SKU: 72381550334
hydraulic disc brakes gravel bike

hydraulic disc brakes gravel bike ZTTO Gravel Road Bike Hydraulic Disc Brake Flat Mount CX Rotor Brake C

Sale price$19.62 Regular price$21.80
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Description

hydraulic disc brakes gravel bike ZTTO Gravel Road Bike Hydraulic Disc Brake Flat Mount CX Rotor Brake CZTTO Gravel Bike Road bike Hydraulic Flat mount Disc Brake weight : 270g (front and rear brake) 169g(disc) CNC made Upgrade! New version In response to the shortcomings of the first version, we have made improvements. Now the piston is more sensitive, the oil circuit design is more balanced, and we have also reduced the price by reduce unnecessary design. The new version uses metal pads and normal disc as standard setting . if you still want floating

ZTTO Gravel Bike/ Road bike Hydraulic Flat mount Disc Brake

weight : 270g (front and rear brake)/ 169g(disc)
CNC made

Upgrade! New version

In response to the shortcomings of the first version, we have made improvements. Now the piston is more sensitive, the oil circuit design is more balanced, and we have also reduced the price by reduce unnecessary design.

The new version uses metal pads and normal disc as standard setting . if you still want floating rotor please jump to new version link to check.

140 and 160 compatible

In the new version, we have redesigned the appearance so that it can be compatible with 140 and 160 at the same time by the same adapter

what's the different between old and new ?

The new version is an improved version of the old, which mainly optimizes the piston and oil circuit design. Changed to metal pads, no heat sink, because it is not needed, the metal pads have strong resistance to heat, and the disc is changed to a more cost-effective style , Of course if you need luxury configuration, please check another link of ztto official store. the new version use DB1 brake pads, the old one use m8000 pads.

Flat mount for Road bike

Do not buy it wrong, it's different from MTB brake ! please check the size first.

Flat mount for Road bike

Do not buy it wrong, it's different from MTB brake ! please check the size first.

Sometimes we receive some questions like this : Is it hydraulic or mechanical?

Both. The brake is filled with mineral oil. brake wire pulls the main piston, and the main piston hydraulically drives the two sub-pistons.

Don't worry about the piston

Yes, we have noticed that some buyer say that only one side of the piston will move. I think we need to explain something. (unexpectedly that so many road bikers use hydraulic disc brakes for the first time), this is very common for hydraulic disc brakes, No matter it is an MTB or a road bike brake, no matter how advanced or expensive your brakes are, all hydraulic brake systems and even vehicle brake systems will have such things happen, but at the same time it is very easy to solve.
In general, you just need to hold the moving side, which will make the lazy side move, and then give the piston a little lubrication. Repeat a few times. It only takes one minute to solve this problem.
A famous blue tool brand has a video to teach you how to solve it, but we can't write a link here due to copyright reasons. You can search by yourself or contact us to get the video link. So don't worry, these brake working good .

Flat mount compatible

Fit for most of road/ gravel bike ,
Front 70mm mount / Rear 34mm mount

Original Cooling pads

It's ready for a long downhill. After upgrading to disc brakes, no matter how you use the brakes, you don’t need to worry about rim damage.

Light weight brake system

270g (front and rear brake)/ 169g(Rotor)
the whole brake system only about 20g heavier than the common C caliper, but in exchange for stronger braking force and no need to worry about the brakes overheating

Original Floating Rotor

Good brakes also need good rotors, this rotors combination of hardened aluminum alloy and high-strength steel. Not only looks good, but also achieves excellent performance such as light weight, high strength, and good heat dissipation.

Easy to find replacement parts

Using common pads ,same as M8000

Black / Red Available

Sometimes we receive some questions like this : Is it hydraulic or mechanical?

Both. The brake is filled with mineral oil. brake wire pulls the main piston, and the main piston hydraulically drives the two sub-pistons.

Don't worry about the piston

Yes, we have noticed that some buyer say that only one side of the piston will move. I think we need to explain something. (unexpectedly that so many road bikers use hydraulic disc brakes for the first time), this is very common for hydraulic disc brakes, No matter it is an MTB or a road bike brake, no matter how advanced or expensive your brakes are, all hydraulic brake systems and even vehicle brake systems will have such things happen, but at the same time it is very easy to solve.
In general, you just need to hold the moving side, which will make the lazy side move, and then give the piston a little lubrication. Repeat a few times. It only takes one minute to solve this problem.
A famous blue tool brand has a video to teach you how to solve it, but we can't write a link here due to copyright reasons. You can search by yourself or contact us to get the video link. So don't worry, these brake working good .

The new version uses metal pads and normal disc as standard setting . if you still want floating rotor please jump to new version link to check.


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Exchange/Return Notes
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SKU: 72381550334

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m-chan
Alexandria, US
★★★★★ 5
The 4K's Rating
I'm not sure what's going on with this release, as it gets praised by some, condemned by others. Very strange. For me, all the criticism of the colors in some scenes (like the teal & orange bedroom scene) makes no sense, because those colors do not appear as saturated and forceful on my Panasonic 4K player and Samsung 42" 4K TV. They look noticable, as teal and orange naturally clash at any strength. But they don't look entirely unnatural. As for the grain, it iS awful during the initial party scene, to the point of distraction. But as the movie progresses, it seems to weaken. I'm not sure at what exact point the distraction ends, only that I became fully absorbed in the movie before Bill's nocturnal "adventures." (As a matter of note, I don't oversharpen in the settings, and don't bump up saturation.) This rating is for the 4K. I've only watched about 20 minutes of the blu-ray, during which I encountered a 3-4 second sound dropout that was troublesome. As in SILENCE. It's something I intend to contact Criterion about, to see if this is an anomaly (in which case I'll initiated a replacement from Amazon). If it's a general problem, I'll ask Criterion for a blu-ray replacement. I want to watch more of the blu-ray before taking any action, in case there are more dropouts to report. BTW, the blu-ray looks quite good to me, altho I think the 4K is slightly more detailed.
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Reviewed in the United States on January 11, 2026
K
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Kindle Customer
Houston, US
★★★★★ 5
VERY COOL
Wow HOT
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Reviewed in the United States on May 13, 2026
J
Verified Purchase
JustAnOpinion
New York, US
★★★★★ 5
One of my all-time favorites looking better than ever!
Firstly, the bad (see pictures). I'm not knocking off any stars, because there's nothing wrong with the movie/4K transfer. If you see the 4K variant listed for cheap, be aware you may need to buy a new case, which for a single is roughly $8-$9 per, and $22 if you buy a pack. I had a case, and just moved the slip cover over. Not ideal, but... If I didn't have a spare case I would've had it replaced. For a movie that's special to me as this one is I'd prefer to have the OEM case. Something just feels less authentic knowing I had to transfer a movie (one of my all-time favorites) that recently got a 4K transfer, into another case. Just be aware of this if you see it pop up for sale on Amazon for a low price. It's possible it could have something to do with shipping, but this was shipped from Amazon. I just don't "think" it would be crushed so bad to break the plastic housing into pieces on the top, bottom, and bottom of the spine from shipping. The seller may not have shipped it in this condition, but I assume they did, or I wouldn't imagine it would've been listed as cheap as I got it for. I'm not knocking the seller or Amazon. It was a great deal overall, but maybe not so much so if I hadn't had a spare case. The improvements to the 4K variant are very good. The contrast and black levels are drastically improved over the HD Blu-ray. Colors are better, and the overall transfer just looks great. It's a genuine 35mm transfer, and with the resolution boost I can see things in this movie now that I don't ever recall being able to see before. I may be redundant here, but truly, the black levels of the suits are excellent. No more gray looking suits. The overall contrast of the film is greatly enhanced. Film grain: I think this is important to mention, because it won't be long before 120+ inch TVs are more widely available, and affordable. I'm viewing this on a 120" screen projected from a Sony laser projector, and I'm not saying that as a humble brag. I'm simply saying I realize most will be viewing this on smaller screens at the time of writing this review, and the film grain will be less evident for the average viewer. Even at 120" it looks good. Too many details may have been scrubbed away if they tried to remove all of the film grain, and it would lose that 35mm look. Now, Jurassic Park 4K? I have to watch it on a smaller screen to be bearable, because the film grain in Jurassic Park 4K is intolerably bad for my liking. For anyone who owns and enjoys older films that are really special to you, never get rid of your smaller screen if you do eventually move up to 100+ inches, because even as horrible as the film grain is on Jurassic Park 4K at 120", it looks like it was shot yesterday when I watch it on a 65". I imagine Dark City 4K would look amazing on anything below 100" (unless you sit really close to the screen), but again, it still looks really good to me at 120". This film is one of my childhood and all-time favorites. I won't write a review explaining the movie itself, because I imagine most people who are reading this have already seen and love this film, and are only looking to see what the improvements are for the 4K transfer. Search YouTube "Dark City 4K Vs HD" for really good side-by-side comparisons so you can see just how much they put into this. I think the channel name is "Twin Flicks" that I watched the comparison on before purchasing this/Dark City in 4K. I highly recommend the 4K variant of Dark City from Arrow. I'm not really qualified to say, but I think they did a great job with this transfer.
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Reviewed in the United States on January 23, 2026
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Chris L.
Lowell, US
★★★★★ 5
Cult classic for a good reason
This movie has attracted a enthusiastic following over the years. It has a great story, deeply developed characters, and clever plotting. The 4K disc picture quality is excellent, as is the sound. It's a movie I watch regularly over the years, which is the test that counts—repeat viewings (there is always some new detail to discover, and others to appreciate).
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Reviewed in the United States on April 19, 2026
M
Verified Purchase
Matt Stevens
Alexandria, US
★★★★★ 5
An Archival quality 4k
The Director's Cut is marvelous and this new 4K release is sensational. The image quality is remarkable and yes, noticeably superior to the Blu-Ray release. The audio is also worth mentioning here, so do not think you will be in any way disappointed. While the price is a bit step, I just waited for a good sale and nabbed it at 50% off.
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Reviewed in the United States on February 20, 2026

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