PORTBAGAJ ACID SIC RAIL 29 Negru The ACID Carrier SIC RAIL 29" is our slimline, minimalist take on stylish practicality. It's the easy way to attach panniers for extra load-carrying capacity. And it's retrofit compatible with the ACID Top RAIL RILink to add even more cargo volume plus the RILink interface. This luggage carrier is compatible with CUBE bikes with 29in wheels and the SIC frame interface.compatible with 29in CUBE e-mountain bikes with SIC frame interface suitable for attaching panniers slim and minimalist design