The BROSE groupset is not compatible with the Specialized Gen 3 Levo. Due to an offset motor design, using the BROSE groupset on a Gen 3 Levo will give you an asymmetric crankarm setup and a chainline that is far too wide for Eagle Transmission. For the Specialized Gen 3 Turbo Levo, the required option is the 104 bcd groupset kit, which provides a suitable mounting solution for the SRAM Eagle Transmission. Our 104 bcd groupsets are available in GX, X0, and XX variants (part numbers below).
GX - 00.7918.282.002
X0 - 00.7918.281.002
XX - 00.7908.280.002