Between the Montclair TransCenter and the El Monte Bus Station, buses travel on the San Bernardino Freeway.

Passengers were then asked to transfer to either Silver Streak, 481 (later discontinued in Late 2017) or Metro service to Downtown Los Angeles.

In October 2012 the rebuilt and expanded El Monte Bus Station opened, and a joint fare program was introduced on the Silver Streak/Metro J Line.

On January 23, 2023, a weekday-only stop at Cal Poly Pomona was added and hours were later extended to 9 p.m. in October 2023.

Effective July 2022, one-way fare is $1.75 for trips of any length, including transfers to Foothill Transit local lines.