The Yakima Chrysler Town and Country Single sliding dr 1990-1991 TimberLine Complete Car Roof Rack with Steel CoreBars is designed to firmly attach to your vehicle's factory installed raised railings. TimberLine Towers are part of Yakima's StreamLine Series product line. TimberLine Towers utilize Yakima's over-molded, wrap around, stainless steel straps to fit virtually every factory raised railing profile. With BarBed Pitch Adjustment, crossbar pitch can easily adjust to keep crossbars level on vehicles with curved roof-lines. A pre-calibrated torque driver is included with TimberLine Towers to assure the exact tightness level during installation. The Yakima TimberLine Complete Car Roof Rack with CoreBars includes 4 TimberLine Towers, 2 Yakima Small 50" Steel CoreBars and all attachment hardware. With the addition of 4 Yakima SKS Lock Cores, TimberLine Towers can be locked to your vehicle's raised railings (sold separately - see below).