Zoom H876E 2-PIN/3-PIN 4-Pistons E-Bike Electric Power-Off Hydraulic Brake Set with 180mm Rotors, Pre-Bled Hydraulic Disc Brake Caliper Lever for eBike (Included Mounting Adapter)

Bought 2 of these for my 2 ebikes. Has these for 2 years. Great stopping power

Own a Cyrusher XF 800 Ebike with 4500 miles on it. The existing brakes started to get air in them frequently and I had to bleed system more than I would like to. Had more than a few brake pad changes and they performed just ok after install.The original brakes were made by Zoom and are single piston calipers. I decided to upgrade to dual piston calipers for better brake performance. These are also made by Zoom and purchased two pin in color Red. Must admit they look sharp on the bike.Install was fairly easy. Just remember to add the little hose barbs with conical Brass ends inside the hose. As others before me have stated use a screw in motion to seat the hose barb all the way down inside tube.I wish they would give three of the brass hose collars and not two as inevitably one gets ruined or lost in the process. To be clear if you cut the hose for a custom fit you need to use tubing cutters and not scissors or Dykes. A tubing cutter will leave a nice clean cut so the collar will fit over easy.In my case no bleeding was necessary and there is little brake lever travel before brakes are on solid. On this particular bike they chose to mess up the orientation of the left right lever . It should be right lever equals right rear so that's what I changed it to.Pistons appear to be small in comparison with the other big name brake companies like Shimano and Magura but at this price point you do get what you pay for.its too cold in the Northeast now ( Feb 2024) to test much but a brief run revealed better stopping power even before brake in of pads. I will upgrade review as i get miles on the bike.Right now I think its worth buying and upgrading your brakes using this kit.Update -Cool Meng sent me some Olive rings and hose barbs.

Good

Let me start off by saying I'm not a small guy. I'm 240lbs, and on top of thar, my Ebike with everything loaded is around 80lbs. That's 320+ lbs to stop which my mechanical brakes were having a rough time doing safely and quickly. I picked these up after watching many videos on how hydraulic brakes are far superior in terms of stopping power, being able to feather the brake more consistent, and longevity. I can 100% say for certain that I'm extremely happy I picked these up. It's night and day difference on stopping power versus the finger power needed ratio.Before, with mechanical brakes I had to pull awfully hard to come to a quick stop, and my brakes were screaming at me and the heat put off was insane, I actually burned my fingers touching the caliper after riding one time, I learned to not do that again haha.When I installed these, one hose was leaking at the fitting on the brake handle, I contacted Amazon and they sent me out a replacement for it, so that was A+ as always from Amazon customer service!!These 4 piston brakes paired with Bucklos ceramic brake pads are an absolute necessity for me now! I do recommend getting a brake bleeding kit (search around you can find a kit with a few bottles of mineral oil for around $15) because even though they are pre bled, you don't know if the right amount is in it, when I installed my brakes and got everything on the bike I noticed that my read brake was squishy and didn't have the proper pressure, so I bled them, and got more pressure than the front had, so I bled both. Very simple process, easy for anyone to do. But now that I had proper pressure, I now feel very confident in stopping, and feathering the brake on a long downhill, or abrubt emergency stopping. It stops so much better with how much weight it's counteracting. All in all, I couldn't be happier with my iZoom brakes! I will never own mechanical brakes again!

Easy installation if you watch the video. They work great. I have much more confidence that I will be able to stop in an emergency.