Rex Wax Black Diamond Hot Wax - Additive Block

Black Diamond Additive’s Rex is a solid block of friction modifiers used in a hot-wax setup, providing quieter and longer-lasting performance compared to standard blends.

• The description claims that pairing one black block with four white blocks creates a mix that runs quietly and holds speed in bad conditions.
• The description claims that the treatment lasts longer than standard blends and keeps the chain cleaner.