Juin Tech F1 Cable Actuated Hydraulic Bicycle Bike Disc Brake Caliper Set Extra Lightweight Hybrid Brake Set for Flat-Mount Road/Cyclocross/Gravel/E-Bike/Folding Bike use w/160mm 6" rotors

Solid upgrade for my Poseidon X Ambition. You need a 180mm rotor for the front wheel, which is fine because that increases braking force even more. I paired them with Jagwire cables and the bike brakes (nearly) as well as my wife’s Trek that has full hydraulic brakes.

Replaced promax on cannondale topstone. Didn't need 180mm rotors, too big for my config. Very easy to adjust, installed the new 160 rotors that come with the kit. Look great and very smooth, great stopping power even before fully bed in. Highly recommend

I ordered these for my Cannondale Topstone 4 because the stock cable brakes are pretty bad. I installed the Juin Tech F1 calipers, and right away the rears only fit well on the frame without the included bracket. So I bolted those on and that was just fine. The fronts however, the included bracket makes the calipers too far offset for a 160mm, and the bolt patter on the forks require the bracket. So I had to go get a 180mm rotor for the front in order for the pads to make solid contact. Not a problem since I have an LBS nearby, but something to be aware of. I'll update my review after a few rides to go over performance, but initially they feel much more solid than the stock cable mechanical calipers.

I have seen a few other reviews have the same issue I ran into with these brakes. I had to use 180 mm rotors with these. I tried installing initially with the included 160 mm but they didn't have enough rotor between the pads on the caliper. I have a Poseidon x and had to go to a couple different local bike shops to find 180 mm rotors as the first didn't have any. I will say they are much better than standard mechanical calipers though and have had no issues so far being on for a couple weeks. The only other issue I had is the top bolt for the front caliper is difficult to install as part of the caliper is in the way and doesn't allow for a straight hex key to install you will need a ball style end on the hex key to be able to install. If it at least included the correct rotor size I would overlook the slight issue with the bolt and give this product 5 stars. I would still recommend this product but just be aware of the potential of needing bigger rotors.

Most of the negative reviews I see are of folks complaining they the front rotor doesn't fit. I happened to read about this before purchasing for my bike so I was not caught off guard. I paired these with Yokozuna Compressionless brake housing and I can lock my rear tire up and do endos on my Poseidon X now. They are way better than the Tektro brakes that came on the bike. I'm very happy with him.

Nice box160 mm rotors w bolts ...bolted right on my wheels ...no problemsthe brakes look and the piston works great both cylinder work greatStandard is a funny word IS or PMCan not use the fork brake that came in the box because they do not fit of my fork which is 74mm oc!Can not use the rear brake that came in the box because they will not work without an adapter!

Super easy install although on my 2022 top stone 4 I had to use a 180mm caliper in the front because I couldn’t get it to mount with the stock 160 I do believe this is a cannondale issue, not a Juin issue, so I’m not detracting points for this. Braking is umpteen times better than stock single-sided calipers. Adjustment is easy and the build quality is solid!

I've heard a few strong anecdotal reviews and recommendations for these brakes. I bought them and installed them on my bike, and the front brake works great, but the rear brake has always been weaker, and got worse and worse over the past barely 7 months that I've had them, to the point that I have no braking power from it whatsoever. Upon closer inspection, it seems that the rear brake has leaked all of the hydraulic fluid (mineral oil?) that it once had, thus no longer functioning. I had high hopes and expectations for these brakes and don't know what to think now since the front one still works fine, but I'd feel pretty dumb to buy a brand new set for this to happen again. Does anyone know a customer service line for this company? I haven't been able to find one, and obviously I'm past any 30 day return policy. Sorry for the inconclusive review.