Dan Hurda posted this to Facebook this morning:
EBR Motorcycles is pleased to announce 1190 RX & SX Chain Slider Blocks are back in stock and updated for increased durability and ease of assembly. The updated chain slider block is made out of a stiffer, more durable material and features a slot in the side so it can be installed and removed without breaking the chain. The new version is part number G0012.1B7A and is available from your EBR Dealer or you can order direct from parts@ebr.com