2011 4 Runner Stereo Upgrade . Now you can upgrade your factory stereo without losing those ever-so convenient steering wheel controls. The base system has six regular-issue speakers, while the JBL systems feature (what else) JBL speakers and lots of 'em. Radio Upgrades... Let see them. - Page 18 - Toyota 4Runner ... (Amanda Webb) Swapping out the OEM dash speakers with a coaxial speaker, that has a woofer cone, and integrated tweeter. Enjoy deep, non-localized low frequency reproduction. We are always updating our instructions to ensure a seaml. The base system has six regular-issue speakers, while the JBL systems feature (what else) JBL speakers and lots of 'em. We are always updating our instructions to ensure a seaml. Used 2010 2011 2012 2013 Toyota 4runner Hd Radio Cd P10121 ... Radio Upgrades... Let see them. - Page 18 - Toyota 4Runner ... ...