Diamondback Atroz 2 Dual Suspension The Atroz 2 ups the ante with Shimano hydraulic disc brakes, Suntour air-sprung rear suspension and an easy-to-operate single-ring drivetrain features you usually find on bikes with a whole lot more dollar signs on their price tags 15" - Small 5'- 4" to 5'- 7" 17" - Medium 5'- 7" to 5'- 10" 19" - Large 5'- 10" to 6'- 1" FRAME Atroz 6061 T-6 Aluminum 27.5 Trail w/ 4" travel, Optimized Single Pivot, Tapered Steerer, Machine Formed Top Tube, Butted / Formed Down Tube, Sealed Cartridge Bearing Pivot, Seat Tube Routed for Internal Dropper Post, Aggressive Geometry, Replaceable Hanger REAR SHOCK SR Suntour Raidon-R, Air Shock w/ Rebound Adjust, 184x44mm FORK SR Suntour XCM 120mm Travel, 30mm Stanchions, w/ Preload Adjust HEADSET FSA NO.57, Sealed Cartridge for Tapered Headtube CRANKS Aluminum Arm w/ 30T Steel "Narrow Wide" Single Ring BOTTOM BRACKET Sealed Cartridge FRONT DERAILLEUR Full ISCG-05 Chain Guide w/ Roller REAR DERAILLEUR Shimano Acera M3000 Shadow, 9 Speed SHIFTER Shimano Acera M3000, 9 Speed COGSET Shimano HG200, 9 Speed, 11-36T CHAIN KMC Z9, 9 Speed FRONT HUB Formula Hubs, 32h Aluminum w/ CNC Disc Mount REAR HUB Formula Hubs, 32h Aluminum Cassette w/ CNC Disc mount SPOKES 14g Stainless Steel RIMS 32H, DDM-5, 27.5 Double Wall TIRES VEE Rubber, Flow Snap, 27.5x2.35 BRAKE LEVERS Shimano MT200 Hydraulic PEDALS DB4L Aluminum Platform HANDLEBAR Diamondback, 750mm Wide, 15mm Rise, 31.8 Bar Bore GRIPS New DB "Flanged" 135mm Silcone STEM Diamondback "Shortie", 45mm Reach, 31.8 Bar Bore SEAT DB Sync'r Saddle SEATPOST Aluminum Micro Adjust, 30.9mm EXTRAS Tool Kit BRAKES Shimano MT200 Hydraulic Disc, w/ 180mm Front and Rear Rotors