New type: SN108170BL2-H/H   (with air port 1/8NPT)

--Hollow flange cap that can be assemblied with any customized brackets for different car type.

--Inner Diameter of open cap: 55mm

--It is new design type that is smaller than SN120180BL2 and can instead of Sleeve air spring, but with larger load capacity than Sleeve ones.That is better choice. 

--Air inlet located side of endplate to avoid blocking when you screw coilover lock rings to the bottom, this is adaptable for the coilover with larger lock rings/Spanner ring.