CushCore44mm Air Valve Set - Premium Set of Alloy Valves, Nitrile Rubber Seal, Valve Core Tool Included, Tubeless Presta Valve, (44mm 2-Pack, Green)

I've been nothing but pleased with these stems over most others. They are Cushcore marked and appear to be original. No issues with leaking and the allow easy injection of sealant. I've been using them for about 6 months now and they havent clogged up with sealant. Over all a great stem, I use them on my carbon 30mm MTB enduro wheels.

Little cheaper than Muc-off valves, but seem to work just as well. I removed one side of the tire from the wheel, removed the tube, put the CrushCore valve in, tightened it up as finger tight as I could, put a couple of ounces of sealant in the tire before putting tire back on wheel, pumped it up with a hand pump, rode around for 5 minutes, done. These are made well and a great alternative to Muc-Off or any other respectable valve currently in the market.

One broke at the rim line after about 5-8 hours of riding. Another began leaking also at the rim line after 15 hours of riding. Cush core is amazing but these valve stems are junk. Won’t buy again.