In a recent Meca order, ex-of-NASA here, wrote in the wrong number and, instead of a standard 215 clutch kit, ordered a ceramic clutch disc. My Europa is strictly for the street so I don’t need it and returning it is too much work. So, if you’re racing and looking for a ceramic clutch, you are welcome to mine for 1/2 of the Meca price. It’s part number 1545.