Thruster Bikes 27.5" Retro Grade BMX Bike - Black Retrograde is a bike that is totally unique in our line. It features a strong yet lightweight Aluminum frame, chromoly fork, massive 3.0 Kenda Havok Sport tires and a 9 speed Shimano Altus drivetrain. https://www.goeasyonline.com.au/cycles/thruster-bikes-27-5-retro-grade-bmx-bike-black #goeasyonline #bicyclesonline