When I unpacked it and started rotating it with my fingers (as you always must) I noticed that it actually felt quite rough, almost ...
user1049697's user avatar
  • 4,218
11 votes
3 answers
7k views

What kind of maintenance does a shimano dynamo hub need?

I have a shimano dynamo hub on the front of my bike. Does it need any special maintenance, or maybe it needs just a little synthetic grease once a year, like a normal front hub?
Tadeusz A. Kadłubowski's user avatar
11 votes
2 answers
7k views

Shimano 11 speed MTB cassette on an 11 speed road hub, which spacer should I use?

I have a Shimano 11 speed mountain bike cassette and a Shimano 11 speed road hub. Without a spacer there is considerable wobble of the cassette, and I read that a spacer is required. My wheels came ...
sdgfsdh's user avatar
  • 887
11 votes
1 answer
5k views

Is there difference between a Shimano HG200, 11-36, 9 speed VS HG201, 11-36, 9 speed?

Is there difference between a Shimano HG200, 11-36, 9 speed cassette and a HG201 11-36, 9 speed cassette?
mitchtour's user avatar
  • 111
11 votes
1 answer
1k views

Ultegra ST-R8020 Lever: crack near brake hose interface

I have a bike with a left ST-R8020 hydraulic disc Ultegra lever, and I just noticed a large radial crack on a what seems to be part of the brake connection path (see picture). The crack seems to ...
calofr's user avatar
  • 1,059
10 votes
4 answers
5k views

Can a counterfeit Shimano chain be used on an authentic Shimano drivetrain?

I unwittingly purchased a fake CNHG901 HG-X11 chain for my Shimano 2x11 M700 groupset because my original chain already had 0.75 wear. I was naïve to think that I'd actually get a legitimate chain ...
SEBASZCHAN's user avatar
10 votes
4 answers
5k views

Will an Shimano M8000 brake lever blade fit a M8100?

Will an Shimano M8000 brake lever blade fit a M8100? I broke my left blade, it's a Shimano XT M8100. I can only seem to find the replacement M8000 part. I don't want to replace the whole unit, seems ...
Jonathan S. Fisher's user avatar
10 votes
2 answers
17k views

What exactly is Shimano's Shadow Plus technology for rear derailleurs?

A couple of years ago, Shimano debuted their Shadow Plus technology for mountain bike rear derailleurs. What is it and why would you want it? If it's such a good idea, why hasn't it been copied by ...
RoboKaren's user avatar
  • 29.2k
10 votes
4 answers
8k views

Trouble getting the right cup and cone hub adjustment

I have a pair of Shimano XT wheels and recently had issues with the hub on the rear wheel requiring new cones and bearings. These were fitted carefully but I've had issues getting the right adjustment ...
Badger's user avatar
  • 203
10 votes
3 answers
557 views

My derailleur completely "opened" up. It is now almost a straight line. What have i done to my derailleur?

I had a flat on the side of the road. So I took my wheel off to replace the tire with a temp to get me home. When I reinstalled the wheel, the derailleur "opened up" completely...what have ...
Josephus's user avatar
  • 101
10 votes
1 answer
3k views

Shimano RS785 hydraulic disc brake caliper will not reset

Brand new RS685 lever and RS785 calipers. I installed the front with no trouble. Shortened line, bled, ready to go. The rear, however, was a problem. I shortened and bled the line same as the ...
Jeff's user avatar
  • 188
9 votes
3 answers
33k views

Can I replace chainrings without replacing the rest of the drive train?

I now ride a 60cm SurlyLHT with chain rings at 26/36/48t. Can I replace with a smaller set at 22/32/46t (or similar combination) without having to replace the entire drive train - cassette, rear ...
SurlyLHT60's user avatar
9 votes
3 answers
3k views

Get a tougher gear on Shimano GRX, 11-34T, 2x11

I have a new 2021 Cube Nuroad Race gravel bike with Shimano GRX, 11-34T, 2x11. I am used to riding a road bike, and find on the new one I don't need the easiest gears on the hills, but could use a ...
user67257's user avatar
  • 190
9 votes
3 answers
12k views

Can a Shimano XT (mountain) hydraulic disc brake caliper be used with an Ultegra STI road brake lever?

Specifically, is the XT BR-M8020 mountain caliper compatible with an Ultegra hydraulic road brifter like like the ST-R8020 or ST-R8070? I have confirmed that they both use BH90 brake hose ("high ...
John McD's user avatar
  • 175
9 votes
3 answers
10k views

How do I clean the inside of a freehub?

I didn't know any better and I let degreaser drip into the freewheel body of my Shimano FH-RM65. Now it makes a terrible retching noise when it rotates. How do I clean the inside of this thing? I'm ...
ændrük's user avatar
  • 193
9 votes
2 answers
3k views

Bicycle disc brake rotors

It is time to change my bike's hydraulic disc brakes . Now I have a Hayes Stroker Ryde system , but I want to order a Shimano M395 instead . The question is that I don't know If I have to order the ...
Abrahamyan Samvel's user avatar
9 votes
5 answers
132k views

50/34 vs 52/36 crankset for 11-32 cassette (shimano 105 5800FC)

Following up on this enlightening answer, I would like to know the differences between 50/34(compact), 52/36(mid-compact) and 53/39 (standard). The cassette I am choosing is 11-32 to give me a wider ...
Sukhi's user avatar
  • 193
9 votes
2 answers
27k views

What are the differences between the Alfine 8 and the Nexus 8?

I'm shopping for a new bike and I have a choice between one with the Alfine 8 and the other with the Nexus 8. They seem to be pretty similar, but from what I could gather from forums here and there, ...
kokito's user avatar
  • 215
9 votes
1 answer
11k views

Disc brake lost power

Firstly I'd like to mention that I don't think this issue is related to contamination (at least from sprays etc) and I'm aware of the following 2 threads: Disc brake stop working after wash, How do ...
Chris's user avatar
  • 809
9 votes
3 answers
15k views

Combining Shimano RS500 crankset with Stages Shimano 105 5800

I've been thinking about getting a power meter for a while now. I finally decided I would get one, but now I realise that Stages only starts at the Shimano 105 level. I currently have a Shimano RS500 ...
Wout De Rooms's user avatar
9 votes
3 answers
4k views

difficulty in shifting to lower gear on shimano (6 speed rear gear)

I am new to using a bicycle with multiple speeds. I got this new bicycle 4 days back with Shimano 6 speed rear gears. I don't know much else about the components. There is no issue when I move to ...
Amit's user avatar
  • 191
9 votes
1 answer
824 views

Shimano Dura-Ace R9120 lever leaking

My bike's Dura-Ace R9120 rear-brake/front derailleur shifter (left shifter in UK) leaks brake fluid when I pull hard on the lever. It leaks from this specific place: I understand this lever is ...
Paul Suart's user avatar
8 votes
2 answers
2k views

Will a 7-speed chain work on a 2x10 speed drivetrain?

Need a new chain for a bike I'm repairing, bike is a 2x10 speed road bike, and I have a spare KMC Z7 7-speed chain. According to KMC, Z7 size is 1/2" x 3/32" The old 10-speed chain is a KMC ...
Edgardo Barría Melián's user avatar
8 votes
6 answers
5k views

Bleed port repair on Shimano road brake lever?

I noticed that a small amount of mineral oil had leaked from the bleed port on my Shimano road brake lever. I inspected the bleed port screw and saw that it was loose. The threads on the lever ...
sdgfsdh's user avatar
  • 887
8 votes
2 answers
2k views

What does this screw do (on my bicycle)?

I was trying to adjust the "H" and "L" screws on my rear derailleur to as to adjust the gears better to a Wahoo Kickr I just set up. However I accidentally gave a turn to another, ...
Cerulean's user avatar
  • 1,061
8 votes
2 answers
2k views

Improving front derailleur shifting

I've set my girlfriend's bike up with 9-speed Shimano MTB shifters and road derailleurs. Specifically, the shifters are Deore SL-M590 (3 x 9 speed), the front derailleur is Tiagra FD-4600 (2 speed) ...
camarones95's user avatar
8 votes
5 answers
40k views

How to repair sticky Ultegra shifter

I have Ultegra 3x9 shifters and derailleurs that were installed just a couple months ago. I purchased them on eBay and although they were new, they had been sitting in inventory for a couple years so ...
Carey Gregory's user avatar
8 votes
3 answers
19k views

Crank Arm Compatibility - Shimano Ultegra 6800 and R8000

Does anyone know if an Ultegra 6800 left crank arm will work on an Ultegra R8000 crank? I'm looking at upgrading my road bike, and I'd like to move my current crank-arm power meter over to the new ...
KevinC's user avatar
  • 611
8 votes
1 answer
3k views

Derailleur can't shift to 51-T sprocket. Deore CS-M5100 + RD-M5100

ISSUE: When attempting to shift to the largest cassette sprocket, the side of the derailleur cage contacts the 51t sprocket, so the chain is not able to go up the gear. WHAT I DID: My drivetrain was ...
Ludo's user avatar
  • 181
8 votes
4 answers
38k views

Can you use a 8 speed Shimano shifter with a 7 speed cassette?

I want to use an 8-speed shifter with a 7-speed cassette. I saw this question, but I am unsure if this would work, since I believe the spacing is the same between a 7- and 8-speed, but the length is ...
Carson Reinke's user avatar
8 votes
2 answers
2k views

What is the heritage behind Shimano groupset names?

Shimano’s groupsets have some fairly unique names. Here are the names, arranged in each hierarchy from lowest to highest cost: Mountain: Tourney Altus Acera Alivio Deore SLX Deore XT XTR Road: ...
MaplePanda's user avatar
  • 15.6k
8 votes
3 answers
3k views

What does marking like "aq/ar" on the sprocket mean?

Shimano sprockets are marked with short strings like "aq/ar", "bg", "as/au/be" and others. For example, "bj bk" can be read on the image below: It looks like they mean the hyperglide series to which ...
Konstantin Shemyak's user avatar

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