Magura Disc Brake Bleed Kit, Premium Quality!, Genuine Royal Blood Fluid

Awesome! I bought this to bleed Magura RT8 TT rim brakes. These aren't the mountain bike brakes, so wasn't sure if it would work. But, it does!Ordered it and it shipped immediately. I had it a couple days later.I have zero experience bleeding caliper brakes from mountain bikes. For bleeding Magura RT6 and RT8 rim brakes, the tools you need are an allen key with the star tip, a syringe with a hose on the end, a properly-sized syringe WITHOUT a hose (the tip needs to be just the right size), and the metal grommet/nipple piece to push the fluid in.This kit includes all of that (and enough Magura fluid for the job) with the exception of the star tip allen key. It has a torx bit, but that must be used for mountain bike rotor brakes. Luckily I had the star tip allen key on several of my bike multitools. It's a very standard piece.In essence, to bleed you need to:1. Remove the allen key bolt (2-3mm?) from the middle of the front of the caliper2. Replace it with the included nipple grommet with hosed-syringe attached (hosed syringe filled with 25ml of the included Magura fluid)3. Remove the star bolt from the top of the brake lever4. Push the non-hosed syringe tip into the hole there so it makes a seal, don't have the stopper in it5. Push the fluid-filled syringe stopper to push fluid through the system6. Air will come out the top, then fluid will come out and the top syringe will fill with fluid7. Tap and shake everything to get all air out of the system8. Replace the star nut, replace the caliper bolt.You're done!This kit is great and priced awesomely. They could make a rim brake specific version if they wanted replacing the torx bit with a a star bit, but the star bit is a really common thing so you probably have one if you have any bike multitools.Every shop I called wanted $30-35 to bleed, PER BRAKE. So a one-time bleed job would have been $60-70. Ridiculous when you can just buy this kit and then purchase more fluid later if you ever need to bleed again. It's such a simple job once you get the hang of it.

If you're working from the Magura factory instructions (and they have a very helpful and clear instructional video on brake bleeding on their website), you'll need to drill a small hole at or around the 30mL marking on the larger syringe. This syringe is inserted in the master cylinder EBT port, and the hole lets air escape while pushing the fluid up from the caliper end. To remove it, cover the hole with a finger to keep fluid from leaving out of the spout, then point the spout up and push the plunger past the hole you drilled, and then you can set it down without spillage.I'm not sure why this doesn't come with that hole already present, as I don’t see how you could use the syringe as a bleeding receptacle without it, but it’s not a hard modification to make. Maybe there is another method I'm not aware of, but the Magura procedure is simple, clean, and effective.I've used this kit twice, and everything in it seems of good quality.

Fast shipping, first-class seller. Bleed kit works great. Didn't come with directions, so I wrote some, since the featured review on this page has directions that skip an essential step.DIRECTIONSRemove the wheel and then remove the brake pads ( This is to protect the pads from fluid spills, which will ruin them.) There is a retaining pin that must be removed before the brake pads can be removed. Put something solid in the caliper (where the pads were) to ensure that the caliper pistons can not extend, make sure this spacer will not fall out.Clean the area of the reservoir on the brake lever and the bleed screw on the caliper, to avoid introducing dirt into the system.During the procedure the brake caliper bleed screw must be the highest point of the caliper, so that no air remains trapped in the caliper during bleeding. One can achieve this but removing one caliper attaching bolt and pivoting the caliper to the appropriate angle, or more easily perhaps, by positioning the entire bicycle so that the caliper is at the correct angle without loosening or removing any caliper bolts.Either way, get the caliper correctly positioned, and the entire bike firmly positioned so it will not move.During the procedure the brake fluid reservoir must be level (i.e. the top surface of the reservoir parallel to the ground surface). This is done by loosening the screw that attaches the brake to the handlebars and pivoting the brake lever/reservoir to the appropriate position.Wrap an absorbent rag around the caliper and another one around the brake reservoir, out of the way, but positioned to catch any spills. Optional.Remove the bleed screw on the caliper and screw in the bleed adapter that is on the end of one of the syringes, the plunger on the syringe should be completely depressed before doing this. The clip on the syringe should be in the open position.Fill the other syringe with fresh brake fluid.Remove the reservoir lid and gasket on the brake lever. Fill the reservoir to the brim or close to it, using the syringe you just filled with fresh fluid.Slowly pull the brake lever all the way down, you will see brake fluid and/or air bubbles entering the syringe attached the the caliper. While holding the brake lever all the way down close the clip on the syringe attached to the caliper. AFTER the clip is closed, slowly release the brake lever.Slow prevents a mess, pulling or releasing the lever quickly may spray fluid all over the place.Refill the reservoir - if it drops too low during this procedure you will add air to the system.Open the clip on the syringe attached to the caliper.Repeat until no air bubbles are seen in the brake fluid draining into the syringe attached to the caliper, or until the old fluid is completely flushed out, whichever is your objective.Remove the adapter from the caliper and replace the bleed screw into the caliper.Refill the reservoir to the absolute brim.Replace the reservoir gasket and then the lid. One wants the reservoir completely full.Wipe clean any spilled fluid on the caliper, brake lever, and surrounding areas. If your system uses DOT brake fluid be aware that it is a corrosive caustic fluid that is dangerous for you and is also a great paint remover.Gently at first, pull the brake lever and check for leaks.If no leaks, remove the spacer in the caliper, and replace the pads and retaining pin. DO NOT pull the brake lever again until the wheel is replaced (Or another spacer is placed between the pads).Do not put oily rags in the trash unless you are comfortable with spontaneous combustion of oily rags burning your house down.

I had already found a Youtube video with instructions on how to do this. Would have been nice if Magura included a link to the How To. If you take your time, it will go well. The instructions spoke of removing the wheel. I did not and it went fine. The syringe screwed on fine but it is small and you need to be a little quick or you get leakage. I still have enough left to repeat the process a second time. I replaced my brake pads at the same time. You have to remove them anyway, so might as well replace them unless you have new ones.