Circuit Performance Black Bolt Valve Review

Feels good, light weight. Looks great, sticking out about an inch, enough room not to scratch the rims. We'd really appreciate installation instructions, but if you don't have experience, call the pros! Installation instructions: Only use the stem with the first rubber grommet. Add another rubber grommet, facing each other. Insert washer. Tighten both nuts. Check out the photos for details.

I would have given more for it but mine arrived on a Sunday - the day before I had scheduled an appointment to have my tires fitted; it was urgent as I had a slow tire leak that was accelerating and only lasting a day or two between inflations; and one of the jam nuts was split in half rendering the whole set unusable. Also, I would have had to wait TWO DAYS for delivery to get a replacement kit as it was the fastest option available.

Basically I wanted to fit 4 new discs to my WRX so I ordered 8 of these (just in case) then installed 2 of them with no problems. The other two threads came off too easily (pictures attached), good thing I bought extra packaging. like a chinese product, but ok for the cheap price, hope they won't let you down on the go.

One broke in half during installation. The other had a slow leak so I had to inflate the tire every 2-3 days before returning to the tire shop. They just replaced it with a cheap rubber and the problem was solved. These things are cheaply made and easily broken. I wouldn't do it again and I don't recommend it. You can lose air and get stuck in an apartment, which can be a major inconvenience. 2 valves are ok. Only use cheap rubber. They might not look that cool, but at least they will work.