Six Flags Magic Mountain revealed West Coast Racers during a media event held at the park on August 29, 2018, along with a press release the following day. Park president Neal Thurman and West Coast Customs Founder and CEO Ryan Friedlinghaus announced their partnership in the design of the roller coaster, which was touted as having a record-breaking four magnetic launches. It would also feature four inversions – three zero-g rolls and one zero-g stall – along with 30 train interactions, which includes 14 track crossings and one "high-five" element across two laps around the course. The coaster would reach a maximum speed of and feature a number of airtime hills and overbanked turns that will occur side-by-side. West Coast Racers was originally marketed as the park's 20th coaster, but with the planned removal of Green Lantern: First Flight after the 2019 season, the park's total number of coasters remained at 19. Construction began months behind schedule in May 2019 following a delayed delivery of finished track. The first pieces arrived reportedly later than expected in February 2019. Six Flags did not release an expected opening date, but Theme Park Insider estimated fall 2019 based on the delayed start. A construction update in July 2019 showed a significant amount of work left to complete. In October 2019, a writer for USA Today said, "Speaking of Magic Mountain, the Los Angeles-area park has not revealed anything new for 2020. It still has yet to debut West Coast Racers..." On December 12, 2019, it was announced West Coast Racers would operate during a series of preview events beginning on December 21, 2019. Access was given first to guests with select membership status, and on December 23, 2019, access was given to season pass holders, along with guests who purchased either a West Coast Racers t-shirt or the park's flash pass. The ride officially opened to the general public on January 9, 2020.
Ride experience
A pair of two-car trains, each holding a total of 12 riders, launch simultaneously from the station. They interact over thirty times throughout the course of the track, reaching a maximum speed of as the two trains cross the finish line. One pulls back into the station, while the other pulls into a replica of the West Coast Customs shop to listen to a narration given by Ryan Friedlinghaus. Both cars launch again and repeat the course a second time, producing a ride duration of approximately three minutes.