The Boss Astro Full Suspension Mountain Bike is fitted with top of the range Shimano 18 speed gears to take care of the transmission, controlled by Twist grip Microshifters. Wheels now feature stronger double wall alloy rims with machined braking surfaces for increased stopping power, and other well thought out details includes 26 x 1.95″ MTB tyres and a colour coded Boss saddle and gel grips for improved comfort on long rides.