Diamondback Atroz 1 - 27.5" Mountain Bike (2021)
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Diamondback Atroz 1 - 27.5" Mountain Bike 2021 (Earn $50 of Free Gear)

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SKU: 1-DB020310184

Regular price $1,075.00

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As a mountain biker, you actively seek out challenges and obstacles. The Diamondback Atroz 1 - 27.5" Mountain Bike is the perfect tool for the job—whether you’re a trail-seasoned vet or are heading into the woods for the first time.

People say you have to spend a hell of a lot of cash to buy a full-suspension bike. Or at least a full-suspension bike that truly performs. They’re usually right. Usually. But not this time around. The Atroz proves them wrong with four inches of a reliable coil-sprung rear suspension that nicely smooths out the trail. Since you’ll need to climb to the top of the mountain, we’ve also given the Atroz an 18-speed Shimano drivetrain, and when it’s time to head back down, you’ll find the Suntour XCM suspension fork and Tektro Aries mechanical disc brakes keep you firmly in control of the descents.


  • Hand-built 4-inch travel aluminum alloy full-suspension frame is super strong
  • Optimized single pivot with sealed cartridge bearings for smooth, durable performance
  • 18 gears courtesy of Shimano 2x9 drivetrain
  • SR Suntour XCM fork with 120mm of suspension travel
  • Tektro Aries mechanical disc brakes w/ 180/160mm rotors
  • 27.5” wheels offer quick handling
  • BIKE FRAME: Atroz 6061 T-6 Aluminum 27.5 Trail w/ 4" travel, Optimized Single Pivot, Machine Formed Top Tube, Butted / Formed Down Tube, Sealed Cartridge Bearing Pivot, Seat Tube Routed for Internal Dropper Post, Aggressive Geometry, Replaceable Hanger
  • BIKE REAR SHOCK: Kindshock, Coil Shock, 184x44mm
  • BIKE FORK: SR Suntour XCM 120mm Travel, 30mm Stanchions, w/ Preload Adjust
  • BIKE HEADSET: Ahead 1 1/8" Zero Stack
  • BIKE CRANKS: Shimano Alloy, 36/22T
  • BIKE BOTTOM BRACKET: Sealed Cartridge
  • BIKE FRONT DERAILLEUR: Shimano Alivio M4020 Side Swing,
  • BIKE REAR DERAILLEUR: Shimano Altus M370, 9 Speed
  • BIKE SHIFTER: Shimano Altus SL-M2010, 2x9 Speed
  • BIKE COGSET: Shimano HG-31, 9 Speed, 11-32T
  • BIKE CHAIN: KMC Z99, 9 Speed
  • BIKE FRONT HUB: Formula Hubs, 32h Alloy w/ CNC Disc Mount
  • BIKE REAR HUB: Formula Hubs, 32h Alloy Cassette w/ CNC Disc mount
  • BIKE SPOKES: 14g Stainless Steel
  • BIKE RIMS: DDM-2, 32h, 27.5 Doublewall
  • BIKE TIRES: VEE Rubber - Trax 27.5x2.35
  • BIKE BRAKES: Tektro Aries Mechanical Disc, w/ 180mm Front and 160mm Rear Rotors
  • BIKE BRAKE LEVERS: Tektro 2 Finger Alloy Linear w/ Reach Adjust
  • BIKE PEDALS: DB4L Alloy Platform
  • BIKE HANDLEBAR: Diamondback, 750mm Wide, 15mm Rise, 31.8 Bar Bore
  • BIKE GRIPS: New DB "Flanged" 135mm Silcone
  • BIKE STEM: Diamondback "Shortie", 45mm Reach, 31.8 Bar Bore
  • BIKE SEAT: DB Sync'r Saddle
  • BIKE SEATPOST: Alloy Micro Adjust, 30.9mm
Frame Size SM/16  MD/18  LG/20 
Rider Height 5'4"-5'7" 5'7"-5'10" 5'10"-6'1"
Bike Stand Over Height 755 mm 771 mm 775 mm
Bike Seat Tube Length 380 mm 430 mm 480 mm
Bike Top Tube Length 550 mm 585 mm 615 mm
Bike Head Tube Length 110 mm 110 mm 120 mm
Bike Head Angle 66.5 mm 66.5 mm 66.5 mm
Bike Seat Angle 72.5 mm 72.5 mm 72.5 mm
Bike Wheel Base 1095 mm 1130 mm 1161 mm
Bike Chain Stay Length 435 mm 435 mm 435 mm
Bike Fork Offset 44 mm 44 mm 44 mm
Bike Bb Height 330 mm 330 mm 330 mm
Bike Bb Drop 10 mm 10 mm 10 mm
Bike Stem Length 50 mm 50 mm 50 mm
Bike Handlebar Width 750 mm 750 mm 750 mm
Bike Crank Length 170 mm 175 mm 175 mm
Bike Seat Post Length 300 mm 300 mm 300 mm
Bike Stack 559 mm 559 mm 568 mm
Bike Reach 373 mm 408 mm 435 mm


When Will My Order Ship? Due to COVID-19 and continued supply chain disruptions it may take 3-7 business days before your order ships and you receive a shipment confirmation. Most shipments leave our warehouse within 48 hours of placing an order. Some take longer if shipping from a vendors warehouse. Once your order has shipped a tracking number will be e-mailed to you with a delivery estimate. This info can also be accessed from your Account Page. Free Shipping Promotion We're happy to offer FREE shipping on orders over $75 within the continental United States. This excludes some oversized items. For example bikes, wheels, trainers, indoor bikes, car racks, etc. see your shopping cart for more details. In Store Pick Up If you would like to pick up your order at one of our stores just select the "Free Store Pickup" shipping option when ordering. Please note that our online store and our retail stores maintain separate inventories. Purchases made online with an in-store pickup option will be shipped to the store from our online warehouse. One of our team members will contact you when your order is ready for pick up. This process usually takes 1-4 days.

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