hi there. that is just an upgrade kit (from older solo air model), not a full solo air assembly.
For the full solo air assembly, you'll need; 11.4018.012.004 Air Top Cap, Solo Air 35mm PIKE/BOXXER 11.4018.032.000 Bottomless Tokens Qty 3 PIKE/BoXXer B1/Lyrik B1/Yari OR 11.4018.032.001 Bottomless Tokens Qty 10 PIKE/BoXXer B1/Lyrik B1/Yari 11.4015.475.030 Solo Air Spring Assembly - BoXXer Solo Air Refined (2011-2016, serial number later than 16T11XXXXXXX)