CYCOBYCO Bicycle Brake DOT Oil Bleed Kit for AVID Sram Formula Hayes Bngal Hope Quad Kingdom Promax Hydraulic Disc Tools

Better value than the more expensive options from big name bike tool companies. Everything was sized correctly and worked good. Bled Hayes dominion system easy peasy

Everything worked well my only complaint is that the kit did not have the bleeder adapter for SRAM brakes.

This is the best kit (of two) that i’ve bought so far. I’m 8 for 8 on successful caliper and master cylinder / brake lever bleeds. this could have cost me over $13,000 (est) to get the LBS to do it, and with a 9 month backlog, i decided to have at it.It’s well made (believe it or not) and the instructions are easy to read and follow. Unless you’re primarily English speaking and giving your best to read the Chinese side. Then you might have difficulty.Otherwise this is a simple flimple.*note: follow the instructions. don’t go off script. Make sure your calipers (visible sides, interior piston area, and nipple or torx screw) are clean before started. yah isopropyl alcohol is fabulous ... in a spray bottle. Otherwise use some non-chlor brake cleaner (sparingly and with adequate ventilation and HAZMAT suit and 3x N95 COVID masks and 2x safety glasses and you should be good). Also once you get the pads back in there give the assembly and rotor another squidge or three of brake cleaner. Use a cloth to prevent over spray. Wipe off any excess from the caliper and wheel and tyre and your cat and any innocent bistandars. Re-center the caliper if-needed (search the www). Follow recommended brake pad bedding techniques and you’ll be stopping on a quarter every time.

The problem with many bleed kits is that the syringes are cheap and not durable. The syringes in this kit are the type you get in the higher end kits at a bicycle shop. I work at a shop and these are clearly the same, identical syringes that are in our $80 bleed kit. The extra fittings for different brakes are just a bonus. The syringes are the real value in this kit.

Low quality and allows air to blead around piston. Sent it back and purchased Parktool and bleeding the brakes was so much easier. You get what you pay for...

If you’re on a budget like me, these work fine for Hayes Dominion A4. You can get a good bleed from them without any leaks.If you can spend the extra, go for the Hayes Pro bleed kit from Hayes though. The syringe on these are kind of cheap and I imagine the kit from Hayes would last much longer.

The kit is a great deal cheaper than the actual SRAM kit itself. That said the pieces are well made and seem to be durable. Since they are made to handle multiple brake sets, I found some of the fittings and tubing not quite the right size, but it did the job. The brake blocks were a little narrow for my SRAM Level brakes but I didn't have any issues.

For the price, I feel like the parts are a bit cheap. They are also making a lot of money grouping a lot of stuff together you don't really need, and there were a couple things I would have liked to have. For instance, a piece of tubing longer than 2 inches so you could run break fluid to the ground. My breaks also didn't really need the metal adapters, but I did need a piece of wider plastic tubing to drain fluid. So as a kit, the syringe and little wrench were all that were really useful to me.Can't speak for every break system, but for me this wasn't a wise investment