This $4 one-person boost kit is not only cheap, it does what it's supposed to. I don't know about other bikes but I have an 04 Ex 500 that has the caliper and master cylinder on the same side (right side) which makes the job even easier. The plastic tip fits the outlet valve very snugly, although you will see some leakage when screwing the screw in and out, it is minimal. For those with the master cylinder and caliper on the same side, I highly recommend purchasing this item and saving $30 instead of a powerful vacuum unless your bike is designed differently and/or you have multiple bikes year-round, with which you can work.
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