Bilstein B14 2004 Chrysler Crossfire Base Front and Rear Suspension Kit 2015-bmw-x1-sdrive28i-esi2304473 They feature single 4" round

They feature single 4" round polished T-304 stainless steel tips on each tail pipe (2 tail pipes included in this kit)

The extension pipe dimensions are 3

Bilstein B8 8112 (ZoneControl CR DSA+) is a direct fit

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Bilstein B14 2004 Chrysler Crossfire Base Front and Rear Suspension Kit 2015-bmw-x1-sdrive28i-esi2304473 They feature single 4" roundBilstein B14 (PSS) suspension kits feature ride height adjustability in an OE quality, direct fit package. These kits offer monotube performance dampers with matched springs that are tuned for each specific application. The zinc coated and threaded body design will give you the flexibility to find the perfect ride height setting for your intended use while providing unsurpassed protection against the harshest road elements. B14 (PSS) suspension kits