PAX217 was formed in 1994 in Orange County, CA by Dave Tosti, Ethan Luck (who was replaced by Dan Sessum, Thaddeus Williams, and later by Jesse Craig), Josh Auer, and Dave's younger brother Aaron Tosti. They recorded a demo tape and months later signed with Forefront Records. On August 2000, Aaron left the band and was replaced by Joey Marchiano. Brothers Chris and Bobby Duran later joined the band on percussion and turntables, respectively. With Forefront, they released two albums: Twoseventeen on March 2, 2000, which featured "No Place Like Home" and "AM" (which was included on the soundtrack of the film Extreme Days), and "Engage" on May 21, 2002. They released an independent EP titled "Check Your Pulse" in Summer 2004. The same year, Chris and Bobby Duran left the band. PAX217 held their last concert on October 21, 2005 in Chino, CA.