WTB a releasing a lighter weight version of their Frequency TCS i23 rim called KOM TCS i23. Claimed weight is around 425g in 29in version! Given I'm waiting for the TL28 to be back in stock, I'll see what WTB has to offer before going with Pacenti...
WTB's New Enduro, Tubeless CX, And Pavement Tires - BikeRadar
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Thread: New alternative to TL28