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Questions tagged [brake-levers]

Hand control for actuating your bike's brakes.

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4 votes
1 answer
1k views

Brake Line no Longer Connected to Brake Lever

Randomly a couple of days ago, my left brake stopped working. When I investigated, the bolt or nut or whatever that had held the brakeline inside the brake lever was missing! Image showing brake ...
1 vote
1 answer
63 views

MicroShift R9 derailleurs with Shimano Sora levers

I have been running a MicroShift R9 2x9 groupset (+ Shimano mechanical disc brakes, BR-M375 I believe) on my gravel bike, which is what it came with when I bought it. Now, I am fairly happy with it, ...
6 votes
0 answers
444 views

Shimano road bike lever leaking mineral oil

I have a leak in my Shimano DA 9170 (right) shifter. When I do a bleed, everything seems to work for a ride or two and then I start to lose braking power and the underside of the brake hood is wet ...
0 votes
0 answers
41 views

Hydraulic road levers bleeding not working

a long time reader here that was usually able to find an answer, but not on this one. I've done some basic and slightly more advanced fixes and part replacements on bicycles, but I've never installed ...
9 votes
1 answer
909 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 ...
4 votes
1 answer
336 views

How are brake cables installs for drop and flat lever combo brake system?

I have an old traitor wander which is a discontinued series. The brake system is curious but interesting. I'd like to reroute brake cables and levers but I don't want to open a can of worms. Is there ...
3 votes
0 answers
50 views

Microshift AdventX drop bar lever spring position

My left brake lever spring was not pulling the lever back and I checked and it was bent. I removed the lever and fixed the spring, but I don't know how to put it back. I can't find any tutorials nor ...
1 vote
1 answer
83 views

Front hydraulic brake lever dislodged

This is a brand new mountain bike for kids with hydraulic brakes. The bike fell on its side and when we picked it up, the brake handle got caught by a branch. With a little effort, we were able to ...
7 votes
3 answers
9k views

Hydraulic brake lever doesn't return after being released, dependent on weather

I have a pair of second-hand Shimano ST-RS685 hydraulic brake levers / shifters. Unbeknownst to me they hadn't been used for a year and had quite a bit of dirt / grit inside, which I've cleaned to a ...
4 votes
3 answers
732 views

Replacing hydraulic brake lever

This is my first time dealing with hydraulic brakes. The front brake on my bike is Shimano BL-M4100 lever with MT410 caliper. I stripped the lever's clamp thread and going to replace the lever with a ...
1 vote
1 answer
1k views

Use Shimano 105 R7000 shifters for Disc brakes

I have 2 spare R7000 shifters which I used on my rim brake equipped road bike. I've upgraded to Ultegra some time ago. I also have a Tiagra gravel bike with mechanical disc brakes that uses Tiagra ...
2 votes
1 answer
463 views

What tool do I need to adjust the brake cable here?

I need to loosen very tight bicycle brakes(pads). This is the only thing running over the cable, have no idea what it is and don't have many tools to begin with so assuming I don't have what is needed ...
2 votes
1 answer
167 views

Shigura - Can i use a Shimano XT Lever on A Magura HS33 Hydraulic Rim Brakes

Good day to Everyone, My Magura HS33 Lever on my ZHI Z3R trials bike broke, and i was wondering if i could replace it with a Shimano Deore XT BL-M775, as i have it stocked on my parts bin. And if i ...
0 votes
1 answer
102 views

Brake lever suddenly stuck due to an overtightened screw - what went wrong?

The issue I was biking when suddenly it felt like I was driving in the sand and not on a regular road. Upon inspection, I noticed that the brake was stuck on the 'closed' position, closing the disc ...
1 vote
2 answers
695 views

Are cross brake levers with compact drop bar redundant?

I currently have traditional drop bars and cross (interrupter) brake levers. I like the interrupters and use them a lot. But I'm going to get a compact drop bar (FSA Omega Compact bar on order), and ...
11 votes
2 answers
28k views

What is the actual cable pull of brake levers?

I understand that there are 2 brake lever cable pull standards: Standard Pull Levers Long Pull Levers (for V-brakes and disc brakes) But what is the actual difference in pull? And specifically: what ...
5 votes
5 answers
972 views

LBS won't Service Shimano Dual Control Lever

I have a bike with Shimano 105 dual-brake/control levers. But the right one stopped shifting, so I took it to my LBS to have it serviced. I asked them to take it apart and clean/grease the mechanism. ...
1 vote
1 answer
105 views

Can i replace just the brake on a bike that has a combined shifter/brake lever unit

i’ve just bought a new bike with shifter and brake units together on the handlebars. i want to replace the brakes with hydraulics from my last bike (new bike has cable brakes), however i don’t know if ...
3 votes
1 answer
53 views

Dia-Compe Gran Compe shot lever - is there a fix for 31.8mm bars?

I have a Dia-Compe Gran Compe shot lever and want to change the bars on my track bike for 31.8 diameter bars — is there a fix (i.e. replacement clamp band) that anyone can point me to that I can use ...
8 votes
6 answers
10k views

What and where is the weeping port on Shimano MTB brake levers?

I understand that when you overfill some models of Shimano hydraulic brakes with oil, the excess will flow out of a one-way valve called weeping port, but cannot find any technical documents, pictures ...
3 votes
3 answers
773 views

How do barrel adjusters for v-brakes work?

I have been thinking about barrel adjusters and I don't see how they can be truly effective although they appear to work, except on this particular bike where they don't seem to do anything. Is there ...
3 votes
2 answers
2k views

Why is my brake lever loose on my hydraulic disc brake i took my wheel off and pressed the brake now the brake lever is loose and touches the grips

What i did in order : cleaned the brake pads -put them back in pressed the brake lever pushed the brake pads inwards put the front wheel on Now as a result of this the brake lever is loose
1 vote
0 answers
169 views

additional brake lever as bullhorn lever

I want to change the handlebar on my folding bike, to get a less upright position. My idea is to pu a bullhorn-like bar, but I need both cable brake, and right shifter. Thus, I have either to use a ...
2 votes
2 answers
893 views

Shimano 105 - Shifter Internal Lever Broken

I've managed to snap an internal lever (it looks similar to the one on the right side in the pic) in my Shimano 105 (11-speed) right shift - think I just pushed it too far over and it snapped. I can't ...
3 votes
2 answers
422 views

Help identifying and sourcing a part for Shimano brake lever

A few weeks back, when trying to refit the v-brakes on my son's MTB after taking the wheel off, I shattered a threaded plastic washer on his Shimano brake & gear lever (ST EF500). I call it a ...
1 vote
0 answers
351 views

Cross (also called in-line or sub) brake levers compatible with SRAM Apex

Does somebody know of cross/in-line/sub brake levers compatible with SRAM Apex? Could the Shimano GRX sub brake levers perhaps work? See https://bike.shimano.com/en-EU/product/component/grx-11-speed/...
1 vote
2 answers
454 views

Campagnolo 2x11 Record with GRX derailleurs

I really don't like the Shimano 105 levers on my bike. I would like to switch them in favour of Campagnolo 2x11 Record, and would like to know if anyone tried to fit them with GRX system: Front ...
-1 votes
1 answer
96 views

Mechanical bike disc brake caliper lever

Where can I find a data sheet for this part? I want to know if there is a magnification factor between the force which acts on the disc brake by pads, and the force that I pull the wire with, as I ...
4 votes
1 answer
731 views

Stripped reach adjustment screw on GRX RX 815 levers

In trying to decrease the brake lever reach on my GRX Di2 shifters, I seem to have stripped the 2mm hex screws. They are located in an awkward position on the top of the shifters: https://si.shimano....
4 votes
2 answers
152 views

Identifying missing small part Campagnolo brake lever

I'm missing a small part that guides the brake cable in my Campagnolo brake lever. Any idea how to find one of these? Update: This is what the part looks like (taken from the other lever)
6 votes
1 answer
3k views

How to interpret Shimano compatibility chart?

How does one interpret the delineation of horizontally-aligned boxes on the Shimano compatibility charts? Below is a screenshot (with added blue numbering) for discussion purposes. For example, why ...
2 votes
1 answer
97 views

Is it possible to use brake levers with large-diameter fittings on a smaller-diameter handlebar?

I bought brake levers meant for 31.8mm handlebars (namely Tektro RL721, meant for cyclocross) some weeks ago, meaning to use them for a bike build which has a 20-something millimeter bullhorn ...
3 votes
3 answers
2k views

Where/how do I reduce travel on my brake levers?

How do I reduce travel my brake lever? (To brake currently, I practically have to depress it all the way to the handle bar.) I don't see any place to put an allen wrench anywhere. What am I missing?
4 votes
4 answers
8k views

Hydraulic disc brake - lever compatibility

I purchased a gravel bike with drop handlebars, mostly for commuting and maybe for some weekend bike camping trips. I've only ever ridden mountain bikes with flat bars in the past, but I figured I'd ...
2 votes
0 answers
281 views

after multiple brake bleed, lever's max stiffness is still close to bar

so after a few bleeds i've done on these Shimano saints, because of new levers replacement, i've found that the rear brake lever, although on max stiffness, goes way further to the bar then the other ...
-1 votes
1 answer
109 views

Performance of 'safety levers' [duplicate]

How do safety levers work exactly? When installed properly, what is their braking performance? What about when installed improperly? What faults do they have? How ergonomic are they? How good of a fit ...
3 votes
2 answers
749 views

Would you be able to use mountain bike/straight bar cable brake levers as auxiliary/inline brake levers on drop bars?

Really dumb question, but would this be possible, with or without practicality? Drill a hole in them, perhaps?
3 votes
1 answer
832 views

Best integrated road shifter/brake levers for people with small hands?

I’ve seen this subject raised a lot on various forums but with no definitive answer. Lots of opinions but no hard data. My questions are: Is there a measure of lever suitability for small hands? (...
3 votes
2 answers
2k views

Can I replace my rear cantilever brake with a caliper brake?

Can I replace my damaged rear cantilever brake with a caliper brake? I assume there are two things to consider: frame and lever. Frame The frame has a black, hook-shaped part, which I believe Sheldon ...
1 vote
1 answer
270 views

long-pull bar-end brake lever for bullhorn bar

I'm thinking of trying out a bullhorn bar but don't want to spend a lot of money on the experiment. My brakes require a long-pull lever. Is there such a thing as a long-pull bar-end brake lever? The ...
6 votes
2 answers
3k views

Shimano 105 ST-5500 gear sensor mechanism

I have a pair of Shimano 105 levers and would like to know what sort of mechanism is inside the shifter to track what gear it's on? Is it a potentiometer? Or maybe small switches? Also, does anyone ...
3 votes
3 answers
6k views

How to tighten SRAM HRD Rival brake lever?

I have SRAM Rival HRD brake/gear shifters on my cross bike. It's a 1X setup. The left brake lever (this is the UK where rear brake lever is on the left, so it's the rear brake lever only) has lateral ...
3 votes
1 answer
4k views

Repair Tektro HD-M275 brake lever

My girlfriend's son recently acquired a pre-owned Scott Aspect 760 for Christmas (2021 model) - essentially brand-new and ridden once or twice, if at all. We noticed the other day that something ...
2 votes
2 answers
3k views

Is losing power when pulling Shimano GRX lever a bleed problem?

Recently I had an accident on my bike, and my front brake 11-speed, front brake GRX 600 shifter isn’t braking well anymore. The shifter took a bit of damage in the fall. Initially it didn’t shift, ...
1 vote
0 answers
108 views

when bike kept inside, brake/ lever goes extremely stiff

so, I've been through a lot of fiddling with my brake levers, giving them a small clean out and bleed, but I've noticed now that when i keep my bike inside (on heated floor) the brake levers go stiff, ...
2 votes
1 answer
1k views

Why do my side pull caliper brakes work better with linear pull levers

I have an older Windsor bike that came with some long arm side pull caliper brakes. I was using it with a pair of avid fr-5 brake levers that are stated on the specs as "Compatible - All levers ...
3 votes
2 answers
577 views

How to install dual shifter/lever on handlebar when clamp is too tight

I’ve got a Shimano GRX Di2 dual shifter/lever that I want to install on a new Carbon handlebar (Carbonda CGB01) . The problem is that it fits until it reaches the curvature and then it gets stuck. I ...
6 votes
1 answer
1k views

Clips/extenders for road bike brake levers?

While on the hoods, I'd like to have a bit more surface area, or leverage, for engaging the brakes. I saw somewhere that there are clips or extenders that attach to the standard lever, providing a ...
2 votes
2 answers
2k views

failed brake bleed, lever is blocked up

My brakes are Shimano Saint. I tried bleeding my brake to identify a problem and no fluid went through. I took the brake lever off separately and pushed water through it, still blocked so I gathered ...
1 vote
2 answers
1k views

Bleeding brake lever impossible (sucks air)

I did the bleeding procedure for my Avid Elixir CR (hydraulic disc brakes), following the Avid service manual. While performing the last step, bleeding the lever, it seems that air was sucked in from ...