Forged 6061 aluminum mini V-brakes allow for good mud clearance and wheels are made with Alex S500 aluminum rims that have CNC machined sidewalls for consistent braking. A Shimano Deore rear derailleur and a 9 speed cassette (12-25t) provide good performance at a reasonable cost and Body Geometry Comfort Grips on the handlebar provide a comfortable grip for long rides. The front triple chainring is a 48x38x28t with Chainguard, which means the bike has 27 gears and will be able to handle steep hills and fast descents. Tires are Specialized All Condition Sport 700 x32c, with a wire bead and 60 TPI (threads per inch) with Flak Jacket Protection for good resistance to puncture. This bike differentiates itself from lower models in the Sirrus line with better shifters and derailleurs.