Monroe OESpectrum Complete Replacement Rear Shocks for Chevy/GMC Trailblazer/Envoy Includes 2 Rear 37241 Fits: 2003-2006 Chevy SSR; 2002-2009 Chevy Trailblazer; 2002-2006 Chevy Trailblazer EXT; 2002-2009 GMC Envoy; 2002-2006 GMC Envoy XL; 2004-2005 GMC Envoy XUV; 2003-2008 Isuzu Ascender; 2002-2004 Oldmobile Bravada Includes 2 Rear 37241 Compressed Length - 14.5"; Extended Length - 23.07"; Travel Length - 8.51"; Nitrogen gas-charged for improved ride and handling, helps maintain tire-to-road contact by reducing aeration Expanded reserve tube* for greater oil capacity to better dissipate heat compared to OE Self-lubricating fluid seal designed to retain gas without excessive wear or friction.