It is often referred to as the original BMX bicycle manufacturer having innovated many revolutionary components for the sport such as tubular chromoly forks and cranks.

The bike was noticed by a company called Pedalers West and they challenged Kastan to come up with a stronger and lighter fork specifically for 20 inch BMX racing.

By this time Kastan had designed and was releasing the Proline, their first official Team Model frame and fork.

In 1988 Kastan sold Redline to Seattle Bike Supply (SBS) and they relocated the company to Kent, Washington.

The company produced its first mountain bike in 1989 and changed its colors to pink, white, and black.

They went on to manufacture road bicycles in the early 1990s and would eventually change the colors back to the original red, black, and white in 1993.