BUCKLOS Zoom Road Bike Line Pulling Hydraulic Disc Brakes Calipers Front + Rear, Aluminum Alloy Hydraulic Bike Brake Caliper with Adapter/Bolts(Red)…

These were easy enough to install, and the front fits great with my existing 160mm rotor. However, the spacing on the back brake requires a 180mm rotor. Disappointed that I need to buy another part now to make these work.

First, these come with pads pre-installed if anyone is wondering (as I was). Second, the included bolts were not the right lengths for my bike so I had to use the originals. Third - there is ZERO documentation included.I bought a used State Bikes All Road Black Label (kind of a gravel bike). Considering the cost of that bike I was shocked they used some really sketchy and poor stopping power mechanical calipers which scared me - even after new pads, cleaning rotors, careful adjustment, bedding in.Another bike I have has TRP HY/RD calipers on it, so I knew mechanically actuated hydraulic calipers could do much better, but I didn't want to spend $250 (plus) on new calipers for this used bike.So, after seeing a few positive reviews of these (elsewhere) I thought I would take a chance knowing the return policy at Amazon gave me some protection.I am happy to say, these outperform the mechanical calipers by two to one - maybe more. I can stop easily from the hoods and am no longer afraid to ride the bike. Of course, these are not as good as the TRP HY/RD's. Frankly though one of these units is not that much more than a set of "official" TRP HY/RD pads!So, if I were rating these on value - it would be 5 stars. But versus the actual performance of higher end units it would be more like 3.5 - so I'm splitting the difference and giving them 4. I have only had them on the bike a short time, so can't speak to durability. So far my opinion is that I would buy them again.

Easy to upgrade stopping power to a mechanical disc bike

I figured these were worth a shot to upgrade my mechanical brakes. I mounted up the front and found the posts are too long, making the caliper sit a few millimeters farther from the frame. This causes the pads to have significantly less contact with the rotor.

I wasn’t expecting a world class brake for $60. More of an expirinent to see how they worked before spending $300. Had to cut and file a section of the offset baseplate off to clear the rotor bolts for the front. Small potatoes. What was kinda hard to over look was the base of the rear brake where it bolts to the frame did not sit flat on the frame. I had to use a big mill file to shave the posts down nice and even. Being a fabricator and bike mechanic forever, I was confident in my experience to do this and it paid off. They worked awesome for a few weeks of neighborhood riding with the kids before they started squeaking loudly at each lever pull, each time the piston is compressed. The pads they come with aren’t very good as expected. I’ll be upgrading… either to different brakes or new pads. Or just selling this bikes because disc brakes are over rated haha my canti brake bike stops waaaay better and smoother.

The huge standoffs compared to my stock road mechanical disc brakes allows for the rear to fit without an adapter but the front is offset too much to be useful. It works perfectly when upgraded to 180mm front disc rotor.As far as stopping power it did feel better than the dual piston mechanical brakes I had previously but that could be because of the bigger front rotor (180mm vs 160mm) and newer pads. The difference in stopping power wasn't amazing though.

Work as expected. Installation was easy. Not as smooth as true hydraulic brakes but good

Delivery time was good.I have a road bike with mechanical brakes on which are pretty average.The Zoom brake unit bolted straight on with no problems but the first ride revealed very blunt braking effects so after some riding with the brakes on to bed them in they became very strong. Very pleased with the brakes for nowand good value for money.