Perfect for the boys and girls who know how to go fast! Throttle Down Speed Co. finally brings the Flying Piston design to a kids design in this unisex shirt. This design was hand drawn one summer night and picked out of our sketchbook to become a part of the TDSC lineup. The Throttle Down Speed Co. Flying Piston T-shirt is all about speed and style. This shirt is perfect for summer nights in the garage or at the track. The 100% cotton black shirt features a grey design with yellow accents.