K-Tuned 9th Gen 12-15 Civic Si RBC Swap 3" Cold Air Intake - KTD-CA9R-30F 917 Series The internal spring can also

The internal spring can also be swapped our for something stiffer/lighter so you can set the level of resistance you prefer

up to 50% less than stock

50 to -10AN

MB1-SPSS kit features a Sport pressure plate for a nice upgrade

-12AN Male To -6AN Male AN Reducer - Black - 919-12-06-2

K-Tuned 9th Gen 12-15 Civic Si RBC Swap 3" Cold Air Intake - KTD-CA9R-30F 917 Series The internal spring can alsoApplications: 12 15 Civic Si with RBC Intake Manifold Features: * Available in 3. 0" and 3. 5" piping Notes: * Flashpro or KTuner is REQUIRED * Must use after market Clutch Line to avoid contact with battery tray. * Does NOT fit stock intake manifold * OEM ECU (No flashpro) do not connect VC to intake pipe. Small filter provided for valve cover vent. * Flashpro is required and you'll have to switch over to a MAP based tune if your choosing the 3. 5"