NVX BOOST Kit for 2006-2013 Lexus IS 250/350/F (BE-LEX-IS0613-VCW104) - Walmart.com
DD Audio - Nice and clean install by Drake Custom Audio in a Lexus IS250 using a pair of DD REDLINE 612 Subs on a DM1500 amp! ddaud.io/subwoofers | Facebook
Amazon.com: Custom Sub Enclosure Subwoofer Box for an 08-13 Lexus IS250 / IS350-1 12" Sub : Electronics
SUBWOOFER FOR LEXUS IS250 OR IS350 for Sale in Ontario, CA - OfferUp
How to install a Subwoofer in a lexus IS250/ IS350 - ClubLexus - Lexus Forum Discussion